Erratic motors when using RCPassThru

@prevans wrote:

Hi there

I've been trying to use CH8 in PassThru mode (to check out undercarriage motors). As soon as I click Write Parameters in Mission Planner after changing RC8_FUNCTION the motors move randomly in jerky motions.

The chout numbers in Mission Planner are dead stable. Navio2 outputs for ch8(top) and ch4 look like

DSC_0026.jpg1024x687 180 KB

Any thoughts much appreciated, but looks rather like a Navio PWM generation issue
Thanks
Phil

Navio2
FrSky X9D tx
FrSky XSR rx

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