I am trying to find a way to diagnose the problem (s) I am having with my drone.
My goal is to build a drone with a long flight range. Then when it flies properly, I will mount a payload such as a camera carried by a gimbal.
Since the first flight, I have observed flight behavior as well as logs (mission planner) that do not appear to be correct:
My most frequent observations in flights are:
*The yaw control is not symmetrical: the drone turns more easily to the left than to the right.
*In Loiter, sometimes it loses orientation and turn a few dozen degrees on the horizontal plane and fail to resume the initial heading
*Sometimes motors 3 and 4 start to vibrate (visible from the ground)
*Once the flight is over, engines 3 and 4 are very hot even burning while engines 1 and 2 are just lukewarm.
=>This link allows to download a zip named “wetransfer_ok_2021-08-11_1246.zip (136M) “
It contains 2 different logs:
Log - 02-08-2021-morning “the bad logs”
Log-02-08-2021-afternoon “the better logs”
Unloading the Logs makes it possible to observe significant differences between the motors, in particular on the RCOUT parameters, Motor rotation speed, motor current consumption, etc.
There might be other things to observe with the logs, but I’m a beginner and there are a lot of features that I don’t know the meaning of.
I’ll let you observe the logs.
The problem doesn’t end here. Indeed, sometimes without making any changes, the drone works better (or even much better).
The problems listed below then become much weaker. I let you see Log-02-08-2021-afternoon in the zip file.
Hope that you can help me.
Equipment currently mounted::
-Frame name: H4 680
-Radio: Radiolink AT9S
-Motors : TAROT Martin motor 4008 330KV
ESC: VGOOD; 36A; BLHELI_32; 2-6S; telemetry
GPS With Compass: M8N
-Flight controller: pixhawk 2.4.8
=> Firmware: Stable 4.0.7
=> Frame selected in Mission Planner: Quadcopter/ configuration: X
-Batterry: Li-ion 6S4P; 14000mah; weight: 1150g
-Weight drone without battery: 1250g
-Weight drone without battery: 2400g