Arduino Connect RP2040 with an IO expander

A project log for ComputeDeck-B3

Raspberry Pi Zero W 2 Arm mounted Cyberdeck with a Chorded Keyboard

atltvheadatltvhead 11/21/2021 at 04:100 Comments

In the previous post, I mentioned that I was considering using an io expander and I did! I am using the MCP23017E/SO, which will read in all keys. The thumb navigation switch will be connected directly to the Arduino Rp2040. Here is the OSHPark Board OSH Park ~

And now I'll turn back to the ME and ID work until I receive the PCB's!