---

const int PIN_RED = 2;
const int PIN_GREEN = 3;
const int PIN_YELLOW = 4;
const int PIN_PHOTO = A0;

int sensorValue = 0;
int percent = 0;

void setup() {
  Serial.begin(9600);
  pinMode(PIN_RED, OUTPUT);
  pinMode(PIN_GREEN, OUTPUT);
  pinMode(PIN_YELLOW, OUTPUT);
}

void loop() {
  sensorValue = analogRead(PIN_PHOTO);
  percent = map(sensorValue, 0, 1023, 0, 100);

  Serial.print("Датчик: ");
  Serial.print(sensorValue);
  Serial.print(" -> ");
  Serial.print(percent);
  Serial.println("%");

  digitalWrite(PIN_RED, LOW);
  digitalWrite(PIN_GREEN, LOW);
  digitalWrite(PIN_YELLOW, LOW);

  if (percent < 30) {
    digitalWrite(PIN_RED, HIGH);
  } else if (percent < 60) {
    digitalWrite(PIN_GREEN, HIGH);
  } else {
    digitalWrite(PIN_YELLOW, HIGH);
  }

  delay(150);
}