Hello, I have the following setup. I have a quadcopter with dual batteries connected in parallel to a 4in1 ESC. In the first flight, the copter was flying okay in position hold, when after a couple of minutes of flight the front left motor shut down and the copter crashed. One possible reasoning could be the ESC overheated and triggered a failsafe. (it was really hot to touch) All the motors still worked fine after the crash, and the structure was fine too, including the wiring. I’m attaching the log file, could someone take a look and give me their opinion on what went wrong and possible solutions in the future?
You have a bad mechanical Yaw bias. Twisted arms or motor mounts is the usual cause.
Also, Dshot150 isn’t the best choice. Dshot600 is generally more reliable. And with Dshot you may as well be using the Bidirectional Dshot version of firmware so ESC RPM is available for the Notch Filter which should be configured before tuning. And it needs tuning.