#define red_ipin 23
#define green_ipin 22
#define blue_ipin 21
#define yellow_ipin 19

#define red_lpin 26
#define green_lpin 27
#define blue_lpin 14
#define yellow_lpin 12

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(red_ipin, INPUT);
  pinMode(green_ipin, INPUT);
  pinMode(blue_ipin, INPUT);
  pinMode(yellow_ipin, INPUT);
  pinMode(red_lpin, OUTPUT);
  pinMode(green_lpin, OUTPUT);
  pinMode(blue_lpin, OUTPUT);
  pinMode(yellow_lpin, OUTPUT);
  digitalWrite(red_lpin, LOW);
  digitalWrite(green_lpin, LOW);
  digitalWrite(blue_lpin, LOW);
  digitalWrite(yellow_lpin, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(red_lpin,digitalRead(red_ipin));
  digitalWrite(green_lpin,digitalRead(green_ipin));
  digitalWrite(blue_lpin,digitalRead(blue_ipin));
  digitalWrite(yellow_lpin,digitalRead(yellow_ipin));
  // delay(10); // this speeds up the simulation
}