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Mod keyboard to use usb power

post #1 of 20
Thread Starter 
batteries suck for wireless keyboard, got spare usb cable going to just solder it on but 5volts is too much, need it down to 3v to match batteries, what i need to reduce it down?

also do not post saying omg wireless keyboards suck, buy wired keyboard, this is funnier and this needs to do me a while til i save for a mechanical keyboard anyway
post #2 of 20
No easy option.
post #3 of 20
Thread Starter 
im only using it for power though, not for transmitting data, dont know how to reduce voltage down though
post #4 of 20
Have you got any electrical experience?
Just sayin'... i dont want you to burn your house down
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Fate/Zero
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post #5 of 20
Thread Starter 
yes i do know a moderate bit about eletrical stuff just never faced this question before
post #6 of 20
Quote:
Originally Posted by Rittzy View Post
im only using it for power though, not for transmitting data, dont know how to reduce voltage down though
There are three ways to do that.

1. DC-DC power supply. Pros: efficient and probably the most stable power. Cons: you'd need a custom-made PCB for it, and it would be expensive, and you'd need help from an electrical engineer.

2. Zener diode. Pros: relatively simple to add and fairly cheap. Cons: not very efficient, need an electrical engineer to help you find the correct diode to get the voltage right.

3. Resistor. Pros: cheap. Cons: inefficient as hell (since resistors are meant to limit current, not voltage), would need an electrical engineer to help you get it right, may not even be possible in this instance.
post #7 of 20
Thread Starter 
yea was looking at zener diodes, ill look about the net see what i can dig up! Cheers
post #8 of 20
So you want to convert a wireless keyboard into a wired keyboard?
Doesn't that negate the benefits you've listed for a wireless keyboard?

You could always get a K350. I only have to change the batteries every 6-8 months or so with heavy daily use..
http://www.newegg.com/Product/Produc...26076&Tpk=k350
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Waiting on X399
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post #9 of 20
Thread Starter 
lol yea it totally makes this the stupidiest thing ever but why not do it, keyboard batteries are annoying me and want to get mechanical keyboard next, saving up so just play about with this thing for now.

I really only do stuff like this for the fun plus why not lol
post #10 of 20
For all the time you would spend trying to turn your wireless keyboard into a wired keyboard, it might be better to just buy a wired keyboard and call it a day.
    
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