Arduino obstacle avoiding bluetooth car

 ARDUINO BLUETOOTH OBSTACLE AVOIDING CAR

COMPONENTS AND SUPPLIES

 Arduino UNO

HC-05 Bluetooth Module

Ultrasonic Sensor - HC-SR04 (Generic)

Rechargeable Battery, Lithium Ion

SparkFun Dual H-Bridge motor drivers L298

Female/Female Jumper Wires

DC Motor, 12 V

SAMPLE PHOTOS

Arduino Code

#include <Ultrasonic.h>

Ultrasonic u = Ultrasonic(3,4);

#include <Servo.h>

Servo s = Servo();

void setup() {

  // put your setup code here, to run once:

  s.attach(8);

  pinMode(11,OUTPUT);

  pinMode(12,OUTPUT);

  pinMode(13,OUTPUT);

  analogWrite(11,150);

  pinMode(5,OUTPUT);

  pinMode(6,OUTPUT);

  pinMode(7,OUTPUT);

  analogWrite(5,150);

  Serial.begin(9600);

  

}

void loop() {

  // put your main code here, to run repeatedly:

  int x = Serial.read();

  if(x == '1'){

  s.write(90);

  delay(300);

  int d = u.read();

  if(d > 20){

    digitalWrite(12,LOW);

    digitalWrite(13,HIGH); 

    digitalWrite(6,LOW);

    digitalWrite(7,HIGH);

    delay(500);

    digitalWrite(12,LOW);

    digitalWrite(13,LOW); 

    digitalWrite(6,LOW);

    digitalWrite(7,LOW);

   }

  }

  if(x == '2'){

    digitalWrite(12,HIGH);

    digitalWrite(13,LOW); 

    digitalWrite(6,HIGH);

    digitalWrite(7,LOW);

    delay(500);

    digitalWrite(12,LOW);

    digitalWrite(13,LOW); 

    digitalWrite(6,LOW);

    digitalWrite(7,LOW);

   }

   if(x == '3'){

   s.write(30);

   delay(300);

   int d = u.read();

   if(d > 20){

        digitalWrite(12,LOW);

        digitalWrite(13,HIGH); 

        digitalWrite(6,HIGH);

        digitalWrite(7,LOW);

        delay(500);

        digitalWrite(12,LOW);

        digitalWrite(13,LOW); 

        digitalWrite(6,LOW);

        digitalWrite(7,LOW);

    }

    s.write(90);

   }

   if(x == '4'){

    s.write(120);

    delay(300);

    int d = u.read();

    if(d > 20){   

          digitalWrite(12,HIGH);

          digitalWrite(13,LOW); 

          digitalWrite(6,LOW);

          digitalWrite(7,HIGH);

          delay(500);

          digitalWrite(12,LOW);

          digitalWrite(13,LOW); 

          digitalWrite(6,LOW);

          digitalWrite(7,LOW);

    }  

    s.write(90);

   }

  

}