I recently purchased one of these modules. It plays fine, except none of the control functions appear to work. (Pushbuttons) The module starts playing on power up as expected, but the LED wired as shown in instructions is blinking while playing. (Should be On solid if I read the directions correctly) The resistors supplied were used in this initial power up with N.O. buttons. (Final application will replace the buttons with dry relay contacts but I wanted to keep initial tests simple) Pushing the buttons has no effect on operation; it plays to the end of the single MP3 file on the USB Flashdrive, then simply starts over. It is operating directly from a 5V source, filtered and regulated. Am I overlooking something, or does this sound like a problem with the module?
The final project consists of a mono program on one channel which is sent to a speaker. the other channel is sent to a tone decoder which closes the relay contacts for 2 seconds to put the module in its “pause” state. A second pulse will at an indeterminate time be sent to put it back in “Play” when the program is requested. the sequence repeats as needed until the end of the program (each operation only plays a portion of the total program. At the end of the file a second tone initiates a power cycle which resets the module, followed by a single pulse putting it in “pause”. The cycle then repeats. Any help appreciated !