I'm wondering if the Sensitive Audio Detector - http://www.allaboutcircuits.com/textbook/experiments/chpt-4/sensitive-audio-detector/ - would work in reverse? Here's the situation I'm working with.
I want to replace a sound impact sensor (a little microphone that completes a circuit at a sufficiently high volume, and looks like this: http://elcodis.com/photos/32/57/325729/ma300dp_sml.jpg) with a 1/8" mono audio jack, so I can more finely control the response of an audio-triggered set of LED lights. The lights change whenever the circuit is completed - I can just short across the two solder points on the board to make it change. I can't just do a direct swap of the audio jack ( http://www.hiviz.com/kits/images/components/stereo_jack_123_med.jpg ) onto the board, because there isn't something built in to complete the circuit at a specific volume threshold. As soon as both ends are plugged in, the circuit's complete and the lights start going crazy.
The Sensitive Audio Detector lesson looks a lot like what I'm hoping to do, but instead of the signal coming from the test leads, it would come from the 1/8" plug. Including a potentiometer is a plus, to adjust the sensitivity of the lights.
If someone can let me know if I'm on the right track here, or if I'm not, to point me down the right path, it would be greatly appreciated. If this is the wrong forum to ask this question, please point me to the right one.
Cheers!
I want to replace a sound impact sensor (a little microphone that completes a circuit at a sufficiently high volume, and looks like this: http://elcodis.com/photos/32/57/325729/ma300dp_sml.jpg) with a 1/8" mono audio jack, so I can more finely control the response of an audio-triggered set of LED lights. The lights change whenever the circuit is completed - I can just short across the two solder points on the board to make it change. I can't just do a direct swap of the audio jack ( http://www.hiviz.com/kits/images/components/stereo_jack_123_med.jpg ) onto the board, because there isn't something built in to complete the circuit at a specific volume threshold. As soon as both ends are plugged in, the circuit's complete and the lights start going crazy.
The Sensitive Audio Detector lesson looks a lot like what I'm hoping to do, but instead of the signal coming from the test leads, it would come from the 1/8" plug. Including a potentiometer is a plus, to adjust the sensitivity of the lights.
If someone can let me know if I'm on the right track here, or if I'm not, to point me down the right path, it would be greatly appreciated. If this is the wrong forum to ask this question, please point me to the right one.
Cheers!