Motors run only for 1 sec



I finished building the pixhawk drone kit, having issues running propellers with the FlySky tx.

when I arm the drone, lift the left handle, the motors will run for around 1 second and then stop. If I try to keep controlling, it will stop.

  • TX and RX are successfully binded
  • All hardware has been callibrated.
  • TX has been configured same as this video course: Setting Up the RC Controller - Drone Dojo (
  • On TX calibration in MP, I am able to see the controllers moving up and down to limits, no issues.
  • On motor calibration in MP, the motors run for longer time, no issues.
  • full battery charge on TX and drone.
  • double checked all cables are plugged in all the way.
  • the channel was on 1, stabilize flight mode.

Here is a video showing my issue:


I run the dronekit script to fly and land and get the same behavior where the motor starts and stop immediately (just like the video I uploaded above).

Below is the output of the takeoff script, notice the critical error maked right after the motors started/ended:

pi@raspberrypi:~/dk $ python --connect /dev/ttyAMA0
Vehicle is now armable
Vehicle now in GUIDED MODE. Have fun!!
Waiting for vehicle to become armed.
Look out! Props are spinning!!
Current Altitude: 0
Current Altitude: 0
Current Altitude: 0
Current Altitude: 0
Current Altitude: 0
CRITICAL:autopilot:Potential Thrust Loss (3)
Current Altitude: 0
Current Altitude: 0


I think I see the issue.

Uninstall the smoke stopper and your issues should go away.

That item limits the amount of current that can reach your drone.


that did it, thank you!

closed #5

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