Here is the code to enable MadMapper to communicate with a Teensy 4.0 and directly map onto 5v WS2812 LED strips.
This way you can easily light up LEDs from a computer without too much setup.
This can do much longer lengths of LED strips. Much longer and you will need a larger power supply as the USB cable from a computer can only supply so much.
See a video walkthrough here: https://www.youtube.com/embed/Bk2nNnpYyfI
Documentation on the Teensy 4.0 in use: https://www.pjrc.com/store/teensy40.html
