unsigned long previousMillis_r;
unsigned long previousMillis_y;
unsigned long previousMillis_g;
const unsigned long interval_r = 500;
const unsigned long interval_y = 800;
const unsigned long interval_g = 300;


bool red = false;
bool yellow = false;
bool green = false;

void setup() {
  // put your setup code here, to run once:
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  unsigned long currentMillis = millis();
  // интервал между сигналами
  if(currentMillis - previousMillis_r >= interval_r)
  {
    previousMillis_r = currentMillis;
    digitalWrite(10, !digitalRead(10));
    // if (red) {
    //   red = false;
    //   digitalWrite(10, LOW);  
    // }
    // else{
    //   red = true;
    //   digitalWrite(10, HIGH);
    // }
  }

  if(currentMillis - previousMillis_y >= interval_y)
  {
    previousMillis_y = currentMillis;
    if (yellow) {
      yellow = false;
      digitalWrite(11, LOW);  
    }
    else{
      yellow = true;
      digitalWrite(11, HIGH);
    }
  }

  if(currentMillis - previousMillis_g >= interval_g)
  {
    previousMillis_g = currentMillis;
    if (green) {
      green = false;
      digitalWrite(12, LOW);  
    }
    else{
      green = true;
      digitalWrite(12, HIGH);
    }
  }

}