A short tutorial for doing calibration of the Walkera QR-X350 Pro quadcopter. This calibrates the compass so the drone "knows" which way it's going. This calibration should be performed the first time the drone is flown and any time the QR-X350 Pro is flown at a distant location. I can't say specifically how far "distant" is, but if I go to a location ten miles or more away I will do a calibration.

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