This board is used to power the Model R2, Model R1, and Model V.
It integrates a WiFi enabled ESP32 Pico Processor with 4MB of integrated memory.
The stepper motor driver is a TMC5072 motion controller. This driver is caplable of powering two stepper motors at 1.1A each.
Input power is supplied via 12V USB cable. The Button PCB is required in order to convert the 12V power plug into USB.