Hello,
I have a hall effect sensor v2 which has a baseline signal around -350mT. It reacts ok to the presence of a magnet (north and south), but gives a non zero signal when nothing is around. It gives the same signal (and same polarity) when I move it around and I flip it, so it is not reacting to an ambiant magnetic field. It looks like it is itself magnetized and detects its own magnetic field. I tried a few other hall effect sensors, one is giving 0 as a baseline, another has something like -300mT.
Is there somehting that can be done to recalibrate the sensor? Should I request a replacement for defective items?
Thank you for your help.