I'm making a small autonomous vehicle, it is about 300x300mm in size. I need to get a heading for the robot. I currently have a CMPS03 compass but am finding that it is highly sensitive to soft iron interference. I would like to know if the LSM303 or CHR-6dm would provide a greater resistance to these environmental distortions?
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\$\begingroup\$ @user886922 - It is detectting real disturbances in the magnetic field (Luke*). Any other competent sensor will detect the same disturbances. \$\endgroup\$– Russell McMahon ♦Commented Aug 18, 2011 at 3:32
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\$\begingroup\$ *Luke: ... force ... \$\endgroup\$– Russell McMahon ♦Commented Aug 18, 2011 at 3:32
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Likely not, my advice would be to try what shipbuilders do for centuries: mount the compass on the frame and calibrate it so you know what true heading corresponds to each indicated.
