Hello everyone
So I am building a 2.7kg quadcopter for indoor flight using this components: Pixhawk 6C, Tmotor MN3510 630KV, 12x5.5inch carbon fibre propeller, 40A ESC, 4S lipo battery 5000mAh, depth cam, and optical flow MTF01 for supporting flight without using GPS. I was checking these configuration using eCalc website and there is no problem with all of the components. My drone has been operating smoothly since January and there is no problem during past flights. But yesterday in the 3rd flight after two successful flight in altitude holding mode, when I try to fly it again, after several seconds, my Mission Planner shows error message “Potential thrust loss (4)” and the feel of the drone controlling from remote control is different (more uncontrollable). I want to check if the error message shown in other flight mode, so I’m trying to check in the stabilize mode. After several seconds, there is showing error message but different, “Yaw imbalance 38” and then changed to “Yaw imbalance 40%”.
I tried to check in this forum but there is no solution I got after trying the solution i found. And then I tried to disconnect the ESC’s cable from I/O PWM ports to check if there are any peak/abnormal voltage during throttling the quadcopter. But the results is still good and normal, there is no peak voltage in each percentage of throttle. So I changed the flight controller to another pixhawk 6C and still showing the same error.
From this problem and solving method I tried, I think that the problem is not from the propulsion components, thrust to weight, or unlevel motor position (cause I checked it using water pass for all of the motors). I didn’t change any parameters since the second successful flight until right now, both from Mission Planner or Remote Control.
I’m very confused about this problem. Is there any idea to solve this problem? Is it possible to solve If I re-flash my pixhawk? Please hit me up
