AtomS3R bmm150 magnetometer readings

[mgrouch]

I'm getting really bad magnetometer readings from AtomS3R bmm150
using m5stack libraries.

atan2(mag.x, mag.y) should give some reasonable result in radians.

However I do not see it being even close.

My code:

https://github.com/bareboat-necessities/bbn-atomS3R/blob/07bdf3e322c907e398563786f0af95e70cd635ac/bbn_atomS3R_mahony/bbn_atomS3R_mahony.ino

I think there is a bug in m5stack unified library which reads that sensor.

Thanks,

[proTartareSauce]

Hi there, I'm using an M5core2 with the GNSS module and getting really strange readings form the bmm150 as well. Did you find a fix ?

Best,

[mgrouch]

@proTartareSauce

m5stack code for calibration is very primitive. It doesn’t do sphere fit. That’s the issue I had

[sywong2000]

@mgrouch I can use the M5Unified library to read a reasonable readings from the BMM150. Yet have to work on the orientation. In my case I have to invert the X-axis value and Z-axis value and able to calculate into a tilt-compensated headings