I was inspired by the “ Peachy Printer “ project to use an audio signal to control a switch. The Peachy Printer project used the headphone jack and audio signal to control the angle of a mirror, which aimed a laser for an SLA 3D Printer. To be clear, My goal is to record tones on an mp3 and in turn have those tones flip a switch to control a motor or magnet. I would then be able to use one side of a stereo track for sound and the other side to synchronize lights or motion. I know nothing of electronics but bought some parts on ebay to try to achieve this objective. I understand that the audio signal is alternating current. I bought some little diode that sounded like it could convert alternating to direct ( although, now that I have them they have no label and I cant find the info on it.) I tried to run the signal through this diode to a little relay switch. I also tried amplifying the signal before doing this. I was unable to get any response from the relay switch. Does anyone have any thoughts on how this might be possible, and a recommendations for specific parts and assembly.
Thank you so much,
Benju
Thank you so much,
Benju