#include <OneWire.h>
#include<DallasTemperature.h> 
#define fan 5
#define LDR A0
#define out 2
#define heater 4 
OneWire oneWire(out);
DallasTemperature sensors(&oneWire);
void setup() {
  Serial.begin(9600);
  sensors.begin();
  pinMode(heater,OUTPUT);
  pinMode(fan,OUTPUT);
  pinMode(7,OUTPUT);
  pinMode(8,OUTPUT);
  pinMode(9,OUTPUT);
  pinMode(10,OUTPUT);} 
void loop() {
  sensors.requestTemperatures();
  float temp = sensors.getTempCByIndex(0);
  if (temp != DEVICE_DISCONNECTED_C){ 
    int random = random(7,10);
    while(analogRead(LDR) < 400){
      digitalWrite(random, 1);
     
      if(temp < 20){
        digitalWrite(fan, 0);
        digitalWrite(heater, 1);}
  if(temp < 40 && temp > 20){
        digitalWrite(fan, 0);
        digitalWrite(heater, 0);}
  if(temp >= 40){
        digitalWrite(fan, 1);
        digitalWrite(heater, 0);}}
  while(analogRead(LDR) >= 400){
      digitalWrite(7, 0);
      digitalWrite(8, 0);
      digitalWrite(9, 0);
      digitalWrite(10, 0);
  if(temp < 20){
        digitalWrite(fan, 0);
        digitalWrite(heater, 1);}
  if(temp < 40 && temp > 20){
        digitalWrite(fan, 0);
        digitalWrite(heater, 0);}
  if(temp >= 40){
        digitalWrite(fan, 1);
        digitalWrite(heater, 0);}}else{Serial.println("Data Error");}
}
//eyvazian