BIGTREETECH SKR Mini E3 V3.0 Control Board with TMC 2209 UART

SKR MINI E3 V3.0 is a motherboard tailored specifically for Ender3 printers, a perfect replacement for original Ender 3 printer motherboards.

v3.0 Updates:

• Increased SPI output port +3.3V power supply, external SPI sensor power supply voltage +3.3V and +5V optional.
• PC communication USB interface is changed from Mini USB to Micro USB B, which is more adaptable.
• Increased the power supply of the SPI output port, support the motherboard to directly supply power to the peripherals.
• Onboard TMC2209 mute driver UART mode, support mute printing.
• Increased the thermistor interface protection circuit to prevent burning of the main control chip.

Specifications: 

• Product Size:103.75*70.25mm
• Board Layer:4
• MCU:STM32G0B1RET6/STM32G0B0RET6
• Power Input:DC12/24V
• Logic Voltage:3.3V
• Motor Driver:UART mode of on-board TMC2209
• Interfaces Of Motor Driver:XM,YM,ZAM,ZBM,EM
• Interfaces Of Temperature Sensor:TH0,THB,2-way 100K NTC(RTD)
• Matched Display Screen:2.4-inch TFT,3.5-inch TFT,Ender3 original LCD12864 screen,etc.
• PC Communication Interface:USB Micro B type,easy to plug,communication baud rate 115200
• File Format:G-code
• Recommended Software:Cura,Simplify 3D,Pronterface,Repetier-host,Makerware
• Onboard EEPROM:24C32
• Double Z-axis interface：YES
• CNC Fan Interfaces：3
• 5V Power Supply：BL Touch,TFT and RGB interfaces，DCDC5V V1.0 Module
• Onboard 5V Power Supply
• Onboard Sensorless Homing Function
• Support firmware: Marlin, Klipper
• Support: SD card offline printing
• Support: online printing
• Support: SPI, UART expansion, can connect to Raspberry Pi through SPI, UART, USB (Type-C) virtual serial port
• Support 2 heating rod output (heating rod, hot bed). Support three-way controllable fan output. Support 4-way limit switch.
• Integrated RGB color light strip drive circuit
• support：BL touch,filament detection,power-off resume,automatic shutdown(PS-ON),etc
• Compatible：Ender 3,Ender 3 Pro,Ender 5,CR 10

Instructions and Firmware