Picture of computer controled stuff
This instructable will guide you through making a computer controlled low voltage device.

What you will need:
1 a old ps/2 or sub keyboard
2 some low voltage relays
3 some wire

Optional stuff
1 a nice box/case
2 dip socket
3 solder
4 led

soldering iron
screwdriver which fits in the screws in your keyboard
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Step 1: Opening the keybord

Picture of opening the keybord
Take your screwdriver and unscrew all the screws in your keybord. Look under stikers and those little rubber feet for more screws.
open your keybord.
throw away the white plastic sheets but keep the sercet bord

Step 2: Using the keybord cercit

Picture of using the keybord cercit
Ether wrap wires around the led pins or desolder the leds and solder wire insted. Then add hot glue tape to keep the wires in place. Dont make the wires too long. now strip the ends of the wires. there shood be 3 pairs of red and black wires. 1 for each led.

Step 3: Wireing the relay

Picture of wireing the relay
get your relay and wire it to keyboard as shown.
use tape on connections and-after you have tested it, on all exposed conductive material and to secure the relay.

Step 4: Prepareing your box [optinal]

get your box and drill 3 holes in it. 1 on one side and 2 on another. if you do this, cut your usb cable near the plug then thred the end of the cable at the keybord through the hole then reeatach the cable by striping the cut ends and linking each couler back togeter again.
in the other to holes, put the led in one and thred the wires through the other.
then screwthe box together again.

Step 5: Testing

Picture of testing
first get a program like controlermate for mac or silamaler for pc and set it up so wen you press some unused buttons on your keybord the keybord in the cercit lights its leds.
then make the cercit in the picture. now press the buttons you assined on the computer. if the led lights up woo! if not, check led being the right way round, battreys having power, and that all conections are conectid correctley and that nothing is touching that shoudent be.
ndjalva5 years ago
 Please use spell-check............
Derin6 years ago
spellcheck helps
allenmt Derin5 years ago
very true mate :}
Derin allenmt5 years ago
smuteimes ti eosdnt
i dont understand your engrish, what is this for?
engrish, and he has bad grammer! Thats rude!
geeklord6 years ago
trun the bendy circiut board thing into a wallet, theres an instructable for it
jafo6 years ago
The"silamaler" for pc just means some program "similar" to controlmate for Mac.
the program you want for the PC is "uberOptions" and can be found here.
I hope this helps you.
The relay is nothing more than a switch for power to the LED's found in the keyboard as well. It appears that he is wiring the LED's in parallel. From what I think I'm reading, it appears to me that he is using the 5 volts from the USB port. If that's true then I would use a resistor in the + line ahead of the LED's because the USB port is only good for 500 ma, I think. Without a resistor any problem with the LED's could overload the USB circuits.
newbeatle6 years ago
hi, maybe a seems like an idiot but.... can you describe with an more detailed schemtic how this think works? it seems to me that you atach an relay instead of the leds of the keyboard ? and other question, can you put a link to get the program that you say? (silamaler) . i seek for it but i just came here to the instructables again!!! thnks from saltillo coahuila mexico , el ing. Alex
lol keybord that sounds like something that could be Korg's ( the electric piano company) next model. lol or the Keyborg hahaha
munchman7 years ago
You need to use the macro setting on your camera. Besides that (and the spelling) pretty good instructable.
You do know you can use the spell check that comes with instructables and firefox.
Bor7 years ago
Darkshot is requested pleasantly to shut his face, nice instructable!
uguy7 years ago
Unbelievably bad execution of a nice instructable idea. It's hard to take someone seriously who spells this badly (or carelessly).
acaz937 years ago
Key = Assigned Button to A , B C 123 Etc .
Board=Part With Electronic traces Oftenly made from copper
Useful instructable , Though

brodyf7 years ago
Holy cow! It was decent in its own right, but you should really proofread your instructables. The blame is not entirely yours though. I also hold whomever reviewed it responsible.
gamer7 years ago
sercet, cercit, joind, realy, prepareing, thred, reeatach, couler, togeter, screwthe, assined, conectid, correctley, shoudent... Did you read over your work? 'Cause it is full of spelling and grammar errors... One time reading over it could have fixed that. circuit, joined, relay, preparing, thread, reattach, colour\color, together, screw the, assigned, connected, correctly, shouldn't...are the right words. Nice Instructable, though.
Cool. Looks a little rushed but other wise very nice.