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Omnipolar hall sensor is good!

A project log for Cheap Ethernet IO extension board for smarthome

Cheap low power smarthome extension board with Ethernet/Modbus/1-wire/DMX512/Wifi connection

markbngmarkbng 05/15/2017 at 11:330 Comments

I had a problem with the latching hall sensors last friday. Today I got the omnipolar hall sensors from Farnell. And these sensors work as it should. So I will use these sensors in my door and windows frames. The output is high when no magnet is detected and is low when a magnetic field is present. I have used a high pull-up resistor (1M ohm), so the high level is only 4.5V.

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