Posted by sailplane on
URL: https://www.es-forum.com/DIY-alternative-3-in-1-low-EMF-computer-Mouse-Keyboard-Microphone-tp4030078p4030081.html

You should be able to get a IR keyboard with no problems.

If you worry about compatibility, check this out,
https://flirc.tv/flirc-usb

it is a IR Receiver that can be programmer to any IR device. I've never tried it, but it looks like it should do the job.

So you can just buy the keyboard, and program it to this IR reciever, which is pretty new, it's intended for home theater PCs.

I'd recommend trying something already done, as it's a lot of work to make your own.. if you make it, you may as well try to sell it once it's done and hope to get your money back.. maybe others would be interested in a light/operated keyboard.