const int pin1L = 10;   
const int pin2L = 9;    
const int speedPinL = 8;    

const int pin1R = 12;    
const int pin2R = 11;   
const int speedPinR = 13;    

void mode_pin()
{
	pinMode(pin1L, OUTPUT); 
	pinMode(pin2L, OUTPUT); 
	pinMode(speedPinL, OUTPUT);  
 
	pinMode(pin1R, OUTPUT);
  pinMode(pin2R, OUTPUT); 
  pinMode(speedPinR, OUTPUT); 
	stop();
}

void set_Motorspeed(int speed_L,int speed_R)
{
  analogWrite(speedPinL,speed_L); 
  analogWrite(speedPinR,speed_R);   
}

void go_Forward(void)  
{
  digitalWrite(pin1L,true);
  digitalWrite(pin2L,!true);
  digitalWrite(pin1R,true);
  digitalWrite(pin2R,!true);
}
void go_Left(void)  
{
  digitalWrite(pin1L,true);
  digitalWrite(pin2L,!true);
  digitalWrite(pin1R,!true);
  digitalWrite(pin2R,true);
}
void go_Right(void)  
{
  digitalWrite(pin1L,!true);
  digitalWrite(pin2L,true);
  digitalWrite(pin1R,true);
  digitalWrite(pin2R,!true);
}
void go_Back(void)  
{
  digitalWrite(pin1L,!true);
  digitalWrite(pin2L,true);
  digitalWrite(pin1R,!true);
  digitalWrite(pin2R,true);
}
void stop()    
{
  digitalWrite(pin1L,!true);
  digitalWrite(pin2L,!true);
  digitalWrite(pin1R,!true);
  digitalWrite(pin2R,!true);
}

void setup()
{
	mode_pin();
	go_Forward();
  set_Motorspeed(255,255);
  delay(2000);
  
  go_Back();
  set_Motorspeed(255,255);
  delay(2000);
  
  go_Left();
  set_Motorspeed(255,255);
  delay(5000);
  
  go_Right();
  set_Motorspeed(255,255);
  delay(1000);
  
  stop();
}