@rsummers wrote:
I have built the same drone for some time a Tarot 650 with Pixhawk and now using the Radiolink pixhawk. I use the Scotty F. build for telemetry and have stayed with 3.2.1 for that reason it has worked and flown smooth. This time I cannot find why the motors pulse even at low speed on the ground in stabilized mode and loiter in the air. WhenI bypass the FC they run smooth, I changed to an original well tuned Pixhawk and it does the same. I have reviewed the logs as well as I know how and nothing. I am thinking the information for throttle passes thru the FC to the ESC is corrupted yet I cannot determine where or why. Has Qbrain changed their ESCs? i have tried two with the same issue. My other thought is the firmware it came loaded with has corrupted the firmware, I reset to default even loaded old firmwares and built back to 3.2.1 still didn't work. If you can help please let me know I have tried all i know.
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