Guru
Joined: 24/12/2017
Location: AustraliaPosts: 1694
| Posted: 12:08am 18 Feb 2024 |
Using that circuit with no level shifter is adventurous. You will be feeding 5 volt signals into the pico. Not good.
The adapters on Amazon and others are meant for keyboards that can automatically switch between USB and PS2, there is no converter inside them little adapter plug. Keyboards that can do that often come with an adapter plug but they seem to be getting harder to find.
Bill