Hey everyone! I’ve been building a custom 3x3 hotkey macropad using the RP2040-Zero and CircuitPython—and it’s still a work in progress!

So far, I’ve got:

🔲 Matrix input setup for 9 keys (saves GPIO!)

🔁 Mode switching (Spotify, Blender, + 1 spare)

🎛️ Rotary encoder support for volume + mode toggle

It’s functional, but I’m still refining the firmware and adding features. OLED display is skipped for now, but may come later. The goal is to keep it clean, modular, and open to new ideas.

📂 GitHub Repo: https://github.com/SusKeyboard/3x3-Matrix_Keyboard.git

Would love feedback or collab ideas! Still testing and tweaking—happy to share progress or help anyone building similar.