I have a device intended to sound an alarm and flash a bright light when it detects a phone ringing (so you can hear the phone ringing in noisy environments like workshops). I want to repurpose it to let me know when my woodshop dust bin is full.
The device came with a piezo transducer as a sensor. It connects to the main device via a small cable wires to a 1/8” jack with two contacts. For my project I’d like to figure out how to swap in a IR break-beam sensor instead. Any tips?