bilimbi keyboard firmware

bilimbi keyboard. 4x3 matrix.

Key matrix pinout

col: D4, C6, D7, E6
row: B4, B5, B6

LED matrix pinout

col: F4, F5, F6, F7
row: B1, B2, B3

BOM

1   Pro Micro (5V, 16MHz)
2   12pin SIP headers, or 1 24 pin machined pin DIP socket
12  1n4148 diodes, save the cut off leads for use with machined pin socket
12  switches

Needed if you want LEDs

12  LEDs
3   Resistors for LEDs (R1-R3). Use online LED caculator to choose value. Target 10mA single LED output.

Optional for i2c

2   4.7k resistors (R4, R5)