I have a horizontal MEAS vibration sensor set up to my analogue input at the moment which lights a digital LED when vibrations over a certain threshold are detected. I now want to expand this project further in to allowing the arduino UNO to wake upon a vibration and light the LED giving better battery consumption from a 9V.
I have read that the arduino wake libraries via interrupts require digital and not analogue inputs is this correct? At the moment my MEAS sensor is going directly in to A0 and GND, what changes would I need to make if I were to move this over to digital? I know the arduino already has an analogue to digital converter but I assume this is bypassed if I want to use an interrupt.