Shenzhen Big Tree Technology CO.,LTD .
BIG TREE TECH
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1. Introduction
The BIGTREETECH SKR 3 mother board is a brand new 32 bit motherboard developed
by Shenzhen Big Tree Technology Co., Ltd that fixed all the problems of the
V1.4/Turbo board with new features and improved functionality.
1.1 Features
1. Utilize 32bit 480MHz ARM Cortex-M7 serires STM32H743VI MCU for massively
improved performance
2. TPS5450-5A power supply chip，support DC12/24V power input, current output
rated at 5A max continuous and 6A max instantaneous，sufficient power
supply for Raspberry pi(3A requirement)
3. Onboard BOOT button to enable DFU mode to update bootloader
4. Thermistor circuit is protected to prevent MCU damage from shorted heatbed
and heater cartridge connection.
5. Selectable voltage (24V, 12V, 5V by SKR 3-DC MODE)for CNC fan (Note: The
voltages of the 3 * CNC fans are unified, different voltages cannot be set
separately for different ports)，no more need for external stepdown thus
prevent board damage from user error
6. Thermistor connection supports Pull up resistance value setting using
jumpers, No more extra module needed for PT1000
7. Supports all models of Serial TFT, SPI TFT, and LCD12864/2004 from BTT
8. Firmware installation from using MicroSD card, simple and efficient
9. Integrated SPI and UART mode of TMC driver and DIAG pin，easily
configurable with jumpers
10. Supports power loss recovery, filament runout sensor, Auto poweroff,
BLTouch, RGB led etc.
11. High efficiency MOSFET for less heat generation
12. Replaceable fuse for easy maintenance
13. WIFI module（ESP-12S、ESP-07、ESP32）supported
14. Onboard SDIO MicroSD slot for Higher transfer rate
15. Onboard EEPROM for setting storage
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