I'm getting somewhat strange behavior from the ADC on my arduino, I will try my best to explain. I made a microphone amplifier circuit that gives a peak-to-peak of 0 to 5 V with a DC offset of 2.5 V. This signal is fed into the Arduino ADC. I'm building a VU meter, so based on the ADC reading, some …

Odd behavior on ADC, please help!

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