Shenzhen Big Tree Technology Co., Ltd.
BIGTREETECH
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CONTENTS
Revision History ................................................................................................... 4
Product Profile ..................................................................................................... 5
Feature Highlights ........................................................................................ 5
Specifications ............................................................................................... 6
Dimensions ................................................................................................... 8
Peripheral Port ..................................................................................................... 9
Connector Diagram ...................................................................................... 9
Pinout Diagram ............................................................................................. 9
Connection Description .................................................................................... 10
USB Power Supply ..................................................................................... 10
Stepper Driver ............................................................................................. 10
STEP/DIR (STANDALONE) Mode ........................................................ 10
UART Mode of TMC Driver .................................................................. 12
TMC Driver SPI Mode .......................................................................... 12
TMC Driver DIAG (Sensorless Homing) ............................................. 12
Driver Voltage Selection ...................................................................... 13
Install the Core Board via BTB Connection .............................................. 13
Voltage Selection for CNC Fan .................................................................. 14
100K NTC or PT1000 Setting ...................................................................... 15
BLTouch Wiring ........................................................................................... 15
Wiring between LCD Screen and EXP1+EXP2 ......................................... 16
RGB Wiring .................................................................................................. 16
Filament Sensor Wiring .............................................................................. 17
40 Pins GPIO ............................................................................................... 17
DSI/CSI Wiring ............................................................................................. 18
Proximity Switch Wiring ............................................................................. 18
Raspberry Pi CM4 Usage Instructions ............................................................. 20