Kontrol Buka Tutup Pintu Otomatis berbasis Arduino

Listing program 

#include <Servo.h>

Servo myservo;  //creates a servo object

                         //a maximum of eight servo objects can be created

int pos = 0;        //variable to store servo position

//amount of time we give the sensor to calibrate(10-60 secs according to the datasheet)

int calibrationTime = 10;

//the time when the sensor outputs a low impulse

long unsigned int lowIn;       

//the amount of milliseconds the sensor has to be low

//before we assume all motion has stopped

long unsigned int pause = 5000;

boolean lockLow = true;

boolean takeLowTime;

int pirPin = 2;            //digital pin connected to the PIR's output

int pirPos = 3;           //connects to the PIR's 5V pin

void setup(){

  myservo.attach(13);    //attaches servo to pin 4

  Serial.begin(9600);    //begins serial communication

  pinMode(pirPin, INPUT);

  pinMode(pirPos, OUTPUT);

  digitalWrite(pirPos, LOW);

  //give the sensor time to calibrate

  Serial.println("calibrating sensor ");

  for(int i = 0; i < calibrationTime; i++){

    Serial.print(calibrationTime - i);

    Serial.print("-");

    delay(100);

  }

  Serial.println();

  Serial.println("done");

  //while making this Instructable, I had some issues with the PIR's output

  //going HIGH immediately after calibrating

  //this waits until the PIR's output is low before ending setup

  while (digitalRead(pirPin) == HIGH) {

    delay(500);

    Serial.print(".");    

  }

  Serial.print("SENSOR ACTIVE");

}

void loop(){

  if(digitalRead(pirPin) == HIGH){  //if the PIR output is HIGH, turn servo

      for(pos = 0; pos < 180; pos += 1)  //goes from 0 to 180 degrees

    {                                                 //in steps of one degree

      myservo.write(pos);                   //tells servo to go to position in variable "pos"

      delay(15);                                   //waits for the servo to reach the position

    }

    for(pos =180; pos>=0; pos-=1)    //goes from 180 to 0 degrees

    {                              

      myservo.write(pos);                  //to make the servo go faster, decrease the time in delays for

      delay(15);                                  //to make it go slower, increase the number.

    }

    if(lockLow){

      //makes sure we wait for a transition to LOW before further output is made

      lockLow = false;          

      Serial.println("---");

      Serial.print("motion detected at ");

      Serial.print(millis()/1000);

      Serial.println(" sec");

      delay(50);

    }       

    takeLowTime = true;

  }

  if(digitalRead(pirPin) == LOW){     

    if(takeLowTime){

      lowIn = millis();             //save the time of the transition from HIGH to LOW

      takeLowTime = false;    //make sure this is only done at the start of a LOW phase

    }

  

    //if the sensor is low for more than the given pause,

    //we can assume the motion has stopped

    if(!lockLow && millis() - lowIn > pause){

      //makes sure this block of code is only executed again after

      //a new motion sequence has been detected

      lockLow = true;                    

      Serial.print("motion ended at "); //output

      Serial.print((millis()- pause)/1000);

      Serial.println(" sec");

      delay(50);

     

    }

  }

}