Staggered Columns Split Budget AF 40% ergonomic keyboard

The SCSBAF40 keyboard is 40% Staggered Columns Split Budget AF ergonomic keyboard. Heavly inspired by REVIUNG34 and Squiggle.
Project goals:
- single arduino, simple design
- split
- staggered columns with dimensions fitting my fingers length
- easy to build with easily obtainable and cheap parts
- all software written in arduino IDE
- minimum 40 keys (that's main difference between this project and squiggle or reviung)
| Qnty | Parts | price (per piece) |
|---|---|---|
| 1 | PCB | ~5$ |
| 1 | pro micro | ~3$ |
| 2 | Ethernet connector | ~1$ |
| 8 | rubber feet | <1$ |
| 40 | 1N4148 DO-35 diode | <1$ |
| 40 | MX compatible keycap (1U) | <1$ |
| 40 | MX compatible switch | 0.2$ (gateron) |
