Hall sensor

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KJM
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Hall sensor

Post by KJM » Sat Jan 22, 2022 3:32 am

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?

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Roberthh
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Re: Hall sensor

Post by Roberthh » Sat Jan 22, 2022 7:18 am

esp32.hall_sensor()
But it is not very sensitive.

KJM
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Re: Hall sensor

Post by KJM » Sun Jan 23, 2022 1:21 am

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?

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Roberthh
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Re: Hall sensor

Post by Roberthh » Sun Jan 23, 2022 8:17 am

Sorry, I do not know that.

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pythoncoder
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Re: Hall sensor

Post by pythoncoder » Sun Jan 23, 2022 5:49 pm

Thermocouples need a specialised interface because the voltage they produce is tiny. They also need cold junction compensation. See this example board.
Peter Hinch
Index to my micropython libraries.

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