1) A Smart reverse system for vehicles built with Arduino! Making parking safer and easier. 🚗🔧📟 

#Arduino #SmartTech #Engineering #Innovation


Hardware : 

1. Arduino Uno or any other Microcontroller 
2. Ultrasonic Sensor 
3. Breadboard and Jumper Wires 
4. Gear Motor 
5. Motor Drive 
6. Buzzer 
7. LED  

Code :

#define TRIGGER_PIN 9 
#define ECHO_PIN 10 
 #define MOTOR_PIN 6 
 #define BUZZER_PIN 7 
 #define LED_PIN 8 

 void setup() {
 pinMode(TRIGGER_PIN, OUTPUT); 
 pinMode(ECHO_PIN, INPUT); 
 pinMode(MOTOR_PIN, OUTPUT); 
 pinMode(BUZZER_PIN, OUTPUT); 
 pinMode(LED_PIN, OUTPUT); 
 Serial.begin(9600); 
} 

void loop() { 
long duration, distance;
digitalWrite(TRIGGER_PIN, LOW); 
delayMicroseconds(2); 
 digitalWrite(TRIGGER_PIN, HIGH); 
 delayMicroseconds(10); 
 digitalWrite(TRIGGER_PIN, LOW); 

 duration = pulseIn(ECHO_PIN, HIGH); 
 distance = duration * 0.034 / 2; 
 Serial.print("Distance : "); 
 Serial.print(distance); 
 Serial.println("cm"); 

 if (distance < 20) { 
 digitalWrite(MOTOR_PIN, LOW); 
 digitalWrite(BUZZER_PIN, HIGH); 
 digitalWrite(LED_PIN, HIGH); 
 } 
else { 
 digitalWrite(MOTOR_PIN, HIGH); 
 digitalWrite(BUZZER_PIN, LOW); 
 digitalWrite(LED_PIN, LOW); 
 } 
 delay(100); 
 }