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Topic: Potentiometer reading with ac signal (Read 867 times) previous topic - next topic


So I'm building an amp and I want an LCD screen to display the amount of volume bass and treb (see picture). I know I could just look at how much the pots are turned but, I think it will look really cool and I want to do it! So my problem is that the pots will have an audio signal going through them so reading the value of the pots isn't so trivial. Any ideas on how I can translate the pot's resistance to a bar graph on the LCD?


Use ganged pots, one for the volume control, one for the volume display.

Use the pots to control a digital potentiometer, keep track of how much its been commanded up/down.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

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