TABLE OF CONTENTS
Table of Contents ...................................................................................................................... 1
Document Change History ........................................................................................................ 2
1 Introduction to BIGTREETECH Octopus-PRO V1.0 ......................................................... 3
1.1 Octopus-pro motherboard features ................................................................................ 3
1.2 Octopus-pro motherboard parameters ........................................................................... 6
2 Motherboard wiring............................................................................................................. 8
2.1 Power wiring .................................................................................................................... 8
2.2 Automatic power down wiring ......................................................................................... 9
2.3 BL Touch wiring .............................................................................................................. 9
2.4 Power loss recovery module wiring .............................................................................. 10
2.5 RGB LED wiring ............................................................................................................ 11
2.6 Raspberry pi wiring ....................................................................................................... 11
2.7 Probe port wiring ........................................................................................................... 12
3 Stepper driver operational modes.................................................................................... 14
3.1 Step/dir mode ................................................................................................................ 14
3.2 UART Mode .................................................................................................................. 14
3.3 SPI Mode....................................................................................................................... 15
4 Motherboard jumper settings ........................................................................................... 16
4.1 Motor power selection jumpers .................................................................................... 16
4.2 Fan and proximity switch voltage settings ................................................................... 16
4.3 Stallguard jumper settings ............................................................................................ 18
4.4 MCU power jumper ....................................................................................................... 18
4.5 PT100/PT1000 DIP Switches ....................................................................................... 19
5 Motherboard physical specifications ................................................................................ 21
5.1 Motherboard size .......................................................................................................... 21
5.2 Motherboard connectors ............................................................................................... 21
5.3 Motherboard pins .......................................................................................................... 22
6 Communicating with the motherboard ............................................................................. 23
7 Motherboard firmware support ......................................................................................... 24
8 Precautions ....................................................................................................................... 26
9 A thank you from bigtreetech ........................................................................................... 27
Appendices .............................................................................................................................. 28
A1. Common driver jumper tables ...................................................................................... 28
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