I'm trying to get a 3.3v constant signal to trigger a Mp3 file to play. My plan is a mp3 module board, a 3w 4ohm speaker, and potentially a contactor to press play on the Mp3 board, the problem is, a short press is "play" a long press is settings or something..
Looking for a contactor that upon receiving signal snaps closed/open and then back? Or any other way to accomplish the above.
Looking for a contactor that upon receiving signal snaps closed/open and then back? Or any other way to accomplish the above.