NIBBLE 0x3 Assembly Instructions Rev03 10.22.20
STOP!
It’s highly recommended that you flash the MCU (Bit-C or Pro Micro) before
soldering it so you can be sure it’s working properly. Jump to step 20 to
flash QMK firmware.
2.7 SOLDER MCU
Fit and solder the BIT-C or Pro Micro MCU as shown below. After soldering, clean with rubbing
alcohol and use the snips to clip the pins as close to the PCB as possible.