Hello to all. I spent a long time in the hospital. About 5 months. Did not launch the drone at this time. Yesterday I was discharged from the hospital and I went to launch a drone. I'm upset. A constant compass error appears and the drone drifts. How to fix it? All sensors are calibrated.

Hi there, thank you for reaching out and we're sorry to hear about the trouble. With regards to that. Just to clarify what Phantom series are you using? If ever you are using a Phantom 4 series. You may give a try to refresh the firmware first using the DJI Assistant 2 in your Pc, then once you are done try to calibrate the compass. But make sure when calibrating the compass there will be no possible any interference in the area such as Magnetic interference or electronic devices that may lead to interference. Best regards!

What surface did you launch from? What was it made of?

Thanks guys. I read other articles on the forum. I solved my problem. I demagnetized the compass. The problem was in the magnetization of the compass. In the local service, I demagnetized the compass with a special device - CFixer