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Well, if you connect your guitar (or bass) and play you will see that the signal does not vary much, this is normal, I think that its due to the fast variation that is not reflected in the serial port speed (which is relatively slow)- is such a small resolution common?
I dont think so, using 100nF with have a low pass filter of 15Hz (100K res + 100n cap), using a 500nf (or 470nF) the cut off frequency would be around 3Hz, allowing more low freqs harmonics.- would swapping the 0.5 uf film capacitors back to 0.1 increase the resolution?
The ADCs are 12 bits, if you print the value through the serial port you should be able to see the whole set of values, but again if you just plug your instrument would look like you dont have much variation.- or is the small resolution caused by something different?
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