Use of channels 5-8 on QuadPlane on Navio 2

Hello, i am building a VTOL at the moment. Since i need to use ch 5,6,7,8 for the quad motors i am wondering if there are still problems with those ports or have been fixed.


The old issue you’re referring to is not fixed but I reckon it’s not the case where it might get in the way.
There’s a report of a successful quadplane buil that you should check out.

Read it but the channels reassigned are not updated.

I really do not understand why old issues are not adressed and consolidated before releasing new features…


Sorry, Corrado.

We’re doing our best to make your experience as flawless as possible but some issues are much more difficult to fix as it might seem.
This is a bug that is well documented and has workarounds as you saw in another thread.

We’ll try to reproduce and we’ll get back to you ASAP.

Really understand and appreciate the effort, what i am saying is that solving and consolidating features and issues already present would be a stronger foundation on wich develop new functions.


Hi, Corrado.

There is a really simple workaround for the issue with erratic PWM on channels 5-8.

You should reassign channels 5-8 to 9-12. To do this follow the steps:

  1. connect to Mission Planner;
  2. move to Full Parameter Tree section in Configuring tab;
  3. change value of RCx_FUNCTION (x - number of channel):
  • set functions of RC5 - RC8 to 0;
  • set functions of RC9 - RC12 to 33 - 36 respectively for assign channels 9 - 12 to motors 1 - 4;

Now your parameter tree should looks like this:

When everything is done, restart APM for the changes to take effect.

The results of this steps are shown below:

PWM on channels 5-8 before the reassignment

PWM on channels 9-12 after the reassignment

Thank you very much for the quick and detailed answer!!!