**Trying to build a Hall Effect keypad as a complete beginner — looking for guidance and maybe existing files**
I want to build a custom 3-key Hall Effect keypad from scratch (pretty much a rooting uwu). I already have Magnetic switches, and the rough plan is:
- Custom PCB in KiCad with a Hall Effect sensor (SS49E or DRV5056) under each switch
- Raspberry Pi Pico reading the analog sensor output via ADC
- 3D printed case
- KMK firmware with adjustable actuation thresholds
The problem: I've never designed a PCB, I've never soldered, and I've never written firmware. I've done a lot of research and I understand the concept, but I'm struggling to actually get started.
If anyone has done something similar — a Hall Effect macropad, a custom analog keypad, anything in that direction — I would really appreciate:
- Any KiCad files, schematics, or firmware I could use as a starting point
- General advice for a first-time PCB builder
- Warnings about mistakes you made that I can avoid
Happy to share everything I end up making once it's done. Thanks in advance