#include "DHT.h"//
#define DHTPIN 6     //
#define DHTTYPE DHT22   // 
DHT dht(DHTPIN, DHTTYPE);
#include <LiquidCrystal_I2C.h>//
LiquidCrystal_I2C lcd(0x27, 16, 4);//
#include "RTClib.h"//
RTC_DS1307 rtc;//
char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
#define LDR_PIN A0
const float GAMMA = 0.7;
const float RL10 = 50;
#include <Servo.h>
Servo servo1;
Servo servo2;
int pos = 0;
void setup(){
  Serial.begin(9600);//ตั้งความเร็วสื่อสารที่ 9600 และสั่งให้เริ่มทำงาน
  lcd.init();// initialize the lcd
  dht.begin();//
  lcd.backlight();//
  lcd.begin(16, 4);//
  servo1.attach(5);
  servo2.attach(3);
}
void loop(){ 
  time();//
  read_dht();//
  light();
  servo(); //
}
void read_dht(){
  float h = dht.readHumidity();//
  float t = dht.readTemperature();//
  float f = dht.readTemperature(true);//
  Serial.print(F("Humidity: "));//แสดง Humidity:
  Serial.print(h);//แสดง 
  Serial.print(F("%  Temperature: "));//แสดง %  Temperature:
  Serial.print(t);//แสดง
  Serial.print(F("°C "));//แสดง
  Serial.print(f);//แสดง
  Serial.println(F("°F"));//แสดง
  lcd.home();//
  lcd.setCursor(0, 0);//
  lcd.print("Temp : ");//แสดง
  lcd.print(t);//แสดง
  lcd.setCursor(0, 1);//
  lcd.print("Humidity : ");//แสดง
  lcd.print(t);//แสดง
  lcd.print("%");//แสดง
  lcd.println();
  delay(1000);
}
void time(){
  rtc.begin();//
  DateTime now = rtc.now();//
  Serial.print("Current time: ");//แสดง Current time:
  Serial.print(now.year(), DEC);//แสดง
  Serial.print('/');//แสดง /
  Serial.print(now.month(), DEC);//แสดง
  Serial.print('/');//แสดง /
  Serial.print(now.day(), DEC);//แสดง
  Serial.print(" (");//แสดง (
  Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);//แสดง
  Serial.print(") ");//แสดง )
  Serial.print(now.hour(), DEC);//แสดง
  Serial.print(':');//แสดง :
  Serial.print(now.minute(), DEC);//แสดง
  Serial.print(':');//แสดง :
  Serial.print(now.second(), DEC);//แสดง
  Serial.println();
  delay(500);//
}
void servo(){
  float t = dht.readTemperature();
  DateTime now = rtc.now();
  int H= now.hour();
  int analogValue = analogRead(A0);//อ่านค่าจาก A0
  float voltage = analogValue / 1024. * 5;//สูตรคิดค่า volt
  float resistance = 2000 * voltage / (1 - voltage / 5);//สูตรคิดค่า Ohm
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));//สูตรคิดค่า lux
  if ((t>30)||(H%2==0)||(lux > 50)){
    for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees
      // in steps of 1 degree
      servo1.write(pos);              // tell servo to go to position in variable 'pos'
      delay(15);                       // waits 15ms for the servo to reach the position
    }
    for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
      servo1.write(pos);              // tell servo to go to position in variable 'pos'
      delay(15);                       // waits 15ms for the servo to reach the position
    }
    for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees
      // in steps of 1 degree
      servo2.write(pos);              // tell servo to go to position in variable 'pos'
      delay(15);                       // waits 15ms for the servo to reach the position
    }
    for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
      servo2.write(pos);              // tell servo to go to position in variable 'pos'
      delay(15);                       // waits 15ms for the servo to reach the position
    }
  }
  else{
    return;
  }
}
void light(){
  int analogValue = analogRead(A0);//อ่านค่าจาก A0
  float voltage = analogValue / 1024. * 5;//สูตรคิดค่า volt
  float resistance = 2000 * voltage / (1 - voltage / 5);//สูตรคิดค่า Ohm
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));//สูตรคิดค่า lux
  lcd.setCursor(0,2);//
  lcd.print("Lux: ");//
  lcd.print(lux);//
  lcd.print("          ");//
  if (lux > 50) {//
    lcd.setCursor(0,3);
    lcd.print("Light!");
  } else {
    lcd.setCursor(0,3);
    lcd.print("Dark!");//
  }
  delay(900);//
}