VU Meter

Questions
1

Probably a easy one for the pros. I’m tinkering around making VU meter with two strips 25 each, ESP32 and INMP441 mic. I would like to have the two strips basically be a left channel and a right channel. I have them setup as two segments but not quite happy with the performance. Can and should I run the strips on separate pins and seeing how the mic is stereo is there a way to separate the channels? Or is there a obvious simple way that I’ve missed?
While on the subject is it possible to use a 3.5mm input like a PCM5102 instead of the mic? I rebuilt a mid century stereo cabinet and have two ESP’s running so I can have two channels but now that I’m learning more I’m thinking I could just have one if I can seperate the left and right channels.

2

Audioreactive AFAIK only supports left channel.
You can write a custom usermod to handle both channels. How? That’s up to you.

3

hi @bobbybeard
you can use beatdetect as a base or simplier get the ddf signal hacked like

import ddf.minim.*;
import processing.serial.*;
import cc.arduino.*;

Arduino arduino;
Minim minim;
AudioInput in; 

arduino = new Arduino(this, Arduino.list()[0], 57600);
minim = new Minim(this);
  
  in = minim.getLineIn(Minim.STEREO, 1050);

  for(int i = 0; i < in.bufferSize(); i++)
{
    leftSample = in.left.get(i);
    rightSample = in.right.get(i);
}
  in.close();
  minim.stop();
  super.stop();