Hi, we are trying to “fly” a 7 inch copter with latest arducopter firmware and with a custom build card. We succeeded flying 10 inch copters without a problem but in this 7 inch builds, we can’t manage to do it both in 4.6.3 and in the 4.7.1 now. The problem is same, it does not stay put in the air even if in the stabilize mode. And in the loiter, it’s more obvious. Like swinging. We build whole another drone after this with new motors and new ESC. Literally nothing changes. I’m uploading 2 flash logs here you to investigate it since I’m a little beginner for reading these logs. Thanks.
How were these vehicles tuned? What method or sequence of steps did you used?
Did you tuned the notch filters?
These logs are of little value. Surely it was not in a suitable state to run Auto Tune. The notch filter would not have been as you are logging incorrectly to acquire the data (Raw IMU and Fast harmonic checked).
GPS never has a satellite in either of these logs so no surprise that Loiter isn’t working. You are configured for Dshot, no ESC telemetry?
Reset to default and follow the advise to use The Methodic Configurator.