int pir=7;
int rled=13;
int gled=12;
int bled=11;
int pirStr;
void setup() {
  // put your setup code here, to run once:
pinMode(pir, INPUT);
pinMode(rled,OUTPUT);
pinMode(gled,OUTPUT);
pinMode(bled,OUTPUT);
}

void loop() {
pirStr=digitalRead(pir);
if (pirStr==1){
  digitalWrite(rled, HIGH);
  digitalWrite(gled, LOW);
  digitalWrite(bled, LOW);
  delay(1000);
   digitalWrite(bled, HIGH);
  digitalWrite(gled, LOW);
  digitalWrite(rled, LOW);
  delay(1000);
}
else {
  digitalWrite(gled, HIGH);
  digitalWrite(rled, LOW);
   digitalWrite(bled, LOW);
}
}