The Nova board is powered by an RP2040 microprocessor, and all of the LEDs on the matrix are individually addressable. Snake ...

There’s his DIY LED display controlled by an Arduino UNO ... a quartz driver board from an analog clock to use the display as a clock as well. Let’s start with the LED matrix display, perhaps ...

Who wants to push a button on a slot ... open-source three-color matrix slot machine complete with handle. In this case, you’ll be losing all of your nickels to an Arduino Pro Mini.