BIGTREETECH
Produced by BIGTREETECH
OCTOPUS - PRO
USER GUIDE
October 18
2021
Version 01.02
Page 1: ...BIGTREETECH Produced by BIGTREETECH OCTOPUS PRO USER GUIDE October 18 2021 Version 01 02...
Page 2: ...obe 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 proximi...
Page 3: ...DOCUMENT CHANGE HISTORY VERSION CHANGES RELEASE DATE 01 00 Initial release 01 10 21 01 01 Included the klipper config for the 429 variant 12 10 21 01 02 Various updates to pictures and wording correc...
Page 4: ...D FEATURES 1 Uses a 32 bit ARM Cortex M4 series Option A comes with an STM32F446ZET6 main control chip with a core frequency of 180MHz and a flash capacity of 512kB Option B comes with an STM32F429ZGT...
Page 5: ...hen using larger fans This is because of the inductance in the fan coils The octopus includes flyback protection on each fan port which will protect the FETs from damage caused by turning the fans on...
Page 6: ...ws you to short a thermistor input directly to a voltage source not that this makes it a good habit to pick up up to Vin without causing damage to the motherboard 24 Supports BL Touch and various othe...
Page 7: ...29ZGT6 4 Recommended motherboard input voltage DC15V 28V 5 Motor input voltage range DC12 60V 6 Bed input voltage range DC12 28V 7 Motor drivers Pluggable drivers supporting all popular driver types 8...
Page 8: ...Produced by BIGTREETECH 7...
Page 9: ...e and low dropout power supplies to provide the supply rails of 12V 5V and 3 3V The 12V 5V and 3 3V rails are made available via various pins on the motherboard Consult the PINS pdf document to find a...
Page 10: ...supplied to the Relay 1 2 module after it has cut power to the motherboard it is extremely dangerous to touch the it while the printer is still connected to mains Always remove all mains power when w...
Page 11: ...GTREETECH 10 2 4 POWER LOSS RECOVERY MODULE WIRING When using the BIGTREETECH mini UPS wire it to the motherboard as shown in the figure below As always never perform any work on the motherboard with...
Page 12: ...her need for the USB C port you are still able to connect the raspberry pi to the motherboard using a direct serial connection over UART or SPI Dedicated UART and SPI pin headers have been made availa...
Page 13: ...NPN style probe where the output pulls to ground when it is active You can tell this by checking the output of your probe using a multimeter If it floats when it is not active with nothing else connec...
Page 14: ...Produced by BIGTREETECH 13 Refer to Section 4 2 for further information on how to configure the voltage used by the probe port...
Page 15: ...t common drivers This should be viewed as a convenience to the user and we still recommend that you consult the datasheet of your driver manufacturer In the above image the red rectangle isolates the...
Page 16: ...Produced by BIGTREETECH 15 3 3 SPI MODE When using a driver in SPI mode connect the jumpers beneath that driver as shown in the image below...
Page 17: ...the motherboard Setting the jumper for any given driver to the right as shown in the image below will provide the motherboard input voltage for that driver to use Generally the motherboard uses 24V Se...
Page 18: ...same configuration even though they can be individually configured Configure the jumpers as below to select 12V Configure the jumpers as below for 5V Note Since the jumpers carry a voltage rail direct...
Page 19: ...e below The exact diag numbering can be found by looking at the pins file or the silkscreen beneath the board 4 4 MCU POWER JUMPER The Octopus can be powered using the USB C port by inserting the jump...
Page 20: ...as switch numbers and the on position printed on it Select the connection arrangement for your thermistor according to the table below Bear in mind that you will still need to configure your firmware...
Page 21: ...setting in the blue box 2 4 wire arrangement Using a 3 wire arrangement will require you to move the resistor from the blue box into the red box and then to leave the pads in the blue box unpopulated...
Page 22: ...Produced by BIGTREETECH 21 5 MOTHERBOARD PHYSICAL SPECIFICATIONS 5 1 MOTHERBOARD SIZE 5 2 MOTHERBOARD CONNECTORS...
Page 23: ...Produced by BIGTREETECH 22 5 3 MOTHERBOARD PINS The image below is a snippet taken from the PINS pdf document For better viewability please consult the PINS pdf document...
Page 24: ...fails to do so you can visit our GitHub website https github com bigtreetech tab repositories and find the corresponding repository to download the driver If you would like to confirm that the driver...
Page 25: ...install_platformio_vscode html https www youtube com watch v eq_ygvHF29I Once you have either compiled your own version of Marlin or downloaded a pre compiled version you can install it by following...
Page 26: ...d by BIGTREETECH 25 The 429 variant of the board makes use of a different frequency crystal oscillator 8MHz and therefore the klipper configuration needs to be adjusted slightly as show in in the imag...
Page 27: ...will need to use an external MOSFET Do not connect a voltage source greater than 28V to this input 4 Never short circuit the 3 3V 5V 12V or 24V supplies to each other Doing so will let out some smoke...
Page 28: ...our latest support contact details at our website https www bigtree tech com If you have any comments or suggestions on this or any of our other products then please reach out to us via our support c...
Page 29: ...acturer of your drivers it is recommended that you still find the datasheet for your drivers and reference the pin settings required for the microstepping factor that you desire Note that the pin nami...
Page 30: ...Produced by BIGTREETECH 29...
