Is there a way to connect & disconnect a speaker w/ out using a relay? If you know of a way please explain how it should be set up...
also is there an audio file type that that can go on an micro-SD card and when read has the same signal as a mic would with the same audio input?
Basically what I'm trying to do is send an audio file from a micro-SD card to the mic's connection on a 20-second record-and-playback module while it is recording, then trigger the recorded audio file then record a new and differant file from the SD card... THIS is the module I have