He runs on a $20 M5StickC Plus 2. Flashing takes 2 minutes from the browser at clawy.lol/flash, no Arduino IDE needed. It uses Claude Code's native hook system over local WiFi and nothing leaves your network.
I built this as a prototype for myself because I wanted to keep track of my sessions while looking at other things in and around the house and not wanting to use terminus. So thought it would be a fun thing to make as an experiment. When I got some nice reactions on it I thought I'd make it available for everyone. It's rough around the edges but it works. The repo is here: https://github.com/marcvermeeren/clawy if you want to try it out!