1. The onboard BOOT button can be used in DFU mode to update the bootloader. 2. The thermistor circuit is protected to prevent damage to the MCU due to a short circuit in the heated bed and heater box connections. 3. All fans can realize VIN, 12V, 5V voltage selection through jumper wires, and different voltages can be set individually for different ports. 4. The driver and DIAG pin integrate SPI and UART mode, which can be easily configured by . 5. Support power failure recovery, filament jump sensor, automatic shutdown, BLTouch, proximity switch, RGB, etc. 6. On-board non-spring -SD card slot, the firmware can be upgraded and configured through the -SD card, which is simple, convenient and efficient. 7. The SPI expansion port has +3.3V and +5V optional, which is convenient for connecting expansion modules such as ADXL345 accelerometer. Model: SKRat 3D printer motherboard Specifications: SKRat V1.0 CAN bus interface: support CAN bus communication, more convenient for wiring and Onboard: 7-way fan interface Support: ADXL345 accelerometer STM32G0B1VET6: 32 bits, frequency up to 64MHz Onboard MAX31865: Support PT100/PT1000 ADXL345 module can be connected externally Colour:black Material:ABS Package Contents: 1 x Printer motherboard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.