Thanks to Catherine for sending us this tip! Catherine writes:
I wrote a driver for the adafruit charlieplexed LED matrix using micropython. In this post I document all of the steps required to upload this driver to a teensy. It may be useful to others interested in getting started with micropython.
LED Charlieplexed Matrix – 9×16 LEDs: These are 9×16 Charlieplexed LEDs designed to match with the Adafruit 16×9 Charlieplexed PWM LED Matrix Driver – IS31FL3731. You don’t get any resistors or driver chips with this grid, its just a mess of LEDs in a charlieplexed arrangement. (read more)
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.