Hello all,
I need some help with my detector circuit. I am trying to obtain seperate pulse sounds as my 3 LED's light up. I am using a voltage divider circuit and as voltage decreases my lm324 will output to a low for one LED to come on (which is tied to 9Volts). As the voltage being sensed by other lm324's (+) pin continues to decrease, their output produces their LED's to turn on.
NOW here is my question. How can I use my 555 timer to produce different tones or pulse lengths for each LED being turned on? I only want to use one speaker in the circuit.
I need some help with my detector circuit. I am trying to obtain seperate pulse sounds as my 3 LED's light up. I am using a voltage divider circuit and as voltage decreases my lm324 will output to a low for one LED to come on (which is tied to 9Volts). As the voltage being sensed by other lm324's (+) pin continues to decrease, their output produces their LED's to turn on.
NOW here is my question. How can I use my 555 timer to produce different tones or pulse lengths for each LED being turned on? I only want to use one speaker in the circuit.