Ideas for Parallel port cables

[me !!UlwKxZOo7lL No.770529]

so i got my hands on a bunch of old parallel printer cables, about 12 of them

one is a usb to parallel female

im looking for ideas to make with those cables..

i sorta started a poor man's controller
but dint finish

it was a interpreter for a domain specific language
where you can switch on and of any of the bits
of the controller and some other ops like shift and
invert, oh linux only btw

im a pro programmer

eletro/eletronic/RF/hidraulic hacker

and a chemics lover

have lots of tools and time

any cool ideias to turn these cables into??

btw rate my shack

[Anonymous No.770539]

https://www.youtube.com/watch?v=8YEdHjGMeho make a cookie maker and create your perfect cookie.

[me !!UlwKxZOo7lL No.770548]

>>770539
amazing machine, but its kinda showing off your engineering cock

[Anonymous No.770553]

I was going to use an old computer to control a programmable, fully-automatic film developing machine via the parallel port.

Needless to say, it was a way too ambitious project and never got finished.

[me !!UlwKxZOo7lL No.770559]

>>770553
hey this is actually a nice ideia
and very feasible, hard but feasible

wot ur skills?

i got interested in a partnership

[me !!UlwKxZOo7lL No.770563]

>>770553
btw, my brother is a photographer so he would love one of those

[me !!UlwKxZOo7lL No.770633]

>>770529
i shouldnt but.... bumpity bump

[Anonymous No.770892]

oh yes...

[Anonymous No.770914]

>>770529
make a covox speech thing (also called a covox plug)
schematics are easy to find.
compatible with many DOS games.

[me !!UlwKxZOo7lL No.770930]

>>770914
awesome idea anon!
seems very simple
ty, gonna make it right away

[Anonymous No.770933]

>usb to parallel female
i tried to use one of those as an interface to a a-d converter. turns out the usb ones don't pass data back like the original parallel port. tried diferent ones with the same result. had to scrape the idea and go with a usb serial cable (since that is bidirectional).

[me !!UlwKxZOo7lL No.770938]

>>770933
why didn u simply use the parallel?
u dont have an old computer?

ty for the advice btw

maybe was the converter IC that lacked the reversing
mine has an the pics IC, dind look at the datasheet yet

IC: PL-2305H

[me !!UlwKxZOo7lL No.770939]

this... pic

[Anonymous No.770954]

>>770548
He's pretty shit at making winforms though.

[me !!UlwKxZOo7lL No.770957]

>>770954
we coders call it "enginner code" and "engineer interfaces"

check this to have a taste
http://www.lingscars.com/

[Anonymous No.771244]

>>770529
Maybe use one for a snes/LPT adaptor?

www.raphnet.net/electronique/snes_adaptor/snes_adaptor_en.php

[Anonymous No.771432]

>>770529
Creating a low budget PLC with a discarded laptop and some relays is very simple via the LPT interface.

Laptop -> USB adapter (since most laptops don't have par port) -> Cable -> Control circuit -> Relays

Pic related, it's a relay board i used when i did this eons ago.

The green text translates to "Fucking diodes", and is a reference to the fact that i forgot to draw in diodes to loopback around the relays to protect the transistors.

The IC is a 74SL373, if my memory serves me right. It basically turns each relay channel into a latch, so that a relay will stay on even if you unplug the laptop.

[Anonymous No.771434]

>>771432
pic of the semi-finished product and me working on it.

Yes, it looks like shit, because:
- It was intended to look like junk, because of reasons
- It was all mounted on a wooden board we found outside, drenched in mud.
- The metal blob to the lower left of the assembly was a DIY heatsink, severly oversized, "In case the voltage regulator generates noticable heat, plus it looks shitty".

That + laptop + a Freesbie CD + some perl hacking = a very basic PLC, used as a central piece in a larger project: DIY automated vacuum cleaner.

[Anonymous No.771435]

>>771432
I forgot to note that it works fine without that IC, but it's convenient to have so that the parport isn't driving the transistors directly. And ofcourse, the latching effect.

[Anonymous No.771437]

>>771432
>>771435
A couple of other things i should mention:

The transistors are BC547. Google will tell you of todays equivalent. It's the one that "everyone" uses for "everything".

IC1 is a voltage regulator, since the 12V source was actually a car battery

The relays where whatever we could find cheaply that could switch 12V with a 5V driving voltage.

Not sure about the resistors, but the number 300 comes to mind. milli ohms?

[Anonymous No.771603]

>>770930
Yay! Let me know when you did it, and how does it sound.