[주요부품]

- Arduino Uno

- Motor sheild <-- 바로가기 클릭

- PSD Sensor (2Y0A21 F 08) : 2EA

- Geared DC Motor (120rpm) : 2ea

[소스코드] Arduino 1.0.3

int val1=0;
int val2=0;
int spd1=200;
int spd2=100;

void setup()
{
  pinMode(14, INPUT);
  pinMode(3, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(9, OUTPUT);
 
}

void loop()
{
  val1 = analogRead(A0);
  val2 = analogRead(A1);
  if(val1>=650)
  {
    left();
    delay(500);
  }
  else if(val1<=200)
  {
    left();
    delay(500);
  } 
  else if(val2>=650)
  {
    left();
  } 
  else if(val2<=200)
  {
    left();
  } 
  else rturn();
   
}

void rturn()
{
  analogWrite(5,spd1);
  analogWrite(6,spd2);
  analogWrite(3,0);
  analogWrite(9,0);
}

void left()
{
  analogWrite(3,spd2);
  analogWrite(6,spd2);
  analogWrite(5,0);
  analogWrite(9,0);

}