Motor Problems and Tumble

Greetings to all,

I’m using QGC(4.1.4) and Px4 (newest).

I am working on a new project and I am facing a problem that I have never encountered before.

First of all, I have to start over;
1-) When I arm the device, the motors do not start. First I bring the throttle’s arm to 80% and as soon as the engines start to spin I lower it back so it doesn’t run like crazy.

2-) there is an excessive vibration in the engines. I am attaching the video link; High Vibration at Brushless Motors - YouTube

3-) Although I get no warning on the QGC engine test screen, my engines never start.
There is a very low sound from the ESCs, but it is really low and the motors still do not turn.

Finally, I made a mistake on my first test flight and tried to fly in auto mode and crashed to the ground at a distance of about 1.5 meters from the ground. I think my drop was due to PID because it tumbled and fell while trying to balance itself in auto mode. It’s not my video, but I’m attaching an example video; T960 high vibrations and instability - YouTube


Please do not withhold what you know. Thanks for be interested.
İşleniyor: log_48_2021-10-22-18-28-44.ulg…

Hi @Cihangun_Ayyildiz ,

You probably forgot to calibrate the ESC range, they should start immediately after arming: ESC Calibration | PX4 User Guide

Also, fly first in stabilized to tune the rate and attitude loop, then altitude, then position and finally in auto mode. See Multicopter PID Tuning Guide | PX4 User Guide for more details.

Good luck!