This power supply is used to light the LEDs; plan for ~3.5 Ampere per 32x32 panel ... the LED panels somewhere outside the picture on the left); note the notch on the right side of the connector: The ...

3 Model B is the recommended hardware choice. An RPi 3B+ should also work, but has not been tested. An RPi 4 requires additional power and is not recommended, nor has it been tested. To connect and ...