Pages: [1]   Go Down
Author Topic: Potentiometer reading with ac signal  (Read 404 times)
0 Members and 1 Guest are viewing this topic.
Georgia
Offline Offline
Newbie
*
Karma: 0
Posts: 7
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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?


* amp.png (31.07 KB, 1024x768 - viewed 8 times.)
Logged

I'm a Ramblin Wreck from Georgia Tech and a Helluva Engineer!

Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 444
Posts: 23861
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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.
Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Pages: [1]   Go Up
Jump to: