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geekhack Community => Keyboards => Topic started by: lsh on Wed, 09 September 2015, 18:47:36

Title: PS/2 -> USB adapters with reasonable logic
Post by: lsh on Wed, 09 September 2015, 18:47:36

Today, I wrote a little script to blink my Scroll Lock light if I have an incoming message that I'd consider critical.

Today, I learned that the cheapass PS/2->USB converters I bought at the salvage shop for $1 each completely reset the keyboard state (i.e. send a break for every key) when the state of an LED changes.

Does anyone know of a brand/model of adapter that doesn't do this? Are Soarer's adapters okay with this? I'm sure I could get a teensy and fix the logic if need be, but I'm impatient and would rather just buy something.

(quick test if you're curious and running linux: open a terminal and run the command:
while true; do xset led 3; sleep 0.5; xset -led 3; sleep 0.5; done
Then try typing, performing chords, etc. Kill the terminal to stop the madness.)

Thanks folks!

Title: Re: PS/2 -> USB adapters with reasonable logic
Post by: jerue on Wed, 09 September 2015, 19:51:51

Interesting. Your keyboard probably is requiring too much power, do you know if you have an active PS/2 adapter?

You'd probably want something like this: Monoprice PS/2 Adapter (http://www.monoprice.com/product?p_id=10934). I have had no trouble with my IBM keyboards using this adapter. Soarer's would definitely work although they are a bit more expensive.