int sensor1Pin = A0;  
int sensor2Pin = A1;   // Change to A1 to read an analog sensor
int relay1Pin = 5;
int relay2Pin = 6;
int relay3Pin = 7;

void setup() {
  pinMode(sensor1Pin, INPUT);  // Set sensor1Pin as INPUT
  pinMode(sensor2Pin, INPUT);  // Set sensor2Pin as INPUT
  pinMode(relay1Pin, OUTPUT);
  pinMode(relay2Pin, OUTPUT);
  pinMode(relay3Pin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  int sensor1Value = analogRead(sensor1Pin);   
  int sensor2Value = analogRead(sensor2Pin);  // Read sensor 2 value

  Serial.print("Sensor 1: ");
  Serial.print(sensor1Value);
  Serial.print(" | Sensor 2: ");
  Serial.println(sensor2Value);  // Display the value of sensor 2

  if (sensor1Value <= 50 && sensor2Value > 300) {  // Assuming HIGH is defined as > 300
    digitalWrite(relay1Pin, HIGH);
    digitalWrite(relay2Pin, LOW);
    digitalWrite(relay3Pin, LOW);
    Serial.println("Relay 1 nyala (S1 <= 50, S2 HIGH)");
  } 
  else if (sensor1Value <= 300 && sensor2Value <= 500) {
    digitalWrite(relay1Pin, LOW);
    digitalWrite(relay2Pin, HIGH);
    digitalWrite(relay3Pin, LOW);
    Serial.println("Relay 2 nyala (S1 <= 300, S2 LOW)");
  } 
  else if (sensor1Value <= 500 && sensor2Value <= 300) {
    digitalWrite(relay1Pin, LOW);
    digitalWrite(relay2Pin, LOW);
    digitalWrite(relay3Pin, HIGH);
    Serial.println("Relay 3 nyala (S1 <= 500, S2 LOW)");
  } 
  else if (sensor1Value > 300 && sensor2Value <= 50) {
    digitalWrite(relay1Pin, HIGH);
    digitalWrite(relay2Pin, HIGH);
    digitalWrite(relay3Pin, HIGH);
    Serial.println("Semua relay nyala (S1 > 300, S2 LOW)");
  } 
  else {
    digitalWrite(relay1Pin, LOW);
    digitalWrite(relay2Pin, LOW);
    digitalWrite(relay3Pin, LOW);
    Serial.println("Semua relay mati");
  }

  delay(500);
}