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Setting throw limited on Elevons

Posted by Dennis Megarry on September 27, 2013 at 3:00pm

Trying to figure out how to setup the elevon limits.. I'm using APM 2.5 with MP 1.2.78

What I'm trying to set up is:

Ailerons: +1" -1/2"

Elevator: +3/4" -3/8"

I can get this setup fine in my radio the APM is using max throws.. Been trying to research this but coming up with nothing..

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apm, ardupilot, elevon, mixing

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Replies

iskess September 27, 2013 at 4:03pm

I guess I never had that issue because I always set my control throw limits mechanically.
In Auto the APM shouldn't use more than it needs if tuned right. How is it flying?
You could try setting the RC_Min and Max parameters directly, but MP is doing that for you when you do the calibration.
Sorry I can't be of more help.
iskess September 27, 2013 at 3:37pm

Hello Dennis,
Once you limit the throws utilizing your radio, then you re-calibrate the controls through MP. That process teaches the APM the limits of the PWM signal associated with full stick input. I hope that helps.

PS. Still wishing you could post your CHDK script utilizing shut_down.

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