FinalProjectCode.ino

#include <LiquidCrystal.h>
#include <SoftwareSerial.h>
#include "TinyGPS++.h"
#define RXPin 10
#define TXPin 13
#define GPSBaud 9600
#define ConsoleBaud 9600
                                                                                      //ss - GPS, serial - GSM
// Define the pins connected to the SIM800L module
#define RX_PIN 2
#define TX_PIN 3

// Create a software serial object to communicate with the SIM800L
SoftwareSerial serial(RX_PIN, TX_PIN);

// Function to send an AT command and wait for a response
String sendAT(String cmd) {
  serial.println(cmd);
  delay(1000);
  String response = "";
  while (serial.available()) {
    response += char(serial.read());
  }
  return response;
}



// The serial connection to the GPS device
SoftwareSerial ss(RXPin, TXPin);
// The TinyGPS+ object
TinyGPSPlus gps;

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
float sensorValue;
const int sensorPin = A0;
const int buzzerpin = A5;

int motor1pin1 = 13;
int motor1pin2 = 10;

int motor2pin1 = 9;
int motor2pin2 = 8;

String message;

void setup() {
  lcd.begin(16, 2);
  Serial.begin(ConsoleBaud);
  ss.begin(GPSBaud);
  serial.begin(GPSBaud);

  Serial.print("MQ3 warming up!");
  pinMode(sensorPin, INPUT);

  // put your setup code here, to run once:
  pinMode(motor1pin1, OUTPUT);
  pinMode(motor1pin2, OUTPUT);
  pinMode(motor2pin1, OUTPUT);
  pinMode(motor2pin2, OUTPUT);
  pinMode(buzzerpin, OUTPUT);
  digitalWrite(buzzerpin, LOW);
}

void loop() {

  while (ss.available() > 0){
    gps.encode(ss.read());
  }
  // Let's display the new location and altitude
  // whenever either of them have been updated.
  //if (gps.location.isUpdated() || gps.altitude.isUpdated())
  //{
    Serial.print("Location: ");
    Serial.print(gps.location.lat(), 6);
    Serial.print(",");
    Serial.print(gps.location.lng(), 6);
    Serial.print(" Altitude: ");
    Serial.println(gps.altitude.meters());
  //}

  //sensorValue = 280;
  // put your main code here, to run repeatedly:  
  
  sensorValue = analogRead(sensorPin);
  Serial.print("Sensor Value: ");
  Serial.println(sensorValue);
  Serial.print("\n");
  if(sensorValue<250){
    digitalWrite(buzzerpin, LOW); 
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.clear();
    lcd.print("Sober");
    lcd.setCursor(0, 1);
    lcd.print(sensorValue);
    Serial.print("You good,\n ");
    digitalWrite(motor1pin1, HIGH);
    digitalWrite(motor1pin2, LOW);

    digitalWrite(motor2pin1, HIGH);
    digitalWrite(motor2pin2, LOW);
    delay(1000);

    digitalWrite(motor1pin1, LOW);
    digitalWrite(motor1pin2, HIGH);

    digitalWrite(motor2pin1, LOW);
    digitalWrite(motor2pin2, HIGH);
    
    delay(1000);
  } else if(sensorValue>250){
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Drunk!!!");
    lcd.setCursor(0, 1);
    lcd.print(sensorValue);
    Serial.print("\nYou drunk!, ");
    message = "ALERT! DRUNK DRIVER";
    Serial.print(sensorValue);
    digitalWrite(buzzerpin, HIGH);
    digitalWrite(motor2pin1, LOW);
    digitalWrite(motor2pin2, LOW);
    delay(1000);

     String response = sendAT("AT");
  if (response == "OK") {
    Serial.println("SIM800L is ready");
  } else {
    Serial.println("Error: SIM800L not ready");
    return;
  }
   // Define the phone number and message
  String phoneNumber = "+919021292137";  // Replace with recipient's number

   // Send SMS command
  String command = "AT+CMGS=\"" + phoneNumber + "\"\r\n";
  sendAT(command);
  delay(1000);  // Wait for module to process

  // Send the message content
  serial.print(message);
  delay(1000);  // Wait for message to be sent

  // Check SMS sending status
  response = sendAT("AT+CMSS=1");
  if (response == "+CMSS: 1") {
    Serial.println("SMS sent successfully");
  } else {
    Serial.println("Error: SMS sending failed");
  }

  // Delay between messages (optional)
  Serial.print("\n");
  delay(10000);
  
  } 

 


}