void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  //Serial.println("Hello, ESP32!");

  pinMode(21, OUTPUT);
  pinMode(19, OUTPUT);
  pinMode(18, OUTPUT);

  pinMode(25, INPUT);
  pinMode(26, INPUT);
  pinMode(27, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation

  analogWrite(19,analogRead(25));  //red
  analogWrite(21,analogRead(26));  //blue
  analogWrite(18,analogRead(27));   //yellow
}