I have two Tarot Ironman 650 Quadcopters with Pixhawk 2.1 Cube Black & Here2 GPS. One GPS is configured I2c, and the other is CAN. The link is Frsky R9M with Taranis Qx7 Transmitters. Both often report “Critical Error Compass” during flight, but the flight seems unaffected. I have tried to find any evidence of the error in the logs, but I’m not sure where to look. The MAG report looks OK to me. Can anyone see the cause of the error or point me to where it appears in the log?
Here is a link to the logs and parameters: