void setup(){
  pinMode(26, OUTPUT);
  pinMode(4, INPUT);
  Serial.begin(9600);

}
void loop(){
  int motion = 0;
  motion=digitalRead(4);
  if (motion==HIGH){
    digitalWrite(26, HIGH);
    Serial.print("motion is Detected ! ");
    Serial.println(motion);

  }else{
    digitalWrite(26, LOW);
    Serial.print("motion is Not Detected ");
    Serial.println(motion);

  }
  delay(1000);

}