Funny thing - still questioning the scale of measured readings of the Hall sensor - I discovered, that my USB connection runs at 7.0 Volt - not 5 Volt as it is supposed to be - and the 3.3V reference had approx. 4.8V ! I cross checked my ADC readings with a voltmeter and I must admit that all my ADC...

So, as an answer to the original question by @rin67630 and related to my previous posts - here I present a calibration measurement just performed today. Approaching and removing a permanent magnet shows a quite remarkable signal change. I measured the magnetic field strength of the permanent magnet ...

Hello again, I was still wondering where the hall sensor is located and so I was looking for a simple way to find it out. So here is my solution and how you can verify this by yourself: 1) Straigthen out a paperclip to form a straight metal rod. 2) Magnetize the rod by pulling it along a strong magn...

I just tested the default program for reading the Hall sensor (see https://github.com/espressif/arduino-esp32/blob/master/libraries/ESP32/examples/HallSensor/HallSensor.ino) ... I agree, very noisy. But if you average over, let's say, 1000 measurements then the readings are very stable and reliable....