Slow typing is OK… but faster typing gets corrupted

[jrw35]

Hi. This project is great — thank you.

It works for me, but only if I type slowly. ‘One finger’ speed is OK.

When I type at normal speed, it starts generating control codes instead of letters. I think it registers more than one key and they get mixed up.

Do you have any suggestions, please?

Thanks in advance.

[No0ne]

Which motherboard and OS are you using?

[jrw35]

Thanks. It’s an old (2000) HP laptop running Windows XP.

[No0ne]

Dusted off my old Toshiba laptop and I can reproduce the problem. I'll come back to you when I have a fix for that.

[jrw35]

Amazing. Thanks. Let me know if I can help.

I will also find a newer computer with PS/2 to check if my circuit behaves differently with that.

[jrw35]

Hi again. Following up to say that I’ve tested this on a slightly newer desktop PC with a different keyboard and I had the same results. Just like before, it works perfectly at slow speeds but not if you type faster.

I’ve also rebuilt the circuit from scratch (the only parts that I reused are the Pico and the OTG adapter) but that hasn’t made any difference.

[No0ne]

Should be fixed in the latest 2.2 release!

[jrw35]

That's great -- well done and thank you very much for fixing. Looking forward to trying it out!

[jrw35]

Working perfectly. Thanks again!