User Manual

Pins R2, G2 and B2 (labeled R1, G1 and B1 on some
matrices) deliver data to the bottom half of the display.
These connect to the next three Arduino pins…
On Arduino Uno and Adafruit Metros, that’s pins 5, 6
and 7.
On Arduino Mega, pins 27, 28 and 29.
Row Select Lines
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