#define TRIG_PIN_1 9
#define ECHO_PIN_1 8
#define TRIG_PIN_2 7
#define ECHO_PIN_2 6

void setup() {
  Serial.begin(9600);
  
  pinMode(TRIG_PIN_1, OUTPUT);
  pinMode(ECHO_PIN_1, INPUT);
  
  pinMode(TRIG_PIN_2, OUTPUT);
  pinMode(ECHO_PIN_2, INPUT);
}

void loop() {
  // Sensor 1
float duration1, distance1;
  digitalWrite(TRIG_PIN_1, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN_1, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN_1, LOW);
  
  duration1 = pulseIn(ECHO_PIN_1, HIGH);
  distance1 = duration1 * 0.034 / 2; // Convert to distance in cm
  
  // Sensor 2
  float duration2, distance2;
  digitalWrite(TRIG_PIN_2, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN_2, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN_2, LOW);
  
  duration2 = pulseIn(ECHO_PIN_2, HIGH);
  distance2 = duration2 * 0.034 / 2; // Convert to distance in cm
  
  // Print the results
  Serial.print("Sensor 1: ");
  Serial.print(distance1);
  Serial.println(" cm");
  
  Serial.print("Sensor 2: ");
  Serial.print(distance2);
  Serial.println(" cm");
  
  delay(1000); // Wait for a second before taking next readings
}