cmdr-keyboard/eCAD/rp2040_42_patch_instruction.md

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# Patch instruction to solder rp2040-zero module instead of teensyLC module
![image](rp2040_42_patch.png)
1. Solder one x6 and one x7 pin headers on the green marking.
2. Prepare wire and solder on GND pad on the PCB.
3. Prepare wires and solder on gpio 0 and 1 on the PCB.
4. Solder rp2040-zero on the two pin headers.
5. Solder GND, gpio 0 and gpio 1 on the rp2040-zero.
6. Solder wires according to picture above between rp2040-zero and PCB.
![image](rp2040_42_patch_result.jpg)