Raspberry Pi 3 Model B+ Bidirectional Level Shifter 4 channels (3.3v <-> 5v) Few cables One Led Prototypes board Opinionated soldering skills Thanks to https://cbm-pi1541.firebaseapp.com/ https://mygeekyhobby.com/2018/08/12/pi1541-in-30min-with-almost-no-soldering/