I want to make a doorbell detector with a microcontroller.
I do not want to open up the doorbell wire. Is it possible to make a little coil around the doorbell wire and connect this to the analog input to detect voltage regulations when the doorbell is pressed?
The doorbell we have, is a 12V ding dong bell.
I do not want to open up the doorbell wire. Is it possible to make a little coil around the doorbell wire and connect this to the analog input to detect voltage regulations when the doorbell is pressed?
The doorbell we have, is a 12V ding dong bell.