User Manual

The shield requires a small modification to work with the

Adafruit Metro M4:

Use a small file or hobby knife to cut the PCB trace

between the two pads indicated here.

Solder a wire from the adjacent “CLK” pin to the

“Analog In 4” pin.

A corresponding change is required in one’s code — look for the “CLK” pin definition in any of the matrix examples…

And change the “8” to “A4”:

#define CLK 8

#define CLK A4