int vin = A2;
int ledr = 0;
int ledy = 1;
int ledg = 2;

void setup() {
  pinMode(vin, INPUT);
  pinMode(ledr, OUTPUT);
  pinMode(ledy, OUTPUT);
  pinMode(ledg, OUTPUT);
}

void loop() {

float readvin = (analogRead(vin)) * 0.0293255131964809;

  if ((readvin > 0) && (readvin <= 11.5)) {
    vrlow();
  }

  if ((readvin > 11.5) && (readvin <= 12.5)) {
    vrmid();
  }

  if (readvin > 12.5) {
    vrhi();
  }
}


void vrlow() {
digitalWrite(ledr, HIGH);
delay(500);
digitalWrite(ledr, LOW);
delay(500);
}

void vrmid() {
digitalWrite(ledy, HIGH);
delay(500);
digitalWrite(ledy, LOW);
delay(3000);
}

void vrhi() {
digitalWrite(ledg, HIGH);
delay(500);
digitalWrite(ledg, LOW);
delay(6000);
}