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+--- Thread: IMU Based Compass wows (/showthread.php?tid=3537)
IMU Based Compass wows - Techstyle - 2021-07-07
over the last 2 years of using OP I have ben trying to get the compass to work and have tried 3 different ones:
1. BerryIMU V2
2. HiLetgo MPU9250
3. Waveshare MPU9250 based
and cant seem to get the devices to actually perform properly during sailing. the BerryIMU I have used the most and find that, at my mooring it tracks the compass very well but as soon as I am sailing the variation from compass heading to GPS course/direction can be up to 90degrees. I picked up the Waveshare because somebody suggested it worked for them. I fitted this last weekend and have found that it was slow to keep up as I rotated on the mooring and once sailing I adjusted the direction based on GPS direction and then when I tacked, it was 90deg out.
I followed the calibration steps (https://openplotter.readthedocs.io/en/latest/pypilot/calibration.html) and have moved it around a bit to get away from most power sources.
the sensor is currently mounted vertically against a bulkhead - is there any recommendation with regards to orientation? or position? - it is located about 6ft(2m) from the center line of the boat
Thanks for any help!