Re: How to make a LED flash together with the music BPM


<gustavo.x@xxxxxxxxxxxx> wrote in message
news:1175236274.587082.240320@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi, i was wanting to construct a simple circuit where a led would
flash together with a Music BPM. Does anyone knows how it can be done.
And what will i need to buy?
OK
Thanks...


Just a simple idea, so I am not sure but you'd probably need to pass the
signal through a Low Pass filter since the beat is at low frequencies of the
audio spectrum and then you could feed it to a BJT that controls the current
passing through the LED.

Regards




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