12 motors with cube orange

samane.s.h · January 2, 2022, 10:55am

Hi
I have cube orange and I want to setup a copter which has 12 motors.
I use this page for motors settings:
http://www.iforce2d.net/mixercalc/
As you can see in the image below, The frame that I chose for my multirotor is a little different:

Is cube orange suitable to use in this application? Could you please tell me any experience that you have about using lots of motors or different frame?
thank you

amilcarlucas · January 3, 2022, 7:00pm

yes, it can do that, but you do need to adapt the motor mixer values a bit. there is an example on how to do it using lua scripting.
With that method you do not need to change the firmware, just upload a simple small script.

If you use FETtec OneWire ESCs you will also be able to get telemetry from all 12 motors using a single wire.

samane.s.h · January 4, 2022, 11:00am

Thanks for your answer.
Do you know a video, document or page that has such an experience?

amilcarlucas · January 4, 2022, 11:26am

A quick google search gave me:

https://ardupilot.org/dev/docs/code-overview-copter-motors-library.html

github.com

ArduPilot/ardupilot/blob/master/libraries/AP_Scripting/examples/MotorMatrix_setup.lua

-- This script is an example setting up a custom motor matrix mix

-- duplicate the standard + Quad mix
MotorsMatrix:add_motor_raw(0,-1, 0, 1, 2)
MotorsMatrix:add_motor_raw(1, 1, 0, 1, 4)
MotorsMatrix:add_motor_raw(2, 0, 1,-1, 1)
MotorsMatrix:add_motor_raw(3, 0,-1,-1, 3)

assert(MotorsMatrix:init(4), "Failed to init MotorsMatrix")

motors:set_frame_string("scripting plus example")

https://ardupilot.org/copter/docs/common-rcoutput-mapping.html

samane.s.h · January 10, 2022, 5:07am

Thank you for your answer and guidance