re flash leds with sound in article aa kepler unh edu dmn kepler unh edu there s a seeker born every minute writes i m looking for a circuit that will flash an led on in response to the output from a walkman cassette player how could i do this i don t want it just to turn on i want it to strobe once so to speak per every beep i put on a cassette tape would it be better to use a circuit based on the volume of the beeps on the cassette or better for the leds to respond to a tone of a certain frequency is there any easy way to do either of these i m looking for the simplest circuit possible i guess what i m asking for is some sort of color organ but not quite let me trt to explain again i m going to have a pattern of beats or beeps on a cassette tape so on the tape you d hear beep pause beep pause beep pause etc with speed increasing as time goes on i want to synchronize an led probably two of them with the beeps on the cassette tape so the led with each beep would go on and off real quick generating a strobe light sort of effect the rapidity of the beeps on the tape would in turn effect the rapidity of the blinking of the leds and if there was no sound on the tape except for background his the leds would remain off please help thanks dana try looking in a magizine called radio electronics may issue page there is a circuit for a midi light controller there andy andy belville it s taken me a long time but i ve belvilad dunx ocs drexel edu fallen in love with a beautiful woman
