// Define pins for each sensor and LED
const int trigPin = 9;
const int echoPin = 10;
const int temperaturePin = A1;
const int ultrasonicLEDPin = 3;
const int temperatureLEDPin = 6;

//const int soilMoistureLEDPin = 5;

void setup() {
  // Initialize Serial Monitor
  Serial.begin(9600);
  
  // Set pin modes
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(temperaturePin, INPUT);
  pinMode(ultrasonicLEDPin, OUTPUT);
  pinMode(temperatureLEDPin, OUTPUT);

}

void loop() {
  // Read and print Ultrasonic sensor data and control LED
  long duration, distance;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  distance = (duration / 2) / 29.1;
  Serial.print("Ultrasonic Sensor: Distance = ");
  Serial.print(distance);
  Serial.println(" cm");
  
  if (distance < 10) {
    digitalWrite(ultrasonicLEDPin, HIGH);
  } else {
    digitalWrite(ultrasonicLEDPin, LOW);
  }

  const float BETA = 3950; 
  int analogValue = analogRead(A0);
  float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

  Serial.print("Temperature Sensor: Value = ");
  Serial.print(celsius);
  Serial.println(" C");


  if (celsius > 30) {
    digitalWrite(temperatureLEDPin, HIGH);
  } else {
    digitalWrite(temperatureLEDPin, LOW);
  }
  // Add a delay between readings
  delay(1000);
}