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Added audio tag.
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Nick Gammon ♦
Nick Gammon ♦
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I have an amplifier circuit for a microphone.The output of the circuit(the microphone signal amplified) is connected to the arduino A0 .Now the circuit works(I think ,the output voltage is 4.30 V) and the arduino serial monitor output 875 874... fluctuates with one or 1,2 or more points.The problem is that this value just goes down from 875....800.... . Is

Is it a correct value?(circuit taken from here http://wiring.org.co/learning/basics/microphone.html)

EDIT: If I put my finger on it the values go up a bit like 792 ,794,800

I have an amplifier circuit for a microphone.The output of the circuit(the microphone signal amplified) is connected to the arduino A0 .Now the circuit works(I think ,the output voltage is 4.30 V) and the arduino serial monitor output 875 874... fluctuates with one or 1,2 or more points.The problem is that this value just goes down from 875....800.... . Is it a correct value?(circuit taken from here http://wiring.org.co/learning/basics/microphone.html)

EDIT: If I put my finger on it the values go up a bit like 792 ,794,800

I have an amplifier circuit for a microphone.The output of the circuit(the microphone signal amplified) is connected to the arduino A0 .Now the circuit works(I think ,the output voltage is 4.30 V) and the arduino serial monitor output 875 874... fluctuates with one or 1,2 or more points.The problem is that this value just goes down from 875....800.... .

Is it a correct value?(circuit taken from here http://wiring.org.co/learning/basics/microphone.html)

EDIT: If I put my finger on it the values go up a bit like 792 ,794,800

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Diana Lc
Diana Lc
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Microphone input into Arduino uno R3

I have an amplifier circuit for a microphone.The output of the circuit(the microphone signal amplified) is connected to the arduino A0 .Now the circuit works(I think ,the output voltage is 4.30 V) and the arduino serial monitor output 875 874... fluctuates with one or 1,2 or more points.The problem is that this value just goes down from 875....800.... . Is it a correct value?(circuit taken from here http://wiring.org.co/learning/basics/microphone.html)

EDIT: If I put my finger on it the values go up a bit like 792 ,794,800