Hi Community,
I have replaced the Devo control in a Walkera Tali H500 with an old Pixhawk1-1M. So far, seems to work ok. After upgrading to >=AC4.2.0 no input is displayed. Downgraded to AC4.1.5 and it works again.
Any parameters to adjust, like SR to get the Mavlink messages with more recent versions > AC4.1.5 ?
Regards Espen
You need to set the serial port to mavlink 1, it would automatically switch back to mavlink1 on firmware older than 4.2.
Tnx, Thought I did test this but I will do it again 
Tnx again, Now I have flashed AC4.2.2 and I have set Serial Port 0 with Mavlink2 protocol(2), Serial Port 1 with Mavlink1 protocol(1), Serial Port 2 with Mavlink2 protocol(2), Serial Port 3 with GPS(5), Serial Port 4 with passthrough(10), Serial Port 5 with passthrough(10). MinimOSD works Tnx
Now another problem solved, I could not ARM the motors. Armchecks was disabled (0) SafetySwitch works, Sound like ARM/DISARM is ok but no motor started to spinn.
Problem was; The MOT_PWM_MAX & MIN values being Zero (0). I checked the RC3_MAX & MIN values RC3 MAX (1910) RC3 MIN (1109) and input some values for test MOT_PWM_MAX (1900) & MIN (1050) I dont know if these are opimal values, but motors started up.
Reason could be that I had loaded old parameters from ver AC4.1.5 Need to search for other impacts.