const int pingpin = 27;
const int echopin =26;
const int buzz =25;
void setup() {
  Serial.begin(115200);
  pinMode(pingpin, OUTPUT);
  pinMode(echopin, INPUT);
  pinMode(buzz, OUTPUT);
}

void loop() {
  long duration;
  float inches, cm;

  // Send ultrasonic pulse
  digitalWrite(pingpin, LOW);
  delayMicroseconds(2);
  digitalWrite(pingpin, HIGH);
  delayMicroseconds(10);
  digitalWrite(pingpin, LOW);

  // Measure the duration of the echo pulse
  duration = pulseIn(echopin, HIGH);

  // Check if the sensor is out of range
  if (duration == 0) {
    Serial.println("Out of range");
    digitalWrite(buzz, LOW);
    return;
  }

  // Convert duration to inches and centimeters
  inches = microsecondsToInches(duration);
  cm = microsecondsToCentimeters(duration);

  // Activate buzzer if an object is closer than 100 cm
  if (cm < 100) {
    digitalWrite(buzz, HIGH);
  } else {
    digitalWrite(buzz, LOW);
  }

  // Print measurements to the Serial Monitor
  Serial.print(inches);
  Serial.print(" in, ");
  Serial.print(cm);
  Serial.println(" cm");

  delay(100);
}

// Function to convert duration to inches
float microsecondsToInches(long microseconds) {
  return microseconds / 74.0 / 2.0;
}

// Function to convert duration to centimeters
float microsecondsToCentimeters(long microseconds) {
  return microseconds / 29.0 / 2.0;
}


// Define the servo object
ServoESP32 myServo;

// Define the servo pin
#define SERVO_PIN  18  // Change based on your wiring

void setup() {
    Serial.begin(115200);
    
    // Attach the servo to a pin with a frequency of 50Hz
    myServo.attach(SERVO_PIN, 500, 2400);  // 500-2400 µs pulse width range

    Serial.println("Servo Ready!");
}

void loop() {
    // Move servo to 0 degrees
    myServo.write(0);
    Serial.println("Servo at 0°");
    delay(1000);

    // Move servo to 90 degrees
    myServo.write(90);
    Serial.println("Servo at 90°");
    delay(1000);

    // Move servo