is it simply a case of coding voltage at pin A = Voltage at pin B?
I want to use an arduino to control where analogue audo signals are routed. Input them on one pin and output them on one of a choice of other pins.
I can't find much information on using mics as anything other than sensors.Obviously there needs to be some sort of amplifeier between the mic capsule itself and the Arduino.
But are the sensor boards like the KY-038 sufficient, and having got a voltage onto the Arduino, is it simply a case of coding voltage at pin A = Voltage at pin B?
I'm trying to build something a bit a like a multi-room intercom system.
The mics thefore don't need to be anything more than simple electret capsules.
Am I right in thinking what defines a telecoms relay (as linked to by CrossRoads) is one that operates two "switches" concurrently?