WARNING: The shipped firmware with the Motor Shield is bugged. You need to update it. You can update it from Windows with a D1 Mini. You can find the update instructions below. Upload an empty sketch ...

This is an implementation of the driver for the Wemos D1 Mini Matrix LED shield, which utilizes the TM1640 chip by Titan Micro. It implements a weird protocol, which reminds both of I2C and SPI but is ...