Raspberry PI RP2040 USB Keyboard interface

[Spanno]

This is a bit Heath Robinson, it uses a $10 QTPY RP2040 (the larger Raspberry Pi Pico should also work) and allows me to use my wireless USB keyboard with my Ataris:

 

 

Write up, KiCad files, schematics, gerbers and BOM are here: https://github.com/dpicken/atari-hw/blob/main/doc/keyboard-usb-qtpy.md

Source code for the firmware is here: https://github.com/dpicken/atari-fw

[TGB1718]

Nice project, I did a USB keyboard some time ago that use an Arduino Uno (RP2040 not available then).

Mine is external and uses joystick port 2 to connect the keyboard, obviously mine can't do START/SELECT/OPTION