Bigtreetech SKRat V1.0 is a 32-bit control board for 3D printers and CNC-style motion, powered by an ARM Cortex-M0+ STM32G0B1VET6 at 64MHz. It offers flexible stepper driver modes (SPI/UART/STEP-DIR) with DIAG jumpers, 5 motor channels (X, Y, Z with dual Z, E0, E1), strong heater/fan outputs, USB-C, and extensive expansion (CAN-FD, BLTouch, PS-ON, RGB, I2C/SPI/UART). It supports Klipper RatOS and Marlin firmware.
- 32-bit 64MHz MCU for responsive control
- Flexible driver support: SPI/UART/STEP-DIR with DIAG via jumpers
- Rich expansion: CAN-FD, BLTouch, runout, PS-ON, RGB, I2C/SPI/UART
- Advanced temperature sensing with PT100/PT1000 support
- USB-C connection and broad display compatibility
- Per-port voltage selection