int sensorPin = A1; //hämärätunnistimen Analogia input
int sensorValue = 0; // asetetaan muuttujalle arvo 0
int i=0;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600); //Käytä sarjamonitoria, helpottaa
  pinMode (2, OUTPUT); //KATU
  pinMode (3, OUTPUT); //A-PUNA
  pinMode (4, OUTPUT); //A-KELT
  pinMode (5, OUTPUT); //A-VIHR
  pinMode (11, OUTPUT); //B-pun
  pinMode (12, OUTPUT); //b-kelt
  pinMode (13, OUTPUT); //b-vihr
}

void loop() {
do{
  digitalWrite(2,LOW);
  delay(100);
  digitalWrite(3,HIGH);
  delay(100);
  digitalWrite(4,HIGH);
  delay(100);
  digitalWrite(5,HIGH);
  delay(100);
  digitalWrite(11,HIGH);
  delay(100);
  digitalWrite(12,HIGH);
  delay(100);
  digitalWrite(13, HIGH);
  delay(100);
  digitalWrite(2, LOW);
  delay(100);
  digitalWrite(3, LOW);
  delay(100);
  digitalWrite(4,LOW);
  delay(100);
  digitalWrite(5,LOW);
  delay(100);
  digitalWrite(11,LOW);
  delay(100);
  digitalWrite(12,LOW);
  delay(100);
  digitalWrite(13,LOW);
  delay(100);
  Serial.print ("Valosensorin arvo : ");
  Serial.println(analogRead(sensorPin));
  if (analogRead(sensorPin)<400)
  break;
}while (analogRead(sensorPin)>0);
do{
  delay(2000);