/diy/ - Do It Yourself

>>2690665
>>2690635
>>2690625
>>2690546
>>2690448
also here's the definitive shape

>>2690670
thought and talked about it with the head of the comms department but we arrived at the conclusion that there might be resonances that would make it unusable for our purpose, also factoring that making an among us character wasnt nearly a priority when initially designing i just saw that it would be possible tomorrow morning lol

>>2690546
>>2690665
the PCB is yet just a binary Altium PCB file, once i finish with the PD connections it'll be sent for manufacturing since the simulations show acceptable performance
>>2690612
i just showed a tiny glimpse of the PCB footprint not even the schematic. It doesnt say shit, you dont know the components, the purpose or whatever and im not even going to show you anything else other than the crewmate itself. Also I work for a spinoff of my university (also showed an advisor the post and he just said that i need help but its funny).
>>2690637
Who said i was the first person to do this? Only you, retard. I just thought that it would be a funny challenge to make an actual good RF PCB with some goofy design and i just decided to share the process and the following bureaucratic shenanigans (this will be the last post where you can see something of the PCB design files because it is finished)
>>2690664
imo the silly acronyms are the best part of the design process. The system engineers may call us childish but honestly after suffering throughout bachelor we all just wanna have a little fun with our degree

reference photo on how the creature is going

The title is actually real. I work in a CubeSat research group and on a subsystem I was tasked to design I'm going to place the components and traces so it resembles a crewmate from the hit game Among Us. The project will be named AMOGUS (an acronym for the subsystem functionalities cant say a lot due to obvious NDA).
Also you might not be wondering (or might be idk), why in the actual ever loving fuck would you do something like that? To that I say, life is too short for just sticking to predetermined paths and dogmas, how about we do a little detour? It might be not the optimal way, but it'll be the scenic one thats for sure.

Will try to keep this updated no matter the situation

>>1214878
>Have fun with your hysteresis.
Laminations do nothing about hysteresis. This is a fundamental property of the substance. They are there to reduce eddy current losses. And my point was that this impregnation process is likely to have its own problems that would be equivalent to iron losses in severity.

>>1214329
>making an electric motor stronger?
What type of electric motor? Different motors may need different things.

>>1214765
>Can you 3D print silicon steel?
Possibly but I would worry about the surface finish. Proper laminations have a coating on them for a reason:
>Coating. Laminations punched from semiprocessed steel are uncoated, while those punched from fully processed sheet are typically coated at the steel mill with a core plate coating. This coating insulates laminations from each other to reduce interlamination eddy currents, protects the steel from rust, reduces contact between laminations from burrs,

>>1214833
>Plastic impregnated with carbonyl iron powder might actually work
Again might work but at that point I'm not sure the laminations are doing anything. You might as well make the stator a solid piece.

lol @ roleplay faggot

put it in the microwave for 28 seconds exactly AND NO MORE! Otherwise youll damage your clock!

>>1050531
This is homework isnt it -.-

>>1050171
2W seems way too weak for a light bulb. Normal house bulbs are rated at between 50-100 W.

>>1050168
You read a voltage, but cant get a light to work.

Either the light is broken or you dont have a voltage / current.

>>1050111
Oh you bought a lego set power supply.
>not building your own
Get good bruh

>>1049764
>>1049766
>>1049768

Dam that looks sexy. I believe thats a transformer (step down, hopefully) Or could it be a rectifier?

>>1048844
You definately want to go for the smaller ones. Big ones you may not have enough room to attach (one day)

>>1048753
Mate there is too much going on here.

Have you tried prodding the various points with a multimeter

>>1048733
What is that supposed to mean?

>>1048677
>I'll assume +battery refers to the potential at leftmost transistor's emitter and that the ground is motor's -.

Its connected to a high resistance line from the battery, so its a voltage of very small current, but enough to turn on the transistor.

>The leftmost transistor can't be turned on with +battery voltage.

it can its npn low base current.

>For the capacitor to do anything it has to be comically big.

Its gonna be a few super caps in parallel. Total of 1500 F, 2.5 volts (though il draw like 5-10W from it)

>You'll risk burning the capacitor charge transistor if you have no base resistor.

Yes I didnt include the resistor for the switches, but there will mostly certainly be some. I will use very tiny current to turn it on.

>Your current paths waste 3 diode drops.
which ones?

>>1048666
The cap supplies extra power to the motor for periods of up to 3 minutes. More power when going up hill.
Its just a theory that it will scale hills better with a temporary boost of power.

RE the wiring, it needs to be done that way when in use it cannot charge otherwise short circuit.

>>1048667
The charge controller draws a certain current, so its resistance is variable depending on the throttle. I just need the transistors to act as a switch.

The transistors are power transistors specced for this current and voltage they should be expecting.

>>1048654

Its for an electronic scooter. Any problems ?

>>1048507
Youre using a built in DAC. Was that output you showed my meant to be analogue?

>>869127
Do you know the power rating? With so few LED's my first guess is you won't need a fuse because you're working with so little current.

Link to previous thread:
https://archive.moe/diy/thread/859954/#865305

>I'm new to electronics, where do I get started?
There are several good books and YouTube channels that are commonly recommended for beginners and those wanting to learn more, many with advanced techniques. The best way to get involved in electronics is just to make stuff. Don't be afraid to get your hands dirty.

>Links to get started
http://pastebin.com/9UgLjyND