Hall sensor readings

temponit
Posts: 3
Joined: Mon Jan 13, 2020 9:20 am

Hall sensor readings

Postby temponit » Mon Jan 13, 2020 9:33 am

I have several ESP32-WROOM-32В. Vref of ADC is factory calibrated. hall_sensor_read () returns a value from -19 to +56 (depends of module ).
The question is why are the zero values (only Earth magnetic field) ​​different on this modules?
What are the measurement units of hall_sensor_read (), zero bias and sensivity of hall sensor?

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