└── README.md


/README.md:
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  1 | # SMART-CAR-PARKING-SYSTEM
  2 | #include <EEPROM.h>       // For storing the slot status
  3 | #include <LiquidCrystal.h> // For the LCD display
  4 | #include <SoftwareSerial.h> // For GSM module communication
  5 | 
  6 | // Define LCD pins
  7 | LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
  8 | 
  9 | // Define pins for ultrasonic sensors
 10 | const int trigPin1 = 9;  
 11 | const int echoPin1 = 8;
 12 | const int trigPin2 = 7;
 13 | const int echoPin2 = 6;
 14 | 
 15 | // Define pins for LEDs
 16 | const int ledPin1Green = 10;
 17 | const int ledPin1Red = 13;
 18 | const int ledPin2Green = A1;
 19 | const int ledPin2Red = A2;
 20 | 
 21 | // GSM module pins and serial communication
 22 | SoftwareSerial gsmSerial(2, 3);  // RX, TX for GSM
 23 | 
 24 | // Parking slot distance threshold
 25 | const int distanceThreshold = 10;
 26 | 
 27 | // Function to measure the distance using ultrasonic sensor
 28 | long measureDistance(int trigPin, int echoPin) {
 29 |   digitalWrite(trigPin, LOW);
 30 |   delayMicroseconds(2);
 31 |   digitalWrite(trigPin, HIGH);
 32 |   delayMicroseconds(10);
 33 |   digitalWrite(trigPin, LOW);
 34 |   
 35 |   long duration = pulseIn(echoPin, HIGH);
 36 |   long distance = (duration * 0.034) / 2;
 37 |   return distance;
 38 | }
 39 | 
 40 | // Send SMS via GSM module
 41 | void sendSMS(const char* message) {
 42 |   gsmSerial.println("AT+CMGF=1");  // Set GSM to text mode
 43 |   delay(100);
 44 |   gsmSerial.println("AT+CMGS=\"+91xxxxxxxxxx\""); // Your phone number
 45 |   delay(100);
 46 |   gsmSerial.println(message);
 47 |   delay(100);
 48 |   gsmSerial.write(26); // End the SMS
 49 |   delay(1000);
 50 | }
 51 | 
 52 | void setup() {
 53 |   // Initialize serial communication
 54 |   Serial.begin(9600);
 55 |   gsmSerial.begin(9600);
 56 |   
 57 |   // Initialize LCD
 58 |   lcd.begin(16, 2);
 59 |   
 60 |   // Set the pins for the ultrasonic sensors, LEDs
 61 |   pinMode(trigPin1, OUTPUT);
 62 |   pinMode(echoPin1, INPUT);
 63 |   pinMode(trigPin2, OUTPUT);
 64 |   pinMode(echoPin2, INPUT);
 65 |   
 66 |   pinMode(ledPin1Green, OUTPUT);
 67 |   pinMode(ledPin1Red, OUTPUT);
 68 |   pinMode(ledPin2Green, OUTPUT);
 69 |   pinMode(ledPin2Red, OUTPUT);
 70 |   
 71 |   // Display initial message on LCD
 72 |   lcd.setCursor(0, 0);
 73 |   lcd.print("Parking System");
 74 |   delay(2000);
 75 |   lcd.clear();
 76 | }
 77 | 
 78 | void loop() {
 79 |   // Measure distance for parking slot 1
 80 |   long distance1 = measureDistance(trigPin1, echoPin1);
 81 |   long distance2 = measureDistance(trigPin2, echoPin2);
 82 | 
 83 |   // Check slot 1 availability and update LEDs
 84 |   if (distance1 < distanceThreshold) {
 85 |     digitalWrite(ledPin1Red, HIGH);
 86 |     digitalWrite(ledPin1Green, LOW);
 87 |     lcd.setCursor(0, 0);
 88 |     lcd.print("Slot 1: OCCUPIED ");
 89 |     EEPROM.write(0, 1);  // Store slot 1 status
 90 |   } else {
 91 |     digitalWrite(ledPin1Green, HIGH);
 92 |     digitalWrite(ledPin1Red, LOW);
 93 |     lcd.setCursor(0, 0);
 94 |     lcd.print("Slot 1: AVAILABLE");
 95 |     EEPROM.write(0, 0);  // Store slot 1 status
 96 |   }
 97 | 
 98 |   // Check slot 2 availability and update LEDs
 99 |   if (distance2 < distanceThreshold) {
100 |     digitalWrite(ledPin2Red, HIGH);
101 |     digitalWrite(ledPin2Green, LOW);
102 |     lcd.setCursor(0, 1);
103 |     lcd.print("Slot 2: OCCUPIED ");
104 |     EEPROM.write(1, 1);  // Sto
105 | 


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