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Motor driver with the CAN-bus interface is intended to be used with the CAN-enabled SimpleBGC32 controller.

It allows you to build a 3-axis stabilizer based on a modular scheme (see connection diagram) or an extend regular stabilizer by the 4th, 5th axis, with the optimized wiring between modules that is perfectly immune to EMI noise.

This module was designed for using with the "extended" controllers (Extended, Pro, CAN_MCU), replacing the on-board drivers. Requires firmware version 2.66b1 or higher.


Input voltage: 2s–6s (6–26V)
Current: 10A continuous (15A with heatsink installed), max. 40A impulse.

Support a big number of models of absolute rotary encoders with the following interfaces:

  • SPI
  • PWM
  • I2C
  • A,B,Z
  • SSI, BiSS

Main controller connection:

  • 2x CAN, optional on-board terminator

Other interfaces:

  • Limit switch, Z-Index switch, Emergency switch and several digital I/O pins
  • 1-wire for thermal sensor connection
  • Address selection pins


  • Over-current
  • Under-voltage
  • Short-circuit
  • Over-temperature


Driver CAD drawings (4Mb 13.03.2018) Case Model for Self-Printing (STL) (139Kb 2.07.2020)



Changelog (644 b 21.05.2020) CAN Driver firmware v.1.11 (113Kb 21.05.2020)
  • Improved calibration of R,L motor parameters
  • Added extra safety checks and safety limit parameters
  • Minor bugfixes and other improvements
CAN Driver firmware v.1.07 (105Kb 24.10.2019)
  • Add a support of new encoders: Zettlex IncOder (SPI-over-RS422), iC-Haus iC-MU (SPI), TLE5012B (SPI, PWM), A1335 (SPI, I2C), AM4096 (I2C),  AS5048B (PWM), MA730 (SPI, PWM)
CAN Driver firmware v.1.00 (110Kb 1.01.2018)

How to upgrade firmware

To upgrade the firmware in the CAN_DRV module(s), connect modules by CAN interface to the main controller connected to a PC running SimpleBGC32 GUI.
Note: it's required to connect main power supply to make CAN_DRV working (they are not powered from USB).

In SimpleBGC32 GUI:

  1. Turn motors OFF by the button "MOTORS ON/OFF"
  2. Go to "Upgrade" tab, open "Connected modules" tab. Press the "Refresh" button to load information about modules.
  3. Select a required module from the list. GUI will show current hardware, firmware and bootloader versions for each module
  4. Browse for the file containing new firmware. Be careful, flashing improper file will make the device "bricked" and it will be hard to make it alive.
  5. Press "Flash" button to write firmware.
  6. Reconnect USB to restart gimbal controller and let him see changes.
  7. Connect GUI and repeat steps 2, 3 to check that new firmware is working and system operates normally.


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