const int pwm = 3 ;
const int in_1 = 18 ;
const int in_2 = 19 ;

//For providing logic to L298 IC to choose the direction of the DC motor

void setup()
{
Serial.begin(9600);
pinMode(pwm,OUTPUT) ;   //we have to set PWM pin as output
pinMode(in_1,OUTPUT) ;  //Logic pins are also set as output
pinMode(in_2,OUTPUT) ;
}

void loop()
{
//For Clock wise motion , .in_1 = High , in_2 = Low
analogWrite(pwm,150) ;
digitalWrite(in_1,HIGH) ;
digitalWrite(in_2,LOW) ;
delay(1000);


digitalWrite(in_1,LOW) ;
digitalWrite(in_2,HIGH) ;
delay(1000) ;
 }