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);


}

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

  analogWrite(19,100);  //red
  analogWrite(21,100);  //blue
  analogWrite(18,100);   //yellow
}