I have the RGB LED Matrix working running off a raspberry pi. I modified an example from https://github.com/hzeller/rpi-rgb-led-matrix to receive pngs over ZeroMQ and display them. Currently I can get about 30fps of live streaming video from a webcam running from a simple python app. I want to use this to iron out issues with the display flickering and displaying a consistent refresh rate before I move to generating and sending pixel art style images and animations.