USB keyboard VS terminal input speed


Author Message
Mixtel90

Guru

Joined: 05/10/2019
Location: United Kingdom
Posts: 9027
Posted: 12:13pm 05 May 2025      

USB is generally slower to decode, I think, but it's a lot more flexible. PS2 is using serial TTL which has a lot less software overhead.

Don't forget to include level shifting if your PS2 keyboard won't work from 3V3 (not all will). Failure to do so can occasionally  result in a dead Pico.
.
Edited 2025-05-05 22:15 by Mixtel90