I need help in understanding is there something I am doing wrong “or” there is bug either in “Plane 3.9.8 Official” or Mission Planner version 1.3.68 Build 1.3.7105.26478 Ardu Plane V3.9.8 (6ea22c9c).
You click ok and nothing happens. Unable to go any further pass this stage. ESC Type drop down box can not be selected either as its not available.
Is this ESC calibration feature not applicable when using Frame type to be Ardu Plane?
My ESC is EMAX BLHeli 40A, with +5V UBEC. When I connect the ESC directly to a receiver (Channel 3), put TX throttle stick to full, power on the ESC, it calibirates perfectly fine and I can turn the motor on and off via TX.
When I connect the ESC to PixHawk Channel 3, power on the PixHawk, the PixHawk powers up fine. I can control the Servos, but when I give it a full throttle, motor doesn’t start.
Inside Mission planner, I can see the PWM value of channel 3 is ranging from 982 to 2006. Any idea why the motor is not starting via PixHawk? Why Mission planner “or” PixHawk is failing here?
Note: Inside Mission planner, section “Servo output”, if I click on reverse Throttle, the motor does start at full speed but again the TX throttle stick has no effect on it. For sure it looks like PWM issue.
Furthermore, Inside “Servo Output” Section inside Mission planner, when I move the throttle stick, the values DO NOT Change, however under radio calibration value do change for throttle stick. This is very strange…so lost…
WIRING - You wire PixHawk as you would normally wire for a Plane config (CHAN 1 - Aileron, CHAN 2 - Elevator, CHAN 3 - Throttle to ESC, CHAN 4- Rudder) - except put a switch or have the ability to disable power to Throttle/Motor ESC power that would normally come from PixHawk Power regulator to ESC.
Initially Keep this power switch off so no power to ESC.
Note: I am assuming at this point you have gone through basic steps of Accel, compass, and radio calibration and also have set your flight mode switch. We must be able to select stabilize mode to do this process.
MISSION PLANNER RELATED CHANGES.
ESC Calibration Process.
At this point if you move back the Throttle stick up, the motor should start to run. if not, simply power down the PixHawk, power it up but also provide power to ESC as well.
The throttle should make the motor to spin!!!