I was flying my quad using the simple arm and takeoff code by dronekit and kept my RC on because of the failsafe. I calibrated all the channels but somehow my Roll channel was biased to the left. The drone took off as expected but while landing it started descending sideways and crashed into a nearby truck. Luckily I was flying at just 4 meters so it didn’t go into a building. I set my channel 1 trim (Roll) again to the midpoint using subtrim and calibrated the RC again and it flew with no issues.
Is there a way to fix the RC values to 1500 and define the limits safely so it doesn’t wander about while landing? Also is there a way for it to land using GPS coordinates. Because it can go to a point using the coordinates but it lands what it thinks is straight down. Can I set some coordinates so it rectifies its position when it is going astray?