G+_Armando Valladares Posted November 30, 2017 Share Posted November 30, 2017 Hello! I want to know if I can use an Arduino or a Raspberry Pi to turn on and off lights at specific points while there is an audio recording playing? I just need it to turn on my device that plays the audio and the lights need to turn on or off at specific points while he recording is playing. Can anyone help me or teach me how to do it? Thanks Link to comment Share on other sites More sharing options...
G+_John Sullivan Posted December 2, 2017 Share Posted December 2, 2017 If you can record (or re-record) your audio onto one channel of stereo (say the left channel), you could keep the right channel blank until you want to trigger the Arduino, and then have the Arduino only "listen" to the right channel. Link to comment Share on other sites More sharing options...
G+_Armando Valladares Posted December 3, 2017 Author Share Posted December 3, 2017 cosmic Ray can you please specify Link to comment Share on other sites More sharing options...
G+_John Sullivan Posted December 5, 2017 Share Posted December 5, 2017 Let's say you have a stereo recording of a song and you want to turn a light on or off at a certain point in the recording. I would use something like the free Audacity software to convert the two stereo tracks to two mono tracks, then remove one channel (either left or right) then add a new, blank one. Next I would record a tone on the blank channel (aka track) at the point where I want the Arduino to do something. Then I would remove the paper cone from an old speaker and glue the speaker coil to the Piezo detector in this example: https://www.arduino.cc/en/Tutorial/Knock Finally, run the tone channel wire to the modified speaker. Probably a lot simpler way to do it, but this is what came to mind Link to comment Share on other sites More sharing options...
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