Arduino projects

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Arduino projects Anonymous Fri Oct 19 17:14:43 2018 No.1483190 [Reply] [Original]

So I recently bought an Arduino Uno and I blinked a led to test it.
What other cool projects are there? Which ones have you do yourself?

>>	Anonymous Fri Oct 19 17:42:46 2018 No.1483196 Shove it up your rectum

Anonymous Fri Oct 19 17:50:42 2018 No.1483200
File: 1.38 MB, 2048x1536, 20150918_154129.jpg [View same] [iqdb] [saucenao] [google]

>>1483190
Not to shit on your thread but I really hate when people do this.

>I have X, what can I do with it?
You don't get a tool without having a use already in mind. I wouldn't go out and buy a power hammer and then ponder about what I can make with it. I would already have an idea of a few projects that would require such a tool, then purchase the tool.

You have put the cart before the horse. If you have bought it without a specific purpose in mind then you might as well stick it up your ass as >>1483196 suggested because otherwise it's just going to collect dust.

However, you could always make a sentient AI that turns into a fascist.

>>	Anonymous Fri Oct 19 19:11:59 2018 No.1483229 >>1483196 >>1483200 jaded cunts. both of you. Arduino is a perfectly legit topic to discuss. Nothing wrong with a noob making a thread to starting learning what other people like to do with it

Anonymous Fri Oct 19 19:24:02 2018 No.1483232
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>>1483229
There's nothing wrong with asking for help on a project or tinkering with an Arduino. The problem lies in the "I have X, what do." It seems most Arduinos and RPis gather dust because people just buy one without rhyme or reason and then can't find something to do with them or have no motivation.

OP: find something you're interested in and see how you can automate/control/manipulate/whatever with an Arduino. I got into uCs because I like lighting.

>>	Anonymous Fri Oct 19 19:34:51 2018 No.1483233 I made soap with mine

Anonymous Fri Oct 19 21:01:32 2018 No.1483273

>>1483190
Shove it up your ass, but since that's been suggested already you could attach a microphone with an FFT library and make an audio spectrum visualizer.

>inb4 how do you make an addressable LED matrix that's multiplexed using only the 13 digital I/O pins available

https://www.youtube.com/watch?v=2u_L4t-Y1eg

>>	Anonymous Fri Oct 19 21:18:53 2018 No.1483277 attach a wifi shield and a bluetooth shield onto it and then slide them inside your rectum

>>	Anonymous Fri Oct 19 22:44:02 2018 No.1483296 If you get a relay shield you could attach motors and different appliances to it before inserting it into your rectum

>>	Anonymous Fri Oct 19 22:45:04 2018 No.1483297 >>1483229 >jaded cunts

>>	Anonymous Fri Oct 19 22:51:33 2018 No.1483299 I installed an RF shield on my Uno3 now I can open the garage door by tightening my sphincter muscle since its inside my rectum

>>	Anonymous Sat Oct 20 00:19:14 2018 No.1483323 >>1483190 Attach a flex sensor to your penis, hook it up to an Arduino with a GSM shield and have it text your mom every time you get hard.

>>	Anonymous Sat Oct 20 00:43:31 2018 No.1483331 >>1483229 >Nothing wrong with a noob making a thread to starting learning what other people like to do with it Yes there is if you have this thread every fucking day. Google it!

>>	Anonymous Sat Oct 20 01:46:12 2018 No.1483348 Hey guys I bought an in implanter, not sure what it is but, what do you think I could do with it. It won't fit in my rectum

>>	Anonymous Sat Oct 20 05:20:05 2018 No.1483401 >>1483348 Start stretching.

>>	Anonymous Sat Oct 20 05:32:22 2018 No.1483403 >>1483190 You could get a network shield and use it as a rectal firewall.

>>	Anonymous Sat Oct 20 05:53:26 2018 No.1483406 >>1483190 remote switch https://hackaday.com/2018/07/21/old-phone-new-remote-switch/

>>	Anonymous Sat Oct 20 07:59:14 2018 No.1483435 YOU GUYS SUCK BALLS

>>	Anonymous Sat Oct 20 08:36:43 2018 No.1483438 >>1483401 goatse is your goal, not what you should be hoping for initially

>>	Anonymous Sat Oct 20 10:03:15 2018 No.1483465 I used my arduino to make a motion sensor alarm thus everytime a turd passed by my butt crack lit up since it was in my rectum

>>	Anonymous Sat Oct 20 10:32:19 2018 No.1483475 >>1483190 You could the use a DAC to generate a frequency that passes out into two probes, allowing you to utilise the dielectric constant to measure the relative moisture of your rectum.

>>	Anonymous Sat Oct 20 10:42:31 2018 No.1483481 >>1483196 fpbp

>>	Anonymous Sat Oct 20 16:59:05 2018 No.1483627 >>1483196 >>1483481 samefag

>>	Anonymous Sat Oct 20 17:14:28 2018 No.1483635 File: 438 KB, 2048x1536, IMG_20130724_030414.jpg [View same] [iqdb] [saucenao] [google] >>1483273 Not OP, but that was my first project w the arduino. Shift register led levels for input intensity, be it temp, light, or sound.

>>	Anonymous Sat Oct 20 17:20:20 2018 No.1483640 >>1483196 Someday microchips will get so small we willl be able to shove them up our P-hole instead

Anonymous Sat Oct 20 18:12:10 2018 No.1483668
File: 20 KB, 477x268, MV5BNjIzMjhlYWMtMWZkNC00NDkwLTk5YTUtMzQ4OTVkYTc2ODViXkEyXkFqcGdeQXVyNzU1NzE3NTg@._V1_CR0,45,480,270_AL_UX477_CR0,0,477,268_AL_.jpg [View same] [iqdb] [saucenao] [google]

>>1483229
That's not what this is. Or even what this board is for. This thread is specifically "spoon feed me creative inspiration". Come on anon this aint pintress, make, hackaday, a search engine or even a topic specific subreddit. These are all tools with the purposes OP is looking for. You are confused with where you are...

THIS IS 4CHAN! *spartan kicks you into a half buried collapsing shipping container filled with immitation crab meat and bad dragon products.

>>	Anonymous Sat Oct 20 18:17:44 2018 No.1483671 >>1483190 I need a good source or some ideas what to make some small enclosures for small hobby projects what you guys do for enclosures?

>>	Anonymous Sat Oct 20 18:27:36 2018 No.1483679 >>1483190 that thread again, well at least it is not a rpi one

>>	Anonymous Sat Oct 20 18:35:02 2018 No.1483683 >>1483671 I like to use my rectum personally

Anonymous Sat Oct 20 18:35:44 2018 No.1483684

>>1483671
Hoarding. Yeah, mostly hoarding containers and things made from materials I like. Plastic, metal, wood, leather, cloth and rubber. Anything I can cut, bend, melt, glue, braise/solder, rivet or stitch.
Drill, nibblers, reamer and files are your friends along with blades, saw and razor.

Rubbermaid tubs from the snack and sandwich section are easy mode along with painting over gutted thrift shop items the size you need.

>>	Anonymous Sat Oct 20 18:59:55 2018 No.1483706 >>1483684 okay i get the idea. this sounds good. i just need to go into scavenger mode and keep my eyes out for anything that can become an enclosure thanks

>>	Anonymous Sat Oct 20 20:25:55 2018 No.1483759 >>1483706 one other idea is your rectum

Anonymous Sat Oct 20 20:39:21 2018 No.1483767

Could I use one of these to measure temperature and when it gets above a certain point, supply power to a peltier device to cool it and when it gets below a certain point, reverse polarity to heat it? Also could I add a bluetooth transmitter that would send sensor information to my phone with one of these?

>>	Anonymous Sat Oct 20 20:45:37 2018 No.1483772 >>1483767 I rectum you could

>>	Anonymous Sat Oct 20 20:47:10 2018 No.1483774 >>1483767 I.. I guess. I mean you could probably fit all that inside your rectum.

>>	Anonymous Sat Oct 20 20:52:59 2018 No.1483778 >>1483767 Trying to regulate the temperature of your rectum?

>>	Anonymous Sat Oct 20 21:24:05 2018 No.1483798 >>1483767 Does reverse polarity heat them up?

>>	Anonymous Sat Oct 20 21:28:16 2018 No.1483801 >>1483798 one side heats the other cools reversing the polarity makes it swap sides

>>	Anonymous Sat Oct 20 21:29:56 2018 No.1483804 >>1483801 But thermocouples work by having two different metals, so just flipping the polarity doesn't flip the internal structure of the thing.

>>	Anonymous Sat Oct 20 21:32:12 2018 No.1483806 >>1483804 two different beasts

>>	Anonymous Sat Oct 20 21:34:25 2018 No.1483808 >>1483806 What are? Peltier coolers and thermoelectric generators are all just arrays of thermocouples.

>>	Anonymous Sat Oct 20 21:57:23 2018 No.1483819 >>1483804 flipping around a thermocouple (or moving the heat source from one side to the other) will cause the polarity of the voltage generated to reverse. It works the same way when a voltage is being applied to create a temperature gradient.

Anonymous Sat Oct 20 22:25:15 2018 No.1483832

>>1483819
To heat something up with a thermocouple you put current through it in the same way as if you wanted to cool something down, because the thing acts as a heat pump that decreases temperature on one end and increases it on the other. AFAIK flipping the heat source will cause it to act as a generator or heat engine, not as a heat pump. Forcing current though in such a mode is not something I'm sure of, but likely it would produce heat wastefully on both ends.

Anonymous Sat Oct 20 22:27:41 2018 No.1483833

>>1483819
>>1483832
Oh and rereading this it seems you're referring to a heat engine/thermoelectric generator, while the original post was about using it as a heat pump/thermoelectric cooler, and reversing the current being forced through it as a means of heating things up with it and/or causing it to still act as a heat pump but opposite directions.

Anonymous Mon Oct 22 07:38:42 2018 No.1484604

I do a lot of work with outdoor electronics and they need to be calibrated for temperature and humidity, so I’m slowly working on a rugged, handheld, battery powered unit that measures and displays ambient temp, humidity, barometric pressure, and contact or IR temperature readings and displays all the data to an LCD. Pretty excited about it. I’ve toyed with Arduinos in the past but when I discovered a need for something like it, I really started learning more about the functions and peripheral boards for it.

>>	Anonymous Mon Oct 22 07:47:33 2018 No.1484610 >>1484604 Sounds like a fun project. I love any sort of ruggedized electronics.

>>	Anonymous Mon Oct 22 08:02:51 2018 No.1484615 >>1483200 This.

>>	Anonymous Mon Oct 22 09:12:12 2018 No.1484630 >>1483635 I don’t understand why people get their dicks hard over shift registers when you get a shit ton more functionality out of an EEPROM.

Anonymous Mon Oct 22 12:15:30 2018 No.1484695

>>1483671
i started to 3d print mine
Its cheap as shit and i can do them how i want with slots for pcbs and backside mounting plates
it also looks more professional than ABS with bad aligned drill holes and curved edges from a saw
contrary to popular belief, PLA hold up even in vehicles during summer

>>	Anonymous Mon Oct 22 17:21:53 2018 No.1484812 Could attach a GPS and servo motor, a few wheels and you can have that bitch find and insert itself into your ass

>>	Anonymous Mon Oct 22 22:06:12 2018 No.1484954 >>1484630 No one wants to set 5k arrays with dip switches and/or are too dumb and/or lazy to program one with an arduino. But yeah they make multiplexing a dream.

>>	Anonymous Mon Oct 22 22:07:00 2018 No.1484957 >>1484954 >they make multiplexing a dream this

>>	Anonymous Tue Oct 23 06:03:58 2018 No.1485088 File: 1.55 MB, 3264x1840, IMAG0384.jpg [View same] [iqdb] [saucenao] [google] Lole this is a project im working on right now.

>>	Anonymous Tue Oct 23 06:07:26 2018 No.1485090 >>1485088 The hell is that?

>>	Anonymous Tue Oct 23 07:25:56 2018 No.1485104 >>1485090 whatever it is it's ON

Anonymous Tue Oct 23 07:43:24 2018 No.1485112

>>1485088
I can read "CO2 Pump" and 2 "H2O Pump"s, along with "Product Pump" and possibly "Water Pump II", and those motors look a bit like peristaltic pump armatures. The thermometer would also suggest some sort of chemical mixer, but I don't think CO2 would work well with peristaltic pumps due to the pressure.

>>	Anonymous Tue Oct 23 07:47:47 2018 No.1485118 >>1485112 anon built a breast pump that can simultaneously pump her feminine benis at the same time

>>	Anonymous Tue Oct 23 14:31:54 2018 No.1485256 >>1485112 Exactly anon. Im using one pump to extract the CO2 out of the reactor. (Its a really small desktop sized one). >>1485118 Nice try, fagger

>>	Anonymous Tue Oct 23 16:19:32 2018 No.1485318 >>1485256 >reactor What are you reacting?

Anonymous Wed Oct 24 08:42:49 2018 No.1485640

>>1484957
I didn’t know shit about ICs so I started with the shift register because I saw people driving long ass segment displays with them. For the same amount of wiring and setup of a 4x7 segment display with SRs I was able to drive an 8x16 segment display with 4 EEPROMs. Fucking magic.

>>	Anonymous Wed Oct 24 08:52:26 2018 No.1485645 Get a few cheap servos and do this for Halloween https://m.youtube.com/watch?v=ryUNHPJ3leY

>>	Anonymous Wed Oct 24 09:28:56 2018 No.1485657 >>1485318 >What are you reacting? science fair volcanoes

Anonymous Wed Oct 24 16:40:34 2018 No.1485832

>>1483190

I bought weather station meters from Sparkfun and wrote a Ruby script for my Beaglebone to read raindrops and wind gauges values. Worked like a charm... until I accidentally fried the Beaglebone just before installing it on the roof. My other spare boards either hadn't decent ADCs or weren't easily pluggable to the ethernet.
So I had to resort to an Arduino I bought around 13 years ago, to read weather data and send it over a serial port for an old Beagleboard I had sticking around. Talk about killing an ant using a shotgun.

WebHitler Thu Oct 25 17:44:27 2018 No.1486259

>>1483190
I am on a couple of different projects right now.

>Usb keylogger with wifi
This was one I sidelined for the longest time. But got it working, its 99% complete, just need to tweak the code, debating whether to implement alt + numpad combos for those special characters..

Another one is a 125khz reader/ duplicator I already have the reader working just waiting on the rest of the hardware to come in.

>>	Anonymous Thu Oct 25 18:08:38 2018 No.1486272 >>1486259 What's on 125kHz that you'd be reading or duplicating? RFID?

>>	WebHitler Thu Oct 25 18:11:06 2018 No.1486275 >>1486272 yes, sorry i forgot to include that. I bought a old HID reader, and attached arduino, and came across a library on github for it.

>>	Anonymous Thu Oct 25 19:16:01 2018 No.1486300 File: 3.81 MB, 4032x3024, 20181024_121441.jpg [View same] [iqdb] [saucenao] [google] >>1483190 Christmas came early this year. I just got this pile of stuff. what should I do with it?

>>	WebHitler Thu Oct 25 19:18:19 2018 No.1486302 >>1486300 >>1486300 Oh nice haul, simiar to what I bought a while ago. Curious, what is everything you bought?

>>	Anonymous Thu Oct 25 19:24:10 2018 No.1486304 File: 103 KB, 1088x728, zap.jpg [View same] [iqdb] [saucenao] [google] stuff I acquired

>>	Anonymous Thu Oct 25 19:44:15 2018 No.1486315 >>1486304 that thing would explode a cow

Anonymous Thu Oct 25 19:51:38 2018 No.1486318

>>1486302
i went a little crazy.

2 Barometric Pressure, Temperature and Altitude Sensors for arduino
MPU6050 Accelerometer Gyroscope Sensor Module for arduino
NEO-6M GPS Module with EEPROM for arduino
2 Channel Logic Level Converter 3.3V to 5V TTL Module for Arduino (Pack of 10)
Relay Module for Arduino and Raspberry Pi 5V DC Trigger
2 Channel DC 5V Relay Module w/ Optocoupler Low Level Trigger Expansion Board for Arduino
LCD2004 Module with 3.3V Backlight for ArduinoDisplay of 20x4 White Characters on Blue Background
AT24C32 IIC Module Precision Real Time Clock Memory Module Arduino
NE555P IC Single Precision Timer (Pack of 12)

Digital Multimeter TRMS/Low Impedance, Auto-Ranging 1000V Klein Tools MM700
Eclipse Tools Tri-Wing Precision Screwdriver Set (for security screws)
bunch of 9V Battery Holder Cases W/ ON/OFF Switch, hook up leads
5 9v Battery Clips with bare leads
Ajax Scientific Battery Holder with Lead Wire, 1x AA Cell (Pack of 10)
Ajax Scientific Type Bulb Holder (Pack of 12)
Ajax Scientific Miniature Light Bulb, 1.5V, 0.30 Amp (Pack of 10)

1040Pcs Transistors kit 26 Values 2N2222-S9018/BC327-BC558 NPN PNP
17 Values 1% Resistor Kit Assortment, 0 Ohm-1M Ohm (Pack of 525)
450 5mm LED- Kit White Red Green Blue Yellow
Another Resistor Assortment Kit 22 Values 1/4W 1% Resistor Assortment,10 Ohm - 1M Ohm (Pack of 650)

24Value 500pcs Electrolytic Capacitor Assortment Kit Range 0.1uF-1000uF
Ceramic Capacitor Assortment - Set of 600 Small disc Caps 100 nF to 10 uF

big pack of alligator clip Test Leads, 20.5 inche length

Plus a couple of Arduinos, some more sensors, relays, etc., a pile of misc size bread boards, thru-hole circuit boards, an absolute shitload of test leads, hook up

leads with misc type connector ends, bunch of hook up wires and half a dozen spools of 22 gauge wire.

i have a few different project ideas. so at least now i have some basic components to start with

>>	Anonymous Thu Oct 25 20:26:31 2018 No.1486329 >>1486300 you must already have a project in mind. why else would you buy all that shit?

>>	Anonymous Thu Oct 25 20:34:19 2018 No.1486332 >>1486329 I plan to build a night light

>>	Anonymous Thu Oct 25 20:55:40 2018 No.1486339 >>1486304 holy shit dawg

>>	Anonymous Thu Oct 25 22:20:42 2018 No.1486364 >>1486300 >what should I do with it? well since you asked.....in the rectum it goes Mike

Anonymous Fri Oct 26 11:21:46 2018 No.1486596

I want to make a progressive bar shift light like you see in an f1 car for my motorcycle. It's kind of hard to look at the tach when getting on it.
>Inb4 shift by ear faggot
I can with my car because I've had it 14 years. Not so with the bike. Plus it looks cool.

>>	Anonymous Fri Oct 26 11:23:25 2018 No.1486599 >>1483323 Lost >>1483401 This >>1483438 That's a slippery slope. Before you know it you're the next mr. Hands or whatever he was called.

>>	Anonymous Fri Oct 26 11:33:19 2018 No.1486601 File: 671 KB, 300x211, 1473549480737.gif [View same] [iqdb] [saucenao] [google] >>1485112 >peristaltic pump I knew I had a gif of this somewhere. Such a clever design. >>1485118 Kek, the only correct answer

>>	Sage Fri Oct 26 11:42:22 2018 No.1486607 File: 1.10 MB, 3264x1836, 20181026_113928.jpg [View same] [iqdb] [saucenao] [google] >>1486304 Hey, they're towing your van. I'd be mad if I worked at AutoZone too. Better start stretching now while you have the chance

>>	Anonymous Fri Oct 26 11:56:51 2018 No.1486619 >>1483640 >not shoving 32 pin dips up your dick

>>	Anonymous Fri Oct 26 12:04:19 2018 No.1486625 >>1486596 FAGGOT ALERT

>>	Anonymous Fri Oct 26 13:30:58 2018 No.1486652 >>1486625 What's your point?

>>	Anonymous Fri Oct 26 19:18:04 2018 No.1486816 >>1483190 >what can i do with an abestos board Head on down to adafruit and look at all those projects you can do over there

>>	Anonymous Fri Oct 26 19:41:34 2018 No.1486827 >>1486652 youre a head bobbin cock gobbler

>>	Anonymous Fri Oct 26 19:45:53 2018 No.1486829 File: 64 KB, 300x225, 1340037549799.jpg [View same] [iqdb] [saucenao] [google] >>1486827 oh yeah!? w-well your a sloppy goober doo-doo head!

Anonymous Fri Oct 26 20:37:21 2018 No.1486870

>>1483200
I would agree with you in most cases but an Arduino is one of those exceptiona where you just buy some shit and experiment with it. I did too and by learning as I went I am now able to do some pretty cool shit with it, including an outdoor light which switches on based on a preloaded timetable with sunset and -rise times making it independent from gay light sensors. And leds attached to the undersides of stair steps which can be programmed with a wall mounted light switch. I wouldn't have been able to do this stuff if I hadn't made some purposeless blinking led shit beforehand

>>	Anonymous Sat Oct 27 16:51:28 2018 No.1487336 >>1483200 checked. nice use of the arduino

>>	Anonymous Sat Oct 27 20:22:06 2018 No.1487444 >>1483190 Anyone did a Ambilight with one of these? Is the quality acceptable?

>>	Anonymous Sat Oct 27 20:43:00 2018 No.1487459 >>1487444 Easily possible, quality would be perfectly fine.

>>	Anonymous Sat Oct 27 20:44:40 2018 No.1487460 >>1487459 I saw somewhere that it would update too slow, making it looks like it updates at 15fps Is this no longer the case? I have an arduino, but it's a pro micro so not sure if it has the required interfaces.

>>	Anonymous Sat Oct 27 20:59:36 2018 No.1487471 >>1487460 oh that's the live tv thing? nvm, idk

>>	Anonymous Sun Oct 28 00:05:50 2018 No.1487602 >>1483190 Make it alternate between two LEDs.

>>	Anonymous Sun Oct 28 02:54:02 2018 No.1487652 >>1483190 I built this thing for my master thesis last year. had some good fun doing it https://youtu.be/ngT3sF_eBrg also kys

Anonymous Sun Oct 28 08:53:12 2018 No.1487743

>>1486870
>I wouldn't have been able to do this stuff if I hadn't made some purposeless blinking led shit beforehand

I wish more people realized this on this board. Then again maybe they do and it's just the opinionated loud mouths that piss in everyone's cornflakes.

>>1487652
I remember this. It's impressive but I'm wondering what you could apply that to in the real world. I imagine rocket engine gimbals might work in a similar manner?

>>	Anonymous Sun Oct 28 09:06:18 2018 No.1487748 >>1487652 no. fuck you.

Anonymous Sun Oct 28 13:50:59 2018 No.1487893
File: 154 KB, 1048x384, blinker.jpg [View same] [iqdb] [saucenao] [google]

>>1486318
>>1486300
Okay, so I got that pile of stuff last weekend. Finally used some of it and made my first "babby's-first-steps-project"

i made a blinking LED using a 555ic !!! Wooooo-Hooo!!!
It's green. and it blinks.

super basic super simple for /diy/ vets i know, but its my first thing i done like this in a long time. i have no EE training or education but i find it very interesting and fun. but learning as I go, starting at the beginnings.

eventually once i learn the Arduino a bit, I want to get into simple robotics, data acquisition, on-board PLC and semi-automated drones. that will be the real fun stuff for me,... someday

>>	Anonymous Sun Oct 28 13:56:06 2018 No.1487895 >>1487893 Parts list- Green LED 20ma 3-3.2v 2x 1k ohm resistors 470uF 10v Cap 3vdc pwr input is (two AAbatt in series) NE555P ic

>>	Anonymous Sun Oct 28 15:59:49 2018 No.1487955 >>1487893 cool anon :)

Anonymous Sun Oct 28 16:22:39 2018 No.1487973

>arduino is noob
Love these threads, especially the guys who forget they had learn to blink an led first. Actually quite fond of arduino, it got me started and I still use them for the 'get it done' projects, have begun to progress to AVR now as need more power and other packages

>>	Anonymous Sun Oct 28 16:39:35 2018 No.1487993 >>1487973 You must enjoy Lady Adas feminine penis.

>>	Anonymous Sun Oct 28 17:35:06 2018 No.1488049 >>1487993 not if he buys them for $1.50 from ali

>>	Anonymous Sun Oct 28 17:36:49 2018 No.1488051 File: 177 KB, 1240x436, blink ver1.1.jpg [View same] [iqdb] [saucenao] [google] >>1487893 >>1487895 cleaned up the layout a bit. i had extra jumper connections in there i didn't need

Anonymous Sun Oct 28 17:40:55 2018 No.1488055

>>1488049
is ali the goto place for components?
i've never bought anything off there before.
most online stores i look at i look at aren't any cheaper than amazon.
digikey and mouser look more like who i'd prefer to buy this stuff from but prices are up there

is Ebay any good for electronics components?

>>	Anonymous Sun Oct 28 17:41:10 2018 No.1488057 >>1488049 I do, chinesium nano's

>>	Anonymous Sun Oct 28 17:42:14 2018 No.1488058 >>1488057 (I M P R E S S I V E )

>>	Anonymous Sun Oct 28 17:46:27 2018 No.1488065 >>1488055 >>1488049 >ALIEXPRESS Hory shit i just looked at the prices for electronics components. is this for real? literally pennies on the dollar compared to Amazon and other online places

Anonymous Sun Oct 28 18:42:36 2018 No.1488102

>>1488055
>>1488065
It's the way to go, if you can get free shipping that is. Stuff takes like a month to arrive (sometimes as few as 10 days though) so you kind of have to plan ahead. There's a big sale thing going down on 11.11, check >>>/g/csg for more info (the infographic is over a year old though). You can buy something for $1 and get free shipping to your door, which is economically unfeasible without a sort of subsidy and/or trade agreement, and apparently the China-US trade agreement is collapsing a little so you may not be able to get free shipping on your chinkshit in a few months' time if you live in the USA. eBay has similar stuff at pretty good prices though with a different selection, and from the Chinese sellers you get the same free shipping. They're far better for old vacuum tubes and neons and other more obscure parts, but ali will probably always have the better selection of cheap mass-produced ICs and peripheral boards, plus they've got a pretty good return policy. There are other stores like Taobao and Alibaba which tend to have significantly better prices, with the catch that Alibaba is almost exclusively for bulk purchases and Taobao can only be ordered from by a Chinese agent.

When it comes to buying on ali, there are typically dozens of the same product being sold by different sellers, and I'd advise going for the ones that have the most purchases over the ones with slightly cheaper prices. If there aren't many results at all, try changing your search terms. Ensure you read the listing thoroughly. And sometimes you'll come across listings with very high (or low) prices that ask you to contact the seller to have them sell something specifically, so make sure you don't accidentally buy one of those. You can install Aliprice (third party plugin) to your browser which will give you price histories for all listings on AliExpress, to make sure you a sale isn't just a price ramp followed by a return to normal. Buying on a mobile gives discounts.

Anonymous Sun Oct 28 18:51:37 2018 No.1488107

>>1488102
okay. thanks for the lowdown. i have a pretty long shopping list as i'm just getting into this stuff.
so i want to buy a whole shitload of basic components and such. sounds like ali could easily save me several hundreds of dollars over the next few months

>>	Anonymous Sun Oct 28 20:04:45 2018 No.1488146 >>1487652 Masters thesis? This was one of our final year projects...did you implement a PID controller? And what board did you use? I remember a the project had to be done using a STM F7 SoC no noobduino allowed.

>>	Anonymous Sun Oct 28 20:07:26 2018 No.1488148 >>1487652 You could probably do that perfectly fine with just op-amps if you had some sort of analogue feedback system.

>>	Anonymous Mon Oct 29 05:38:52 2018 No.1488330 >>1488146 2 PIDs for position control. Used the Arduino Due (Cortex m3?). Care to show me the project you made?

Anonymous Mon Oct 29 09:06:54 2018 No.1488395

>>1487993
>implying you wouldn't take that feminine benis every which way from Sunday

>>1488055
Adafruit is good for beginners because it gives you every thing you need to complete their project including instructions and support.
It's more expensive but some people here forget that guidance is included in that price and hate on the place.

>>	Anonymous Mon Oct 29 09:18:22 2018 No.1488405 File: 175 KB, 1140x565, f1_wheel_big.jpg [View same] [iqdb] [saucenao] [google] >>1486827 So fucking what? I detect a mad cager that can't ride and now is butthurt about it. Pic related of what I would like to do.

Anonymous Mon Oct 29 10:36:02 2018 No.1488431

>>1488395
Adafruit/Arduino usa is poison. They build libraries that are not modifiable for actual use. Their documentation sucks beyond blink. They charge 5x the price of the hardware, but more importantly, they are thieves. The Arduino concept was from Italy until they stole it and setup shop with the exact same name. Bunch of two faced sjw assholes is what Arduino is. But no one's knocking down their monuments...

>>	Anonymous Mon Oct 29 10:55:36 2018 No.1488437 File: 95 KB, 1139x575, Screenshot_2018-10-29_10-55-16.png [View same] [iqdb] [saucenao] [google] >>1488431 >They build libraries that are not modifiable for actual use. explain how open source code cannot be modified.

>>	Anonymous Mon Oct 29 13:31:40 2018 No.1488525 File: 12 KB, 377x81, 1540798262952.jpg [View same] [iqdb] [saucenao] [google] >>1483190 i bought this to add network capability to the uno.

>>	Anonymous Mon Oct 29 13:39:31 2018 No.1488530 File: 611 KB, 1024x844, tech.jpg [View same] [iqdb] [saucenao] [google] >>1488525 >network board post ip so we can control your robots

>>	Anonymous Mon Oct 29 13:54:56 2018 No.1488541 >>1487973 >I still use them for the 'get it done' projects, have begun to progress to AVR now >still use them >have begun

>>	Anonymous Mon Oct 29 15:18:50 2018 No.1488584 >>1488541 maybe he means arduino is C++ and AVR is assembly? who knows.

Anonymous Mon Oct 29 15:27:31 2018 No.1488589

>>1488584
i meant when he says i still use them i had an image of an old man dusting off a box from his attic and reveling nostalgia of years gone by when he was a whippersnapper.
the twist is the reveal that he is just getting into using bare avr and arduino years were only yesterday.

>>	Anonymous Mon Oct 29 18:49:03 2018 No.1488671 >>1483200 >However, you could always make a sentient AI that turns into a fascist. No you can't. Arduino memory can't handle anything like that. You simply loaded the LCD demo file and changed the text. Get out

>>	Anonymous Mon Oct 29 20:27:21 2018 No.1488733 >>1488671 I hope this is bait

>>	Anonymous Tue Oct 30 12:59:08 2018 No.1489106 >>1488671 Kek, I can't tell if this faggot didn't get the joke, is trolling or is just plain retarded.

>>	Anonymous Tue Oct 30 13:00:15 2018 No.1489107 File: 53 KB, 300x494, 64CC39B7-D5F5-46AE-BBF4-415287928838.jpg [View same] [iqdb] [saucenao] [google] Your benis will be assimilated.

>>	Anonymous Tue Oct 30 13:04:46 2018 No.1489108 >>1489107 Is that who I think it is?

>>	Anonymous Tue Oct 30 13:25:12 2018 No.1489113 >>1489108 The answer to that would depend on who you think it is.

>>	Anonymous Tue Oct 30 15:27:10 2018 No.1489177 >>1489113 The underage b& version of lady adafruit (or whatever she's called)

Anonymous Tue Oct 30 15:35:49 2018 No.1489184
File: 1.70 MB, 3264x1836, 20181030_151555.jpg [View same] [iqdb] [saucenao] [google]

This thing operates on ir and we lost the remote. All I need to do is turn the thing on and off and to activate the electric heater.
I have difficulty reaching the controls due to a bad back injury and would like to make a replacement.
Don't even care if it's bulky with wires sticking out.

Anonymous Tue Oct 30 16:52:12 2018 No.1489226

>>1489184
Getting a replacement remote is possible, but somewhat unlikely. Making a remote is less likely than that, since you don't have an existing remote to demodulate and figure out the right signal to send. It's probably not possible to add something into the circuit to turn it on and off at the press of a button for the same reason, you'd need to emulate the unknown received signal after the photodiode. So instead I'd go for a (latching) relay inline with the power socket and have a remote or long wires leading to a button on that. Does leaving it on at the front and turning it off then on at the wall keep it on? In which case you could buy one of those ~$10 remote plugs and leave it at that. I've a friend who's trying to make his own, but it's turning out more expensive than what you could buy. Looking on eBay for a replacement remote is also a very valid alternative, if you know what you're looking for.

If you're lucky you could look at the circuit of the heater, see what IC it's using to demodulate the signals, and find out what signals you need to send it from it's datasheet (i.e. what frequency, what order and rate of binary pulses).

Anonymous Tue Oct 30 17:37:01 2018 No.1489262
File: 108 KB, 600x535, 1466692859508.jpg [View same] [iqdb] [saucenao] [google]

>>1489226
>you don't have an existing remote to demodulate and figure out the right signal to send
I figured as much. Doubtful I'd find them online either.
>Does leaving it on at the front and turning it off then on at the wall keep it on?
I'm not sure but I don't think so. I'll double check though.

I'm probably not knowledgeable enough but I think it would be possible to just make my own remote with known codes and either hook it up to the circuit board or even make my own. It's such a basic operation. You need to toggle the overall system power and then power to the heater, which I'm guessing uses a relay.

Anonymous Tue Oct 30 17:56:15 2018 No.1489280

>>1489262
I don't have any experience with messing about with IR remotes but it's entirely possible that they all use a similar set of codes. Of course they can't be the same since then turning on your TV would turn on your heater and AC too, but you can buy those universal TV remotes.

>>	Anonymous Tue Oct 30 17:59:10 2018 No.1489283 >>1489184 >>1489226 >>1489262 >>1489280 Would it be possible to buy an IR transmitter, and have it go through codes until the unit turned on? Also, does the manufacturer state what their IR code may be?

Anonymous Tue Oct 30 18:05:03 2018 No.1489288
File: 118 KB, 1259x853, menu-ramen.jpg [View same] [iqdb] [saucenao] [google]

>>1488431
Sparkfun is even worse. I wasted a lot of money there because I hated Mouser/Digikey/RS unpredictable lead times. Switched to Adafruit, then stopped wasting money.

Yet it's true that not a single part from them was ever DOA or a cheap chink clone.

Arduino was successful in early 2000's because there was literally no other board with a working IDE letting you do things like "digitalWrite(pin,1)". Arduino guys were more tech nerds than marketing experts, yet they managed to survive ages past the forest of "...ino" clones, and even starting the usual Italian drama "sue me! - no u".

The next step was obviously something that could run Linux. I clearly remember ten years ago the available boards were 16 or 32 megabytes RAM. Then the Beagleboard came out, a 256 Mb RAM (the original model was 128Mb), quite well equipped, and a new revolution started. Just like the Arduino, the Beagleboard success was mostly due to hobbyists blogging about their projects. 256 Mb were - still are - enough to run a full fledged Linux box, including HTTPS and a database. As usual, a lot of similar boards came out. Someone sporting more memory, some other sporting a hard disk connector, no real innovation.

In fact, with a very few exceptions, most projects were no more than the usual NAS, the usual multimedia box, the usual home server. To date, they still have to learn the First Lesson: if you strictly demand real amperes and strict 5V, you won't go much far. If it accepted anything between 6 and 28 volts, you'll get absurd amounts of automotive and battery-powered projects. Nope. You have to buy Adapters. And other Adapters. And extra Adapters...

Then it came the English Parochialism™: the Raspberry Pi. Touted as an UK product (OMG, that *obviously* stands for quality) and cheap (it was never the cheapest), in a few years became the Hurr Durr New Arduino. Always a couple generations behind the Beagleboard, always failing at accepting anything other than "some amperes at 5V".

Anonymous Tue Oct 30 19:57:40 2018 No.1489351

>>1489283
With a little extra trickery, yes. AFAIK IR receivers and transmitters send AC IR instead of DC; they have a frequency of so many Hz so the receiver can simply throw a filter on it and get out only the desired data, and no ambient IR fluctuations. Much like morse code receivers. So by reading/testing the values of the passives on the receiver, you should be able to figure out what frequency they're tuned to. This narrows down half the guessing in the dark, though standard frequencies would probably be easy enough to find. For the rest, the codes themselves, you'd be better off scouring what existing documentation on other products exist (if you can't find it for that manufacturer). if you have a phone with an IR blaster you may be able to find an app that can turn the heater on. At which point it should be fairly easy to backtrace what code was sent and just throw that into a tiny MCU.

Anonymous Tue Oct 30 20:44:36 2018 No.1489373

>>1489351
>AFAIK IR receivers and transmitters send AC IR instead of DC; they have a frequency of so many Hz so the receiver can simply throw a filter on it and get out only the desired data

I didn't know it worked like that. Anywhere I can read more about ir?

Anonymous Tue Oct 30 22:02:10 2018 No.1489404

>>1489373
It's not something I learnt from existing products, but rather something I realised I had to do when doing something similar. With a normal IR receiver, the IR from sunlight fluctuates by a huge amount over the day, so you have to block that with a high-pass filter, meaning your signal has to be at a high enough frequency. The IR from indoor lighting is also quite significant, and it oscillates at 100/120Hz, so you typically have to go a ways above that. Though in my case we were designing a pulse oximeter, so we had to filter out the 100Hz fluorescent lighting with a low-pass and filter out the slow ambient changes with a high-pass, resulting in a band-pass filter that let through anything from 0.1Hz to about 10Hz.

>>	Anonymous Tue Oct 30 22:30:29 2018 No.1489418 >>1489404 >designing a pulse oximeter, so we had to filter out the 100Hz fluorescent lighting Oh wow, never would have known that could interfere with a sensor on the finger. I learned a lot just from your post. Are you an optical engineer?

>>	Anonymous Tue Oct 30 22:32:15 2018 No.1489420 >>1489418 Physics student, it was a class project. Had everything from filter design to digital signal processing and fast fourier transforms. It was a fun paper.

>>	Anonymous Tue Oct 30 22:35:10 2018 No.1489424 >>1489420 I wish I was smart enough to be an engineer.

>>	Anonymous Tue Oct 30 23:03:40 2018 No.1489439 >>1489424 me too

>>	Anonymous Tue Oct 30 23:09:42 2018 No.1489441 >>1488437 Because they don't document what resources they use. It's learned through the blogs.

Anonymous Wed Oct 31 13:54:18 2018 No.1489680
File: 61 KB, 1601x960, e3J6hDa[1].jpg [View same] [iqdb] [saucenao] [google]

Hey guys, I'm building some automated instruments and I've stumbled onto this:
https://www.youtube.com/watch?v=k-8scPcSoVI

Does anyone know what are those things at the bottom? Are they the electromagnetic relays the dude mentioned in the description? I've looked them up and couldn't find similar examples, where something would mechanically move just like those things in the video.

>>	Anonymous Wed Oct 31 14:01:56 2018 No.1489685 File: 102 KB, 1200x900, 413-00.jpg [View same] [iqdb] [saucenao] [google] >>1489680 Solenoids?

Anonymous Wed Oct 31 14:09:56 2018 No.1489691
File: 13 KB, 270x382, 1386262305893.jpg [View same] [iqdb] [saucenao] [google]

>>1489685
>Solenoids
negro you've made my day
this is great cause I've been looking for relatively cheap ways of making hammers for percussion. Stepper motors were a bit weak and this looks perfect
thanks bro

>>	Anonymous Wed Oct 31 14:34:27 2018 No.1489706 >>1489691 You could use the solenoid to activate something else, like hydraulic or air powered...

>>	Anonymous Wed Oct 31 15:17:03 2018 No.1489738 >>1483190 You could make a weather station, or a cheap alarm system... for your rectum.

>>	Anonymous Thu Nov 1 17:22:05 2018 No.1490236 File: 22 KB, 300x100, 128.jpg [View same] [iqdb] [saucenao] [google] >>1489738 >Be American >Need alarm system to protect your butthole gg burgers

>>	Anonymous Thu Nov 1 21:17:46 2018 No.1490352 >>1490236 Only if you're in jail.

>>	Anonymous Fri Nov 2 17:41:11 2018 No.1490722 >>1489177 not the anon you are replying to, but I thought the same thing.

Anonymous Fri Nov 2 18:12:06 2018 No.1490747
File: 115 KB, 540x643, Fried-Limor-2014Connector-web_0.jpg [View same] [iqdb] [saucenao] [google]

>>1490722
>but I thought the same thing.

I'm too old to follow this part of the thread, but I don't think that pic was Limor Fried, who is someone you would recognize from a mile away and have nightmares about for at least a month afterwards.

>>	Anonymous Fri Nov 2 18:14:35 2018 No.1490749 >>1490747 after actually looking at the pic, I guess it probably was her before her final metamorphosis into her adult stage.

>>	Anonymous Fri Nov 2 23:56:06 2018 No.1490919 >>1490747 Her chin gave it away from the pic

Anonymous Sat Nov 3 10:27:08 2018 No.1491043

Not sure if this is the right place to ask, but will an Arduino Leonardo based input device be feasible for playing vidya?
I want to make custom controllers for games, would the Leonardo be fast enough to receive and send inputs, or should I look into another piece of hardware?

>>	Anonymous Sat Nov 3 14:05:08 2018 No.1491129 I want to get an arduino or a raspberry and use it to manage an amplificator and listen to music

>>	Anonymous Sat Nov 3 14:14:07 2018 No.1491135 >>1491129 Sadly this is the worst thing you could do for audio.

>>	Anonymous Sat Nov 3 15:05:33 2018 No.1491160 File: 128 KB, 851x673, 1536950521866.jpg [View same] [iqdb] [saucenao] [google]

Anonymous Sat Nov 3 16:10:36 2018 No.1491181

>>1491135
why?
the story made short is something like this:
>buy a hifi
>tiny silly part breaks
>the whole thing stops working
>buy another one
>same thing again.
I'm tired of being jewed buying the whole thing. I have 4 speakers I can use, I ws thinking on punchasing an aplifier, so I can plug whatever I want to it an if something breaks, replace the part instead of everything.
and to manage all that, a little computer. I was thinking on a raspberry/Arduino, but if that won't work I will go to some low end PC.
Truth be told, I'm not putting much effort in this project at the moment as I hve little time and money to fuck with

>>	Anonymous Sat Nov 3 16:37:38 2018 No.1491198 >>1491181 What would the MCU do though?

>>	Anonymous Sat Nov 3 16:43:32 2018 No.1491201 >>1491198 Allow me to use the thing and play music. if I want to pick a song or skip something

>>	Anonymous Sat Nov 3 16:46:28 2018 No.1491203 >>1491201 Don't need an MCU for that, just use a DFplayer module standalone or something similar.

>>	Anonymous Sat Nov 3 16:49:31 2018 No.1491206 >>1491203 >DFplayer module standalone I0m afraid my knowledge is too limited and I can't understand what you tell me, I'm googling that stuff, but all I find are electronic component images. WIll search more about it.

Anonymous Sat Nov 3 16:55:05 2018 No.1491211

>>1491206
https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299
It's got a microSD card slot (up to 32GB), a 24bit DAC, left and right outputs, and positions for buttons. You can send serial commands to it from a micro, but why bother if it's already got pins for button control. Feed the output to a stereo class-D and you've got a pretty good player. I haven't tried the thing and have no idea what its audio quality is like though. If you want a screen then just buy a chink MP3 player and wire the output into an amp.

>>	Anonymous Sat Nov 3 17:00:14 2018 No.1491212 >>1491211 I will consider this and bother this thread no more. If some day I finally start the damn thing, I'll post the process here.

>>	Anonymous Sat Nov 3 23:00:45 2018 No.1491422 >>1489288 how is sparkfun worse?

Anonymous Sun Nov 4 15:12:08 2018 No.1491811
File: 3 KB, 246x205, index.png [View same] [iqdb] [saucenao] [google]

No picture of it but one of my favorite projects so far, was a table tennis scoreboard. I used two big pushbuttons similar to the ones found on dart-machines for input. I used shift registers driving the four seven segment digits to display the score of each player. That was before i knew that the MAX7219 was a thing. Once a player hits 11 points, the score of each goes back to 0. There is also an LED for each player to indicate who is serving.

>>	Anonymous Sun Nov 4 19:31:40 2018 No.1491935 File: 3.34 MB, 4032x3024, 20181104_171949.jpg [View same] [iqdb] [saucenao] [google] >>1483190 Noob reporting in.Look what I have created. One step closer to building the perfect animu robot waifu

>>	Anonymous Mon Nov 5 21:12:25 2018 No.1492471 >>1489288 where the fuck can you find documentation on the beaglebone blue?

>>	Anonymous Fri Nov 9 21:06:47 2018 No.1494630 >>1491935 >gozimasu

Anonymous Sat Nov 10 09:12:49 2018 No.1494869

i know a guy that made an Arduino submarine, he drive it around in a blow up pool, it's crazy

for a good beginner project, my dad replaced the tennis balls in our garage with a stoplight looking thing. distance sensor + strip of multicolor LEDs are all you need

>>	Anonymous Sat Nov 10 09:15:28 2018 No.1494873 >>1494869 also worth noting that the chinese arduinos use the same software and everything as the real ones, my dad orders like 10 for the same price as one genuine one. same goes for sensors and stuff, that stuff is all over aliexpress

>>	Anonymous Sat Nov 10 09:18:03 2018 No.1494876 >>1491935 Now do it in hiragana.

>>	Anonymous Sat Nov 10 10:17:50 2018 No.1494895 >>1494873 The only problem with stuff on Aliexpress is shipping. “Order now for delivery between January 8th and March 19th”

>>	Anonymous Sat Nov 10 12:15:18 2018 No.1494957 >>1483232 At least for the Pi you can get the Mag Pi magazine which is loaded with projects every month,

>>	Anonymous Sat Nov 10 12:24:31 2018 No.1494961 File: 1.33 MB, 1840x2342, 0j3vukc2osvz.jpg [View same] [iqdb] [saucenao] [google] >>1490747 Why do women in STEM need to look poisonous

Anonymous Sat Nov 10 14:09:18 2018 No.1495003

So I'm thinking of experimenting with connecting multiple atmega32 units together, max distance aprox 6 meters and 4 nodes during prototyping, but probably hitting closer to 40 when I start building in earnest.

I'm looking into using a canbus for this purpose to reduce cabling needs. As the standard needs twisted pairs of cables for transmission, would a standard cat5 cable work for the purpose? I can't really think of any better alternative that is also sufficiently protected and easy to cable

>>	Anonymous Sat Nov 10 14:21:07 2018 No.1495009 >>1495003 what are you building?

>>	Anonymous Sat Nov 10 14:23:20 2018 No.1495013 >>1495009 >what are you building? started modeling an a-10c pit in fusion 360 and currently prototyping panels.

>>	Anonymous Sun Nov 11 05:38:19 2018 No.1495345 >>1483233 Underrated post

>>	Anonymous Sun Nov 11 15:16:35 2018 No.1495627 >>1495013 Dumb answer: yes Cat5 works for canbus. Better answer: for low level shit with a lots of noise, you can find cheap shielded twisted pair cable online.

>>	Anonymous Sun Nov 11 15:59:07 2018 No.1495652 >>1495627 thanks, I'll probably stick with cat5 then due to the fact that I have multiple spools of cat5e in my basement

Anonymous Sun Nov 11 18:01:50 2018 No.1495713

>>1495003
>I'm looking into using a canbus for this purpose to reduce cabling needs.
Do some atmegas come with canbus now? I know that the cheap STM32 boards have it built in (two actually for the STM32F103)
>would a standard cat5 cable work for the purpose?
don't see why not.

Anonymous Sun Nov 11 18:40:15 2018 No.1495739

>>1495713
>Do some atmegas come with canbus now? I know that the cheap STM32 boards have it built in (two actually for the STM32F103)
STM32 do, dunno about AVR.

In the grand scheme of a project like this the additional cost of the CANBUS hardware is negligible and I'm not sure if I want the overhead of learning the STM32 architecture right now either, but the only real requirement is that the master node needs to be an AVR due to the library, DCS-BIOS, used to interface with the simulator.

>>	Anonymous Sun Nov 11 19:11:23 2018 No.1495750 i want to hook up two different sensors to my Arduino. but they both need to use the scl & sda inputs on the board. can i use a4 & a5 as another set of scl & sda inputs?

>>	Anonymous Sun Nov 11 20:44:24 2018 No.1495802 >>1483200 Fucking kek! Hey op >ardumower

>>	Anonymous Sun Nov 11 20:49:14 2018 No.1495803 >>1483668 BOOT. ON. THE. GROUND.

Anonymous Sun Nov 11 21:03:40 2018 No.1495811

>>1495750
If it's I2C then it's a bus and the devices can share the same pins, as long as you give your devices different addresses (usually a combination of setting some pins +v and gnd). Add some pull-up resistors and you should be good to go (then run i2cscanner sketch to see what's what)

I'm running a LCD backpack and 4 i/o expanders off the same sda/scl pins on a cheap Arduino nano clone.

>>	Anonymous Mon Nov 12 14:43:32 2018 No.1496193 >>1495811 You actually don’t need pull up resistors for an Uno/Mega. The SDA and SCL pins have them on the board. I2C is fucking badass IMO. You can (hypothetically) run like 1024 peripherals off two pins from your arduino.

Anonymous Mon Nov 12 15:11:27 2018 No.1496207

>>1495811
>>1496193
I ran the I2C sketch and was able to get the address of my BMP180 = address 119

when I run the scan on the DS3231 PRECISION TIMER all I get is gobbly gook. but the data sheet indicates it has an address of "1101000"

I don't know how to turn that into an I2C address though

>>	Anonymous Mon Nov 12 15:15:23 2018 No.1496209 >>1496193 >You can (hypothetically) run like 1024 peripherals off two pins from your arduino that sounds awesome. but i'm having trouble getting the addresses

>>	Anonymous Mon Nov 12 15:15:47 2018 No.1496210 >>1496207 1101000 is binary but the address you need to put in for wire.h is hex. Try 0068 or x068

Anonymous Mon Nov 12 15:26:20 2018 No.1496216

>>1496209
Use this to find the addresses for all of your components. If you’re not hooked up right you won’t get anything. https://playground.arduino.cc/Main/I2cScanner
Make sure your peripherals are getting powered up right, some are 3.3V and some are 5V.

Make sure you put your address into your sketch in Hex as >>1496210 said.
And it should really be 0068.

Anonymous Mon Nov 12 15:31:09 2018 No.1496219

>>1496193
>I2C is fucking badass IMO. You can (hypothetically) run like 1024 peripherals off two pins from your arduino.

Yep, it's a cool interface, so easy to get stuff working, and you can get it to run at 400khz instead of the standard 100khz like so, if your devices support it (most do nowadays):

>TWBR = ((F_CPU / 400000) - 16) / 2;

>when I run the scan on the DS3231 PRECISION TIMER all I get is gobbly gook. but the data sheet indicates it has an address of "1101000"
>I don't know how to turn that into an I2C address though
1101000 in binary = 0x68 in hex, so something like
>Wire.beginTransmission(0x68);
>Wire.requestFrom(0x68, <number of bytes to read here>);
or even
>Wire.beginTransmission(B01101000);
>etc
might work. Mind you, someone's already made an arduino library for it, so try that.

>>	Anonymous Mon Nov 12 15:31:50 2018 No.1496221 >>1496210 >>1496216 okay i'll try that next. thanks

Anonymous Mon Nov 12 16:44:24 2018 No.1496267

I am planning on making an automated watering system based on the Uno .I plan on using 2 solar panels giving out 4 volts stepping that up to 12 to charge a 12v battery that will power the arduino and a 12 pump. At first I will use the arduino as timer but I want to see if can do something with the a humidity sensor

>>	Anonymous Mon Nov 12 18:47:22 2018 No.1496324 File: 137 KB, 700x700, soile LARGE.jpg [View same] [iqdb] [saucenao] [google] >>1496267 how about a moisture sensor? https://www.instructables.com/id/Soil-Moisture-Sensor-Test-Plan/

>>	Anonymous Mon Nov 12 18:50:19 2018 No.1496329 >>1496324 yeah I meant that but at first I wanna see if it will be able to recharge it self and then expand upon it

>>	Anonymous Mon Nov 12 18:54:12 2018 No.1496337 >>1496324 >>1496267 btw should I use Li-Po/Li-Ion or stick with a lead acid one ?

>>	Anonymous Mon Nov 12 19:00:58 2018 No.1496344 >>1496337 offhand idk which would be best for solar charging and storage

>>	Anonymous Mon Nov 12 19:07:59 2018 No.1496347 >>1496324 The moisture sensors based on soil conductivity are cheap and easy, but a bit shit, the electrodes corrode after a while. Look into capacitive sensors to avoid this problem.

Anonymous Mon Nov 12 19:16:02 2018 No.1496355
File: 253 KB, 818x747, avr_can.png [View same] [iqdb] [saucenao] [google]

Figured it out, they made CAN integrated AVR for the automotive industry for both the 8 bit and 32 bit chips, going to get those as they cost roughly the same as their normal atmega versions, but save me 5 dollars worth of can controllers/transceivers per unit and takes up less space than fitting those

Anonymous Mon Nov 12 19:21:12 2018 No.1496358
File: 149 KB, 795x902, avr_can2.png [View same] [iqdb] [saucenao] [google]

>>1496355
lol, just noticed the AT90CANx chips all seemed to have like 2k or 4k minimum order. But it's all good, ATmega16M1/32M1/64M1 line has a can controller too and is just your normal atmega otherwise

>>	Anonymous Mon Nov 12 19:39:13 2018 No.1496369 >>1496358 ehh, bugger, they don't come in dip format so I guess i'll do the prototyping with an external controller/transceiver and change when I convert to PCB

>>	Anonymous Mon Nov 12 19:57:43 2018 No.1496380 >>1496358 Will they give you some free engineering samples to play with if you asked?

Anonymous Mon Nov 12 20:02:35 2018 No.1496383

>>1496337
Lead acid is waaaaay easier to charge. Just throw a blocking diode in and you’re done. Lipo/liIon need CV/CC charge circuits, and they’re more expensive. Even nmh make your power circuit exponentially more complicated (expensive) than LA.
>>1496347 yup. I read someone used a BME280 inside a cup, upside down burrried and the soil and it worked a lot better than those chinsey adafruit probes. And for something like that you should cover all of the other subterranean parts in silicon or nail polish to keep them from corroding to shit.

Anonymous Mon Nov 12 20:02:53 2018 No.1496384
File: 35 KB, 1000x750, qfn44_breakout.jpg [View same] [iqdb] [saucenao] [google]

>>1496369
or rather, there's standard breakout boards available for both QFN and TQFN, might as well use that so I don't have to redo the BOM afterwards. I sure do notice my lack of experience in this field, haven't touched a soldering iron since university. Thankfully I did have classes on electro engineering so I'm not completely green.

>>1496380
>Will they give you some free engineering samples to play with if you asked?
Doubt it, can't be bothered either due to time constraints. I noticed it was only the cheaper AT90CANxxx ones with huge minimum orders, the ATmegaxxxM1 were available in singles. They atmega ones have like a third of the message buffer size tough, but it's ok for the nodes, only the master that interfaces with the simulator needs a big one and I can shell out the extra few dollars for the more expensive kind there

>>	Anonymous Tue Nov 13 06:54:06 2018 No.1496575 >>1483200 What kind of screen/shield is that, if any? The standard LCD screen requires like 20 wires and takes up all signal ports for any other devices.

>>	Anonymous Tue Nov 13 07:22:19 2018 No.1496583 >>1496575 looks like an oled of some kind

>>	Anonymous Tue Nov 13 08:48:56 2018 No.1496617 >>1496575 >>1496583 Looks like the generic 128x64 chinese oled They cost like a dollar

>>	Anonymous Tue Nov 13 10:32:02 2018 No.1496657 >>1496575 >The standard LCD screen requires like 20 wires and takes up all signal ports for any other devices. you need to use a controller, noone in their sane mind does 1 to 1 pin connections for an LCD

>>	Anonymous Tue Nov 13 12:37:14 2018 No.1496707 so I rethought the watering project i am gonna skip the battery entirely and use a moisture sensor. The unit will operate only during daylight and it will use the sensor to tell when watering is needed

Anonymous Tue Nov 13 12:47:48 2018 No.1496711

>>1496575
Check YouTube for videos on running an LCD/OLED with I2C. You can get the display with the I2C backpack included so you know they work.
>>1496707
Might want to hook up a supercap or small LA battery so your aren’t constantly rebooting the controller every time the open cell voltage from your solar gets above 5V then immediately shuts off when the system kicks load on. Or just plug it into your wall.

Anonymous Tue Nov 13 14:08:06 2018 No.1496735
File: 2.95 MB, 4128x3096, 20181010_151510.jpg [View same] [iqdb] [saucenao] [google]

>>1489288
I bought a Sparkfun mpu9250 breakout board. Turns out a power trace is too close to the magnetometer. I was getting heading accuracy twice as bad as the heading accuracy I get using a Hiletgo breakout board.
So I can confirm: Sparkfun bad.

>>	Anonymous Wed Nov 14 03:03:29 2018 No.1497034 >>1486304 have fun spending the rest of your life in guantanamo bay

>>	Anonymous Wed Nov 14 06:29:39 2018 No.1497073 >>1486304 Remember to include instructions how to charge the capacitator

Anonymous Wed Nov 14 19:21:48 2018 No.1497469
File: 22 KB, 400x400, 1481155742193615729[1].jpg [View same] [iqdb] [saucenao] [google]

Hey guys, I am working on project using esp8266
>pic related

I want to communicate with the esp8266 using my android phone.

I did some google searching, and I see people saying doing POST and GET to communicate with it.

Is this the only way, or is it the "best" way?

Anonymous Wed Nov 14 19:41:04 2018 No.1497492

Godammit! I've been working with RF modules in order to transmit information from one arduino to another. Since communication is asynchronous I need some method of ensuring the receiver reads the data correctly. Data occupies 4 bytes.
In one method I added a prefix with a pattern that does not match any combination of partial packets and all is fine (3 bytes at 255) but theres a catch: Im using a joystick with 6 buttons and Im assuming that the user cannot press them all at once, otherwise the very first information byte can be at 255 (the two lowest significant bits of the first byte are used for one of the axis).
In order to attempt a strategy that allows me to use said combination of buttons I also tried an additive checksum (just one extra byte) but for some reason the son of a bitch gives me a lot of errors due to ambiguities from overflow. Does anyone here have experience in this crap?

>>	Anonymous Wed Nov 14 19:50:00 2018 No.1497497 >>1497492 Nvm. Il just shift some bits and always have the latest bit of the first byte at zero. I just find it strange that the checksum method kept giving me crap.

>>	Anonymous Wed Nov 14 19:56:30 2018 No.1497501 >>1497469 No.... What are you wanting to do. It matters.

>>	Anonymous Wed Nov 14 20:32:33 2018 No.1497517 >>1497501 Download file from spiff on esp8266, change settings, like in general, and wifi settings. parse file and view it on my phone. Stuff like that.. If that helps.

Anonymous Wed Nov 14 21:31:13 2018 No.1497538

>>1497517
>Is this the only way, or is it the "best" way?
basically with a wifi module you got the tcp/ip stack, you can do whatever you want to do with it that you can do between computers. Using a rest api makes sense for most normal situations where you don't require a constant connection, otherwise you can just run a normal socket if you need constant connection (or use an http2 server that is configured for a permanent connection)

tldr: POST and GET is perfectly fine, use sockets if you need a live connection

>>	Anonymous Wed Nov 14 21:32:34 2018 No.1497539 >>1497517 Sockets, ftp, post etc. Watch where you put the loop. It's all meant to be written asynchronously.

>>	Anonymous Thu Nov 15 11:55:29 2018 No.1497770 >>1496324 That garbage is going to kill you Plants use one of those for the prototipo and for the real version get a capacitor moister sensor

Anonymous Thu Nov 15 14:42:36 2018 No.1497880
File: 1.99 MB, 370x319, fzIUhZJ.gif [View same] [iqdb] [saucenao] [google]

My sister's dog is darker than the night itself and it's hard to keep track of her visually.
What do you think about an led collar that automatically turns itself on and off when via a light sensor. That way I can just open the door to let her out when she needs to go to the bathroom at night without needing to switch anything on.

Anonymous Thu Nov 15 22:02:18 2018 No.1498106
File: 748 KB, 2048x1536, 0E0DD6D0-9CF2-490D-B1B1-320BD2D66732.jpg [View same] [iqdb] [saucenao] [google]

I made a thing.
>BME280
>20x4 lcd with I2C backpack (the library for that backpack was a nightmare to find, but it was $2.80)
>voltage divider battery monitor

Also, you can put it in your butt.

>>	Anonymous Thu Nov 15 22:26:14 2018 No.1498121 >>1483196 Do this one OP

>>	Anonymous Fri Nov 16 04:28:47 2018 No.1498225 >>1498106 >Also, you can put it in your butt. I think you know what to do OP

>>	Anonymous Fri Nov 16 10:16:10 2018 No.1498346 File: 23 KB, 569x153, 1535758719096.jpg [View same] [iqdb] [saucenao] [google] Semi related, has anyone here used a strain gauge? Any type precise enough to track muscle movements?

Anonymous Fri Nov 16 10:49:55 2018 No.1498365
File: 103 KB, 1084x542, nintendo-power-glove-hi-res-2.jpg [View same] [iqdb] [saucenao] [google]

>>1498346
>Any type precise enough to track muscle movements?
Subtle movements like tightening muscles? No idea.
Actual limb movements? definitely. The power glove, in all seriousness, did just that. And it does actually work a lot better than you would think, it's just that the title backwards compatibility worked like crap and it's generally a shitty way to play games. The one custom coded game for it that was released did actually work great.

>>	Anonymous Fri Nov 16 10:51:37 2018 No.1498367 >>1483190 Toilet cam

>>	Anonymous Fri Nov 16 10:52:09 2018 No.1498368 >>1498365 I want something more precise though. Enough to maybe track finger movements from your wrist. Or facial movements.

>>	Anonymous Fri Nov 16 11:01:35 2018 No.1498377 >>1498368 >Enough to maybe track finger movements from your wrist. That can be done >Or facial movements. That's in the realm of cameras and machine learning algorithms

Anonymous Fri Nov 16 11:12:13 2018 No.1498382

>>1497880
Bumping for dog collar help
>>1498365
Based power glove. The 90's was a great time to be a kid desu. We still had imaginations and played outside, and tech was just coming into its own including portable gaming.
>>1498368
What are you working on?

>>	Anonymous Fri Nov 16 11:13:05 2018 No.1498383 >>1498382 Nothing, I just want to know if something like that exists. Could be useful in the future

Anonymous Fri Nov 16 12:23:36 2018 No.1498424

>>1498382
What help do you need for your light up dog collar?
>Plastic coated LED string
>arduino nano
>photoresistor to analog input
>cover the electronics in silicone caulking for water/abrasion resistance

Do I need to write the fucking code for you?

>>	Anonymous Fri Nov 16 16:30:29 2018 No.1498550 File: 226 KB, 1008x756, 20181116_140638.jpg [View same] [iqdb] [saucenao] [google] >>1486300 >another pile of boxes appeared at the door. oh no! what could it be!?

>>	Anonymous Fri Nov 16 16:53:01 2018 No.1498561 File: 279 KB, 1008x756, 20181116_141928.jpg [View same] [iqdb] [saucenao] [google] >>1498550 Looks like it's a bunch of stuff

>>	Anonymous Fri Nov 16 17:40:40 2018 No.1498582 File: 305 KB, 768x1024, Fork20-23-12.png [View same] [iqdb] [saucenao] [google] >>1498561 so, anon, are you the arduino version of Bepis? you buy lots of shit but never do anything worthwhile? show us your cool blinkies.

Anonymous Fri Nov 16 18:57:32 2018 No.1498627
File: 119 KB, 807x605, 20181111_171235.jpg [View same] [iqdb] [saucenao] [google]

>>1498582
maybe, i dunno.
got a few ideas of things i want to build. don't know how to program arduino too well yet though. not much time to work on it right now.
so far i made some blinking leds.
got my lcd to display
and was able to get sensor data from sensor to Arduino and to the lcd display.
if i get a long weekend i plan to do something more,

>>	Anonymous Fri Nov 16 19:12:09 2018 No.1498634 File: 72 KB, 645x729, brainlet.png [View same] [iqdb] [saucenao] [google] >>1483190 >hi guys i bought an arduino because i saw something on reddit what can i do with it

>>	Anonymous Fri Nov 16 19:48:12 2018 No.1498646 File: 54 KB, 354x320, huurrdurrr.jpg [View same] [iqdb] [saucenao] [google] >>1498634 >hi gais. i'm here to parrot memes because im so smart than everyone

>>	Anonymous Fri Nov 16 19:52:19 2018 No.1498647 File: 171 KB, 756x567, little Bepus.jpg [View same] [iqdb] [saucenao] [google] >>1498582

>>	Anonymous Sat Nov 17 08:50:18 2018 No.1498888 >>1491043 It is possible

Anonymous Sat Nov 17 11:47:02 2018 No.1498937

>>1491043
Dude, and arduino with any of the available microcontrollers on it is actually way overkill for a controller. I doubt any mainstay controller pre 2005 had a controller in them, it was just wirings and an encoder

So yes, you can build a controller with a Leonardo

Anonymous Sat Nov 17 12:16:04 2018 No.1498944
File: 28 KB, 264x292, 1534165979993.jpg [View same] [iqdb] [saucenao] [google]

>>1498346
>>1498368

>Semi related, has anyone here used a strain gauge?

I used one to measure how much a steel beam was bending (in a physics class). They are VERY precise and sensitive to any kind of bending.

But you have to think about the application, while it can detect movement, is it the best option or could you do the tracking in a different way?

>>	Anonymous Sat Nov 17 21:20:03 2018 No.1499219 What would I need to have a real-time display of the speed of all four wheels on a full size car?

>>	Anonymous Sat Nov 17 21:48:25 2018 No.1499232 >>1499219 >vehicle speed from speedometer >convert miles into feet >divided by tire circumference >hour x 360 = feet per second

>>	Anonymous Sat Nov 17 21:49:27 2018 No.1499233 >>1499219 speedometer

Anonymous Sat Nov 17 23:36:58 2018 No.1499276
File: 960 KB, 1920x1080, 82586D67-C85D-41F6-8123-6756279E0C7C.png [View same] [iqdb] [saucenao] [google]

I see an interface like this that is common in movies, TV and games.

Would a setup like this work best with a Raspberry pi controlling multiple Arduinos for each piece of hardware?

For example if I was making a starship would the oxygen system be controlled by a simple arduino surrounded by radiation protection and cooling?

>>	Anonymous Sun Nov 18 00:25:27 2018 No.1499287 >>1499276 >Is everything on a spaceship controlled by Arduinos No nigga what the fuck are you even on?

Anonymous Sun Nov 18 06:11:41 2018 No.1499413

>>1499287
>arduino micorcontroller is captured alien space technology from the Roswell crash in 1947
took 75 years to get it released to the public thanks to the hard work of people like like David Icke, Richard Hoagland and Whitley Streiber, god bless them. Brave heroes uncovered govt hidden secrets and lies

Anonymous Sun Nov 18 06:32:17 2018 No.1499420

>>1499276
Arduino is a layer of absolute aids bullshit software abstraction on a microcontroller.
It would never be used for anything by anyone who knows anything because it hinders development and features of the bare metal.
A space vehicle probably would use a robust version of a microcontroller or fpga to control each subsystem however multiple systems on a single chip, if it makes sense, isn't an issue. systems can go down individually if it relies on input from a sensor that goes down, the controller doesn't have to go down to fail a system.
If you take cars as an example you see how we believe is a safe and robust way to do things, ecu to control the engine and then over the years extra computers from obvious things like ABS, central locking/alarm and increasingly to "why the fuck is that a computer" like fog lights or indicators. they all communicate typically through canbus which is interesting in itself because (like all half driven systems(what is the technical term fuck?!)) it has an inbuilt EFFICIENT message priority system where one message in a collision always makes it through.

The most simple system in your scenario is the ""controller"" because all it does is monitor, ironically it probably takes 99% of the system to display the results on a fucking monitor vs actually gather the info from other systems.

Anonymous Sun Nov 18 06:58:07 2018 No.1499437

>>1483200

could this read help you beeing less crabby ?
https://en.wikipedia.org/wiki/Serendipity

>>1483190
For OP, if you're into music, hooking up an old 50-100$ pedalboard to a midi interface with the Arduino is like 5 to 10 times cheaper than store bought depending on pedalboard size. I'm having a lot of fun with this shit.
https://www.youtube.com/watch?v=L3OPF95EJMU

>>	Anonymous Sun Nov 18 11:11:24 2018 No.1499514 >>1499420 Wouldn't it be more cost effective to put an arduino in radiation shielding, rather than build a hardened microcontroller?

Anonymous Sun Nov 18 11:23:07 2018 No.1499519

>>1499514
You’re missing the point. The arduino IDE and the way it operates as a controller is the problem. Get something that runs python or find/build a purpose-designed controller so you can get away from the IDE. Actual aerospace process controls work more like PLCs than Arduino.

>>	Anonymous Sun Nov 18 11:41:27 2018 No.1499536 >>1499519 Okay let me rephrase the question. Is it better to put your favorite microcontroller in radiation shielding than to buy an extremely expensive radiation hardened one?

>>	Anonymous Sun Nov 18 12:17:10 2018 No.1499568 File: 121 KB, 756x567, light.jpg [View same] [iqdb] [saucenao] [google] >Built a night light. >Wiring circuit was kind of tricky but I got 'er done. sips

>>	Anonymous Sun Nov 18 12:34:18 2018 No.1499580 >>1499536 I mean.... http://fwfmedicalproducts.com/lead-sheeting-0-8mm-1-32nd-roll/?gclid=EAIaIQobChMIhd735bze3gIVCf_jBx3kUwHREAQYCCABEgKGafD_BwE

>>	Anonymous Sun Nov 18 12:45:14 2018 No.1499589 File: 25 KB, 334x328, ciggy.png [View same] [iqdb] [saucenao] [google] >>1499568 very nice, anon.

Anonymous Sun Nov 18 12:52:36 2018 No.1499597

>>1499232
>>1499233
Thanks for the help but what I need is to track the speed of each tire as the vehicle brakes. When wheel bearings wear out on my truck the antilock break kicks in. The thing is, if only one bearing is going bad it triggers the whole system on all of the wheels. Then it’s the guessing game about what bearing is setting it off. It’s a pain. The mechanic has a machine that’ll do exactly what I want to make, it tracks the speed of each wheel while braking and they can use it to isolate the problem bearing. I’d rather not buy the unit because, like most other automotive electronic diagnostic equipment, it’s horrenously expensive and is only used for one thing. Tracking wheel speed. I figured I’d make one myself to keep my hands busy during winter. A better question to ask would be what sensor(s) would I need for this and can I make them connect with Bluetooth to eliminate the hastle of wires?

>>	Anonymous Sun Nov 18 13:13:01 2018 No.1499613 >>1499597 Maybe you could use the existing abs sensors. I think they're proximity sensors that detect a kinda "toothed" ring on the hub. Wouldn't need to figure speed, just know when one is a lower frequency than the others.

Anonymous Sun Nov 18 13:40:02 2018 No.1499637

>>1499613
this could work. if you can tap into the signal. (you'd have to trace the sensoroutput/wiring harness to find the right wire)
i think its some kind of analog signal

otherwise. to make your own sensor array, mount your own sensors on the wheels, send the signals to a data logger that converts said signals to tire rotation speed.

you could use a detector/emitter pair, or proximity sensor or a hall effect sensor?
set it up to get a sensor output pulse once per tire revolution

Anonymous Sun Nov 18 14:13:14 2018 No.1499671

>>1499597
Although the abs trick will identify the problem bearing you're retarded in thinking you should just replace the bad one. Do both sides and worry not. A manual inspection of the bearing will tell you which one is which it's just labour intensive.

You probably have hubs instead of bearings, making it mega expensive, but I can tell you if one is going, the other isn't far behind. Of course it will fail when u need it most.

>>	Anonymous Sun Nov 18 16:50:16 2018 No.1499759 >>1499597 just replace all of them, it's like $15/wheel and it'll be less labor than rigging all of this up.

Anonymous Sun Nov 18 17:38:14 2018 No.1499800
File: 10 KB, 480x360, hqdefault.jpg [View same] [iqdb] [saucenao] [google]

How do I turn my arduino into a real-time current/power meter for 230 V AC current?

Do I need a fancy "module", or is it possible to translate a signal from a wire wrapped around the lead a few times?

Anonymous Sun Nov 18 19:38:26 2018 No.1499844

>>1499800
For voltage you could “technically” use a voltage divider with nothing but resistors. For current you can use a shunt resistor and measure voltage drop across that. That’s probably the most straight-forward way for a DIYer. Sketchy as diff though and that only gives you apparent power which is like 30% of the equation.

>>	Anonymous Sun Nov 18 19:58:21 2018 No.1499853 >>1486259 I used a RPi to implement a RFID front door lock. Much easier than getting keys out, just swipe my wallet or phone and the door is unlocked.

Anonymous Sun Nov 18 23:07:12 2018 No.1499952
File: 51 KB, 1772x589, Icantchannelmyautism.png [View same] [iqdb] [saucenao] [google]

>>1499853
Speaking of rpi, im about to consider buying two yardstick ones, and another rpi just so I can make my own version of rolljam....

But none the less, lets see if someone can help me with radio frequency.

So I ordered these off of amazon, theyre transmitter/receiver at 315mhz (which they do work at that frequency according to SDR#)
>https://www.amazon.com/gp/product/B07415XCSD/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

I went off of samy kamkar digital ding dong here.
>https://github.com/samyk/dingdong

to write my code. Also I was being autistic with the code, it use to be cleaner but my autism kept going crazy on me.

>https://pastebin.com/gGtKfA0G

Hardware I used is a arduino uno.

Pic related is two signals. Top is he original signal from the doorbell, bottom is the signal from my arduino.

Some how its leaving a huge gap in between certain signals. Earlier I cut up the noise just to compare in audacity, and my signals "bit period" as I call are near identical if anything its .0001 off which for a cheap doorbell, im sure it wouldn't make a difference.

I can barely find any documentation or any good info about these receiver/transmitters.

Is there anything I can do to fix this or what can I do? Any libraries would help with this that actually work with transmitter/receiver?

Anonymous Sun Nov 18 23:18:32 2018 No.1499958

>>1499952
I forgot to mention.. Not sure if this makes a difference.. but the three times I get those huge gaps in my signal, I noticed my
>delaymicroseconds(us - last - bitperiod[lowdelay]);
Spits out -150, three times... Could that be the cause of it?

Anonymous Sun Nov 18 23:41:02 2018 No.1499968

>>1499952
Ok I figured it out, it was the negative values of -150 I was returning. I went into audacity, and checked the delay inbetween where the signal was stretched, and all came to 320us, and added this in and now I can ring my doorbell.

if (i != 0 && ushur - lasthur - bit_periodone[lowdelay] != -150){ delayMicroseconds(ushur - lasthur - bit_periodone[lowdelay]); }else if (ushur - lasthur - bit_period[lowdelay] == -150){ delayMicroseconds(320); }

>>	Anonymous Sun Nov 18 23:44:44 2018 No.1499970 >>1485088 Nice clock, Ahmed.

>>	Anonymous Mon Nov 19 10:20:36 2018 No.1500173 >>1483323 What's the point when she's already there?

>>	Anonymous Mon Nov 19 10:58:09 2018 No.1500188 >>1500173 So that his mom can get notifications when she's doing laundry, shopping for groceries and such.

>>	Anonymous Mon Nov 19 13:03:52 2018 No.1500239 >>1494869 Am I your dad? Cause this is exactly what I did.

>>	Anonymous Mon Nov 19 14:34:13 2018 No.1500297 >>1486601 >Such a clever design. wrong. after a few thousands (possibly few hundreds) uses, the flexitube fails.

Anonymous Mon Nov 19 15:25:29 2018 No.1500330
File: 295 KB, 550x733, Splash2.jpg [View same] [iqdb] [saucenao] [google]

I accidentally bought a lot of 50V-3A rated diodes in a fair. Since every diode brings down voltage by 0.7V, I'm planning to build some insane bridge/divider.

>>1491935
fake and gay.
you wronged the erroneously wrong wrongest part about resetting linestart +0x80 every 20 characters.

>>1494869
noice.
pics or it never happened

>>1494961
because they are just attentionwhoring.
also, they're mostly gay.

>>1495713
a while ago I spent an insane 150 bucks for a canbus-to-usb converter for a car bought in 2006.
no fuckin way to use canbus. the only working thing was the obd-ii interface. wtf.
(yes, I tried adapters and resistors between can+ and can-, no luck)

>>1496358
top kek.
leave it out to the usual sparkfun & adafruit

>>1497469
I used UDP packets because Sockets Suckets and I don't want stale requests floating around. Self-contained, 504 bytes safe payload, instant shipping, no need for connections "hurr durr GET POST reee". My first 4 bytes in the packet are contain a request serial number so I can send it many times until it gets an actual reply. Android side you will have to add some JNI C++ function to manage UDP data.

>>1498367
I'm still searching for a sulphur sensor because I read that farts and poo smell depends on the sulphur gases. It would be nice to have a large display in the bathroom: meet the "EWW MONITOR" - "your last fart sent my sensor off the charts!"

>>1499219
a cheap OBD-II interface.
basically you'll give AT commands on a 9600 baud serial port.

>>1499420
space things use a 200 MHz MIPS-like processor because it's currently the only thing that is radiation hardened, low temperature resistant, and seriously field tested.
yet a single bit failing somewhere in a super-verified-hardened-thing renders a 15-years space mission a huge fail.

>>1499800
you need one of those AC sensors that output a 0-to-5V value you can AnalogRead.
Performance will be ugly: 1024 levels means if you top to 5 kilowatts you will have a 5 watts resolution.

>>	Anonymous Mon Nov 19 17:51:49 2018 No.1500414 File: 50 KB, 264x246, 1355149289140.jpg [View same] [iqdb] [saucenao] [google] >>1500239 DAAaaaaAAD! Get off of 4chan! You're embarrassing me!

Anonymous Mon Nov 19 19:09:02 2018 No.1500448

>>1499536
Weight is an issue for space applications, so better to use a radiation hardened device than encasing something in lead or a steel box or something like that. You could maybe use the weight saved to put an extra sensor package or two in orbit instead.

Anonymous Mon Nov 19 19:12:34 2018 No.1500458

>>1499637
>this could work. if you can tap into the signal. (you'd have to trace the sensoroutput/wiring harness to find the right wire)
>i think its some kind of analog signal
Maybe it's already available on the CAN bus in your vehicle, you'd have to work out how to do packet sniffing to figure out what data is being sent though and filter it out from everything else being sent.

Anonymous Mon Nov 19 19:26:23 2018 No.1500471

>>1499613
>>1499637
Good places to start thanks guys
>>1499671
When I have 1 bad bearing I just replace them all. It takes 5minutes per with the press to take it all off and put it back on. I’m trying to figure out if there’s a consistency of which bearing wears more. If there’s a pattern I’d like to figure out why. I’ve driven on a bad bearing for hundreads of miles. It’ll still roll if the bearing craps out while I’m driving. I’m just making a hobby project around that involves my mechanical knowledge and helps me expand into coding/electrical. I’m not going to say it’s a practical application but I’ll learn along the way and have something to do besides playing with my dick all winter.

>>	Anonymous Mon Nov 19 19:34:44 2018 No.1500474 File: 79 KB, 960x844, beans;D.jpg [View same] [iqdb] [saucenao] [google] >>1500471 >something to do besides playing with my dick all winter. >doing things other than playing with your benis weirdo

>>	Anonymous Mon Nov 19 19:45:31 2018 No.1500480 >>1500471 generally, the sensor array and wiring would be fairly simple. the actual placement and mounting of the sensors to your wheels would be the main challenge of course

Anonymous Tue Nov 20 19:03:06 2018 No.1501088

>>1500480
That’s where I’m wondering if it’ll be easier to use the obd and find it through the code, or to figure out how to set the sensors and run wires to collect somewhat usable data. I’d rather not monkey around too much with the truck itself. If I want to use the obd I might as well just use a laptop to read everything, right? Is this still a good project or should I just make a backup sensor with lights that guide me back to hooking up to trailers?

>>	Anonymous Tue Nov 20 23:23:26 2018 No.1501195 >>1500448 >Weight is an issue for space applications Yes, but what if wasn't as much. Thinking more of building a cost effective ship.

>>	Anonymous Wed Nov 21 12:49:53 2018 No.1501450 >>1486619 >He doesn't introduce sdm resistors and capacitors in his dick for charged cum

Anonymous Thu Nov 22 22:39:30 2018 No.1502559
File: 242 KB, 1008x756, gps.jpg [View same] [iqdb] [saucenao] [google]

okay got some sensor data displayed.
think i might have fried my .96 oled so back to the 20x4 LCD

question is- How to force the output to display leading zeroes on a two digit number?

for hrs, min, & secs, for example, when they are less than 10, i need them to display as a "03" instead of a "3"

>>	Anonymous Fri Nov 23 01:01:51 2018 No.1502620 >>1502559 if(min<10) Serial.print("0"); Serial.print(min);

>>	Anonymous Fri Nov 23 01:14:59 2018 No.1502623 >>1485088 What kind of turtle purse is that?

>>	Kevin Van Dam !ZNBx60Gj/k Fri Nov 23 01:59:45 2018 No.1502632 >>1494961 >tfw this is like 80% of why I don’t have an engineering degree If only there were more Latina baristas trying to become engineers, I could’ve learned something.

>>	Anonymous Fri Nov 23 06:34:24 2018 No.1502748 File: 45 KB, 524x731, min.png [View same] [iqdb] [saucenao] [google] >>1502620 i get an error. >'min' was not declared in this scope

Anonymous Fri Nov 23 06:57:17 2018 No.1502752
File: 61 KB, 664x435, Screenshot_2018-11-23_06-56-30.png [View same] [iqdb] [saucenao] [google]

>>1502559
>question is- How to force the output to display leading zeroes on a two digit number?

use sprintf to create a string. see printf doc to learn how to format the string.

pic related has an example like you need

>>	Anonymous Fri Nov 23 07:59:21 2018 No.1502761 >>1502748 Since you're using gps.time.minute() to get minutes, (assuming commented out code works) Just insert >if (gps.time.minute()<10) lcd.print("0"); before >lcd.print(gps.time.minute());

>>	Anonymous Fri Nov 23 08:52:26 2018 No.1502771 >>1502752 apparently i'm too dumb to understand this string stuff right now. but thanks though, i'll have to study and experiment with it for a while

>>	Anonymous Fri Nov 23 09:10:02 2018 No.1502777 File: 192 KB, 1008x756, zeroes.jpg [View same] [iqdb] [saucenao] [google] >>1502761 that worked!! thank you anon.

>>	Anonymous Sat Nov 24 04:57:40 2018 No.1503277 >>1502771 learning string formatting pays off rather well

Anonymous Mon Nov 26 14:42:39 2018 No.1504538
File: 253 KB, 738x1312, Yay.jpg [View same] [iqdb] [saucenao] [google]

>>1484630
I dunno, I just got my arduino and was poking around and shift registers came up. They seemed useful so I got a couple. I've since got a handful more of ICs for driving LEDs and displays and stuff but I had a lot of fun with shift registers and I'm glad I know how they work now.

Anonymous Mon Nov 26 15:06:04 2018 No.1504551
File: 80 KB, 540x720, 1530124064771.jpg [View same] [iqdb] [saucenao] [google]

>Collecting a bunch of bits and bobs
>Buttons, switches, lights, just all kinds of goofy things
>tfw plan on building a useless panel or box that's just covered in said switches, buttons, and lights for my niece

Won't do shit. Flicking switches, blinking lights, maybe a buzzer on it so my sister will hate me. It'll be fun though.

>>	Anonymous Mon Nov 26 15:13:56 2018 No.1504558 >>1499568 Frost that jar. Build a joule thief so it runs on dead batteries.

>>	Anonymous Mon Nov 26 17:44:29 2018 No.1504626 i wanna make some prosthetics like this ones https://openbionics.com/hero-arm/ for people in my third world country but sensors are expensive as fuck. feels bad man.

>>	Anonymous Tue Nov 27 02:52:30 2018 No.1504813 >>1504538 >They seemed useful so I got a couple Mate I've got 50 164s and 50 595s, you can never have enough.

>>	Anonymous Tue Nov 27 02:52:32 2018 No.1504814 >>1498424 >an Arduino just for a light sensor Jesus Christ. Not everything needs a mircocontroller.

>>	Anonymous Tue Nov 27 02:55:55 2018 No.1504816 >>1497880 One possible solution: a photoresistor in a wheatstone bridge, going to an opamp. If the opamp can't power the light directly, have it bias a transistor to power it.

>>	Anonymous Tue Nov 27 03:16:14 2018 No.1504824 >>1498424 Don't just coat this in silicone. That's just asking for it to become a chew toy. One that will break apart and be swallowed.

Anonymous Tue Nov 27 05:41:33 2018 No.1504871

>>1504538
Now that you know how those work, a good project is building/coding an EEPROM programmer so next time you want a whole fuckton of logic outputs you can just plop your chip into a premade breadboard, doodle a couple lines, and you’re done. Seriously, EEPROM can do everything your shift register does, but better and faster. If nothing else, making the programmer is fun.

Anonymous Tue Nov 27 07:17:44 2018 No.1504913

>>1504871
>Seriously, EEPROM can do everything your shift register does, but better and faster. If nothing else, making the programmer is fun.

Take an example like his 4 digit display up there, which will need 32 logic inputs. Using the 595 shift register, I can drive this display using 3 logic outputs and 4 daisy chained 595s.

What EEPROM would you recommend to do this better and faster, and how many logic outputs are needed to control the EEPROMs? I'd love to get away from the 595 shift register if it's as inferior as you say, and when you say "faster", are you referring to development or actual operating speed.

Anonymous Tue Nov 27 16:56:57 2018 No.1505175
File: 62 KB, 540x831, IMG_20181127_224755.jpg [View same] [iqdb] [saucenao] [google]

>>1496358
Hey, anon! Try to order from somewhere else, if factory MOQ doesn't suit your evaluational use case? Although, I always got engineering samples on request, but that may have changed over the last decade.

Anonymous Tue Nov 27 17:40:15 2018 No.1505193
File: 13 KB, 350x192, 350px-Gas_chromatograph.png [View same] [iqdb] [saucenao] [google]

>>1500330
.>I'm still searching for a sulphur sensor because I read that farts and poo smell depends on the sulphur gases.

Hey anon! My first thought was a diy way to "gas chromatography". On asking Google about it, I was informed about a diy-gas-chromatograph.html on a blogspot by nerdytoad. Does it look viable to you?

>>	Anonymous Tue Nov 27 17:43:50 2018 No.1505195 File: 801 KB, 3000x1989, my_wife_spoils_her_son.jpg [View same] [iqdb] [saucenao] [google] >>1505193 >farts and poo smell

Anonymous Tue Nov 27 18:34:53 2018 No.1505212

Arduino Questions:

(Sketch programming related, i think.)

Let's say i plan to build a handheld device, maybe about 4" wide, 8" long, 2" thick ( approx guess), using an arduino, with 3 or 4 onboard I2C sensors, like precise timer, temp, altitude, pressure, speed & direction and lcd or oled display, maybe multiple displays with an array of buttons, switchs to control, select various outputs to display.

So lets say i want to be able to take the various sensor data and have the arduino sketch calculate different things from it, or make it selectable to display in different units, with maybe push buttons, toggle buttons, or rotary encoder switch,

i presume i would need a bunch of "if/and/or/else/when" statements in the Sketch in order to make it calculate, convert. display different things based on my input? and a whole bunch of functions which include the data conversion calculation commands?

does this sound like the right approach? i feel i'm almost getting into PLC territory. but still the idea is probly more than simple enough for the Arduino to handle. just alot of programming. i'm guessing.

what do ya think?

Anonymous Wed Nov 28 07:36:38 2018 No.1505380
File: 959 KB, 1284x1650, WLCZaIA.jpg [View same] [iqdb] [saucenao] [google]

>>1505212
>i presume i would need a bunch of "if/and/or/else/when" statements in the Sketch

yes. and just stop where you are, and do one thing at a time. first, get the display to work. then use one button to learn how to do "if/and/or/else/when" programming.

then add one sensor and develop a good display for it.

repeat until you are done. Pic related is an AVR (the chip in Arduino) project where I started small and eventually went crazy with sensors to measure lots of things on an old truck. At one point I was sending the data to an Android tablet via bluetooth to plot things like engine temperature vs. time, but then I realized I had gone overboard.

>>	Anonymous Wed Nov 28 07:46:49 2018 No.1505384 >>1505380 >but then I realized I had gone overboard. Nah, overboard is an upload to a cloud instanced that lets people see a dashboard of your EGT and timing advance. Go nuts anon.

Anonymous Wed Nov 28 12:05:55 2018 No.1505472

>>1505380
The only issue with that image is that you haven't cleaned it up, moved it to a PCB, and kept going. You're basically just beginning to eek out what would be considered useful data for a system like that.

>>1505212
This shouldn't be that much programming, but details are a little thin in your post. Just go for it and you'll find out about how much work it is.

Anonymous Wed Nov 28 12:37:23 2018 No.1505491

>>1505472
>The only issue with that image is that you haven't cleaned it up, moved it to a PCB, and kept going. You're basically just beginning to eek out what would be considered useful data for a system like that.

I only made two, one to be in the truck while I play with the other one. And I've eeked about enough: water temperature with over-temp alarm, trans fluid temperature with over-temp alarm, low oil pressure alarm, left headlights on with ign off alarm, mph, tachometer, total miles, trip miles, total miles since last fillup (enter gallons and it displays miles/gallon). that's a lot of eek to me.

the board layout is comically bad because it started with 3 7-segment digits and I realized I needed 4. the other board looks less retarded.

>>	Anonymous Wed Nov 28 12:44:27 2018 No.1505496 new thread >>1505495 new thread >>1505495 new thread >>1505495

>>	Anonymous Thu Nov 29 12:30:52 2018 No.1506085 >>1505175 yeah ill look into that

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