// copied from https://wokwi.com/projects/330112801381024338
// and https://docs.wokwi.com/chips-api/analog
// chip extended to bring in an analog/PWM input and smooth it out with a
// exponential filter.

const byte out_pin = 11;
const byte pot_pin =A0;

void setup() {
  Serial.begin(115200);
  pinMode(A2, INPUT);
  pinMode(out_pin,OUTPUT);
  analogWrite(out_pin,0);
}

void loop() {
  static int last_pot = -1;
  int new_pot = analogRead(pot_pin);
  if(new_pot != last_pot){
    last_pot = new_pot;
    analogWrite(out_pin,new_pot/4);
    //Serial.print(new_pot);
  }
  Serial.print("PWMAnalogToBreakout:");
  Serial.print(new_pot);
  Serial.print(" AnalogFromBreakout:");
  Serial.println(analogRead(A2));
  delay(100);
}