3 ms·
Why would you use a hall effect sensor at all, or a dpst for that matter? You just need two resistors. Just tap the dc leg between the bell and the chime into
by tofof 2y ago
Why would you use a hall effect sensor at all, or a dpst for that matter? You just need two resistors.
Just tap the dc leg between the bell and the chime into a voltage divider - for a 16V doorbell to a 3.3V esp32 io pin, r1=15k and r2=3.3k is exact - and you're done.
- rahimnathwani 2y agoThanks. This makes much more sense.
- tzs 2y agoHow common is DC in home doorbell systems? Most doorbell wiring diagrams I've seen in the US show systems that appear to be all AC.