// Controlling RC car via Arduino.

 int monitor=0;             // identifying variables

 void setup(){             
  Serial.begin(9600);       // Code interface between arduino & pc
  pinMode(2,OUTPUT);        //
  pinMode(4,OUTPUT);        // identifying pin as output
  pinMode(5,OUTPUT);        //
  pinMode(7,OUTPUT);        //
 }
  
  void loop(){
  monitor=Serial.read();
 if (monitor=='6'){digitalWrite(2,HIGH);digitalWrite(4,LOW);}     // Right      
 if (monitor=='4'){digitalWrite(4,HIGH);digitalWrite(2,LOW);}     // left       
 if (monitor=='8'){digitalWrite(5,HIGH);digitalWrite(7,LOW);}     // Forward    
 if (monitor=='2'){digitalWrite(7,HIGH);digitalWrite(5,LOW);}     // backward    
 if (monitor=='0'){digitalWrite(2,LOW);}    // OFF     
 if (monitor=='0'){digitalWrite(4,LOW);}    // OFF     
 if (monitor=='0'){digitalWrite(5,LOW);}    // OFF     
 if (monitor=='0'){digitalWrite(7,LOW);}    // OFF     
 

  }