#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Change 0x27 if your address is different
const int buzzerPin = 9;
const int speedSensorPin = A0; // Analog pin for speed sensor
const int speedLimit = 100; // Set speed limit (adjust based on your needs)

void setup() {
  pinMode(buzzerPin, OUTPUT);
  lcd.begin();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Speed: ");
}

void loop() {
  int sensorValue = analogRead(speedSensorPin);
  int speed = map(sensorValue, 0, 1023, 0, 200); // Adjust the range as needed

  // Display speed on LCD
  lcd.setCursor(7, 0);
  lcd.print(speed);
  lcd.print(" km/h");

  // Check if speed exceeds limit
  if (speed > speedLimit) {
    digitalWrite(buzzerPin, HIGH); // Turn on buzzer
  } else {
    digitalWrite(buzzerPin, LOW); // Turn off buzzer
  }

  delay(500); // Update every half second
}
 // put your setup code here, to run once: