Shenzhen BIGTREE technology co., LTD.
BIG TREE TECH
10) Two CNC fan interfaces;
11) Increase the distance between the driving chip and the components to
avoid the trouble caused by the heat sink;
12) Add protection device to the thermistor interface;
13) 5V power supply with BLtouch, TFT and RGB interfaces is optional;
14) The driver shares a physical UART port, which saves IO and
enhances stability.
2. Motherboard parameters:
Appearance size: 100.75 * 70.25mm
Installation size: check BTT SKR MINI E3 V2.0-SIZE.pdf for details
Layer: 4 layers
MCU: ARM Cortex-M3 STM32F103RCT6
Power input: DC 12 / 24V
Logic voltage: 3.3V
Motor driver: UART mode of onboard TMC2209;
Motor drive interface: XM, YM, ZAM, ZBM, EM
Temperature sensor interface: TH0, THB, 2 channels 100K NTC (thermal
resistance)
Display: 2.4 inch TFT, 3.5 inch TFT, Ender3 original LCD12864 screen,
etc.
PC communication interface: mini-USB-B type, easy to plug and unplug,
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