Quantity   Component name
1 × RP2040-Zero
75 × MX-type mechanical switches https://vi.aliexpress.com/item/1005005818694764.html
1 × 9 pin aviation connector Totally optional
100 × 1N4148 SOD-523 diodes
3 × Single color led
1 × EC11 encoder
10 × 10k resistors 0805
2 × MCP23S17-E/SS Microprocessors, Microcontrollers, DSPs / IO Controllers
1 × 0.91" I2C OLED screen https://www.aliexpress.com/item/1005001699452276.htm
20 × M2x8 countersunk bolts
3 × M3x16 countersunk bolts
75 × Low profile keycaps of choice