led to music?

Ok... i have been looking into this for the past month tried to use a TIP31 transistor to make my led light strips flash to music in my car by using my sub amplifier as an audio out source...... and it would not work so i was wondering if you someone could help me out to make a box that would allow for audio in from my amplifier that would have a circuit that would perform the task of making my led light strips flash to my music. thanks. 

You need to make an opamp comparator with a peak detector. Then any base line audio will flash the LEDs. You don't want to connect the circuit to the output of an amp. The 2 videos below will walk you though it all.

dallyski (author)  mpilchfamily5 years ago
thank you !
If mpilchfamily answered your question, do you think you could click on the blue button so that your question shows up as "answered" on the main page? ;-)