To use the display, plug in both the USB-C power and the 5V 4A power. The display will start up automatically.
Control the image using the UP button on the Matrix Portal (not the topmost button, which is the RESET button). This will cycle through any images in the .bmp directory. One black image has been included to turn the display "off".
The Matrix Portal's DOWN button is used to control levels of brightness. There are eight levels, from off to full brightness, which cycle each time the button is pressed.
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