keychron_qmk_firmware/keyboards/tmo50/keymaps/default
..
keymap.c
readme.md

Additional info

Matrix

You probably tried or will try to configure the keymapping to your liking. To make it easier configuring your layouts, photo of keyboards matrix will help.

TMO50 matrix

Pinout

Most of the pinout can be found in config.h but there's here's a table of all the used pins for TMO50 (including indicator LED pins)

Pin Assigned to
D5 Row 0
D3 Row 1
D2 Row 2
D0 Row 3
D1 Col 0
D4 Col 1
F0 Col 2
F1 Col 3
F4 Col 4
F5 Col 5
F6 Col 6
F7 Col 7
D6 Col 8
D7 Col 9
B4 Col 10
B5 Col 11
B6 Col 12
C6 Col 13
B7 Backlight
C7 RGB LEDs
B0 LED 4 (L4)
B1 LED 3 (L3)
B2 LED 2 (L2)
B3 LED 1 (L1)

Indicator LEDs

Their size is 2×3×4mm. The THT hole without a circle on the pcb is VCC(+) and the other one is connect to their corresponding pin.