Just how much variability should I expect between
MAG readings? A dump of IMU_MAG_RAW messages from a recent log
taken with the drone resting on a table looks like this:
349.004 201 IMU_MAG_RAW 73 79 23
349.102 201 IMU_MAG_RAW 73 83 19
349.151 201 IMU_MAG_RAW 75 73 21
349.200 201 IMU_MAG_RAW 71 85 17
349.249 201 IMU_MAG_RAW 72 84 24
349.298 201 IMU_MAG_RAW 74 84 22
349.346 201 IMU_MAG_RAW 69 83 23
349.444 201 IMU_MAG_RAW 71 79 17
349.492 201 IMU_MAG_RAW 72 80 20
349.542 201 IMU_MAG_RAW 71 81 21
349.639 201 IMU_MAG_RAW 71 83 21
349.688 201 IMU_MAG_RAW 71 81 21
349.737 201 IMU_MAG_RAW 75 79 25
349.834 201 IMU_MAG_RAW 75 75 23
349.882 201 IMU_MAG_RAW 71 75 25
349.933 201 IMU_MAG_RAW 77 81 27
349.985 201 IMU_MAG_RAW 70 82 22
350.029 201 IMU_MAG_RAW 75 81 25
350.128 201 IMU_MAG_RAW 68 76 24
350.225 201 IMU_MAG_RAW 74 76 22
350.274 201 IMU_MAG_RAW 72 82 22
350.322 201 IMU_MAG_RAW 71 83 21
350.373 201 IMU_MAG_RAW 72 80 20
350.468 201 IMU_MAG_RAW 74 76 24
350.517 201 IMU_MAG_RAW 73 79 15
350.568 201 IMU_MAG_RAW 74 78 18
350.615 201 IMU_MAG_RAW 71 81 19
350.664 201 IMU_MAG_RAW 75 81 21
350.713 201 IMU_MAG_RAW 70 82 16
350.762 201 IMU_MAG_RAW 73 85 27
350.810 201 IMU_MAG_RAW 68 76 22
350.862 201 IMU_MAG_RAW 75 79 25
350.908 201 IMU_MAG_RAW 70 80 24
350.956 201 IMU_MAG_RAW 70 82 24
I have no idea whether this should be considered normal...