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Hall sensor
Posted: Sat Jan 22, 2022 3:32 am
by KJM
The
https://www.espressif.com/sites/default ... ual_en.pdf mentions an inbuilt magnetic field sensor on P623. Does anyone know if it's accessible via upython?
Re: Hall sensor
Posted: Sat Jan 22, 2022 7:18 am
by Roberthh
esp32.hall_sensor()
But it is not very sensitive.
Re: Hall sensor
Posted: Sun Jan 23, 2022 1:21 am
by KJM
Do you know a way to open the hall switch in fig146 & connect pad_in[7:0] to the low noise amp instead? Would the amp be any good for thermocouples or is the hall insensitive because the amp is crap?
Re: Hall sensor
Posted: Sun Jan 23, 2022 8:17 am
by Roberthh
Sorry, I do not know that.
Re: Hall sensor
Posted: Sun Jan 23, 2022 5:49 pm
by pythoncoder
Thermocouples need a specialised interface because the voltage they produce is tiny. They also need cold junction compensation. See
this example board.