I have a pressure switch pad that has closed contacts when weight is applied. I want to trigger the MP3 Trigger to play the files on the SD card in any rotation when the contacts open. Is there a way to do this using this card?
For it to play upon ‘open’ circuit, you’d need to wire in a separate relay or similar it seems… and just use the ‘random’ function in the config app - see our guide https://learn.sparkfun.com/tutorials/mp … operation- and the guide form the MFR here https://www.robertsonics.com/mp3-trigger for more info on how it works