BIGTREETECH SKR 3 User Manual

Shenzhen Big Tree Technology CO.,LTD .
BIG TREE TECH
7 / 39
16. 2 method for CAN connection:USB & XH2.54 6Pin，USB port CAN/USB mode is
selected by switches.
1.2 Specification
1. Dimention：110*85mm, for details please refer to：BIGTREETECH SKR 3-
SIZE.pdf
2. Mounting pattern：102*76mm
3. MCU：ARM Cortex-M7 STM32H743VI
4. EEPROM：24C32 32Kbit
5. Voltage in：DC12V-DC24V
6. Logic voltage：DC 3.3V
7. Heater connection：Heated bed（HB）、 heater cartridge（E0、E1）
8. HB port max current：10A continuous ，11A instantaneous
9. Heater cartridge max current：5.5A continuous，6A instantaneous
10. Fan port：3 X CNC(selectable voltage) ,2 X always on(PSU voltage)
11. Fan port max current：1A continuous，1.5A instantaneous
12. Overall max current(HB+E0+E0+All fans):10A
13. WIFI connection：ESP-12S、ESP-07S、ESP32
14. Expansion port：BLTouch（Servos、Probe）、PS-ON、PWR-DET、Fil-DET、RGB、CAN
FD
15. Steppers supported：TMC5160、TMC2209、TMC2225、TMC2226、TMC2208、TMC2130、
ST820、LV8729、DRV8825、A4988 etc.
16. Stepper driver mode：SPI、UART、STEP/DIR
17. Stepper motor socket：X、Y、Z（双 Z 轴）、E0、E1 5 channels in total
18. Thermistor: 2 X thermistor port(NTC/PTC selectable)
19. Display：Serial、SPI、LCD
20. PC connection：USB A
21. Supported file format：G-code
22. Supported kinematics：Cartesian、Delta、Kossel、Ultimaker、CoreXY

BIGTREETECH SKR 3 Specifications

General

Brand	BIGTREETECH
Model	SKR 3
Category	Motherboard
Language	English