Street Light.ino

int pinA = 2;
int pinB = 3;
int pinC  = 4;
int pinD = 5;
int pinE = 6;
int pinF = 7;
int pinG = 8;
int  D1 = 9;
int D2 = 10;
int D3 = 11;
int D4 = 12;

// the setup routine  runs once when you press reset:
void setup() {                
  // initialize  the digital pins as outputs.
  pinMode(pinA, OUTPUT);     
  pinMode(pinB,  OUTPUT);     
  pinMode(pinC, OUTPUT);     
  pinMode(pinD, OUTPUT);     
  pinMode(pinE, OUTPUT);     
  pinMode(pinF, OUTPUT);     
  pinMode(pinG,  OUTPUT);   
  pinMode(D1, OUTPUT);  
  pinMode(D2, OUTPUT);  
  pinMode(D3,  OUTPUT);  
  pinMode(D4, OUTPUT);  
}

// the loop routine runs over  and over again forever:
void loop() {
  digitalWrite(D1, HIGH);
  digitalWrite(D2,  LOW);
  digitalWrite(D3, LOW);
  digitalWrite(D4, LOW); 
  //0
  digitalWrite(pinA,  LOW);   
  digitalWrite(pinB, HIGH);   
  digitalWrite(pinC, LOW);   
  digitalWrite(pinD, LOW);   
  digitalWrite(pinE, HIGH);   
  digitalWrite(pinF,  LOW);   
  digitalWrite(pinG, LOW);   
  delay(1);               // wait for  a second
  
  digitalWrite(D1, LOW);
  digitalWrite(D2, HIGH);
  digitalWrite(D3,  LOW);
  digitalWrite(D4, LOW); 
  //1
  digitalWrite(pinA, LOW);   
  digitalWrite(pinB, LOW);   
  digitalWrite(pinC, LOW);   
  digitalWrite(pinD,  HIGH);   
  digitalWrite(pinE, LOW);   
  digitalWrite(pinF, LOW);   
  digitalWrite(pinG, LOW);   
  delay(1);               // wait for a second
  
  digitalWrite(D1, LOW);
  digitalWrite(D2, LOW);
  digitalWrite(D3,  HIGH);
  digitalWrite(D4, LOW); 
  //2
  digitalWrite(pinA, HIGH);   
  digitalWrite(pinB, HIGH);   
  digitalWrite(pinC, LOW);   
  digitalWrite(pinD,  HIGH);   
  digitalWrite(pinE, LOW);   
  digitalWrite(pinF, HIGH);   
  digitalWrite(pinG, LOW);     
  delay(1);               // wait for a second

  digitalWrite(D1, LOW);
  digitalWrite(D2, LOW);
  digitalWrite(D3, LOW);
  digitalWrite(D4, HIGH); 
  //3
  digitalWrite(pinA, LOW);   
  digitalWrite(pinB,  HIGH);   
  digitalWrite(pinC, LOW);   
  digitalWrite(pinD, HIGH);   
  digitalWrite(pinE, LOW);   
  digitalWrite(pinF, LOW);   
  digitalWrite(pinG,  HIGH);     
  delay(1);               // wait for a second
}