#include <DHT.h>;
#define DHTPIN 7 // what pin we're connected to
#define DHTTYPE DHT22 // DHT 22 (AM2302)
DHT dht(DHTPIN, DHTTYPE);
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd (0x27, 16, 2);
int hum;
int temp;
int heater = 9;
int AC = 8;
void setup() {
dht.begin();
lcd.init();
lcd.backlight();
pinMode (heater, OUTPUT);
pinMode (AC, OUTPUT);
}
void loop() {
lcd.setCursor (0, 1);
lcd.print (" ");
hum = dht.readHumidity();
temp= dht.readTemperature();
lcd.setCursor (0, 0);
lcd.print ("T: ");
lcd.setCursor (3, 0);
lcd.print (temp);
lcd.setCursor (10, 0);
lcd.print ("H: ");
lcd.setCursor (13, 0);
lcd.print (hum);
if (temp < 20){
digitalWrite (heater, HIGH);
digitalWrite (AC, LOW);
lcd.setCursor (0, 1);
lcd.print ("AC OFF, Heat ON");
delay (1000);
}
if (temp > 20 && temp < 26){
digitalWrite (heater, LOW);
digitalWrite (AC, LOW);
lcd.setCursor (0, 1);
lcd.print ("AC OFF, Heat OFF");
delay (1000);
}
if (temp > 26){
digitalWrite (heater, LOW);
digitalWrite (AC, HIGH);
lcd.setCursor (0, 1);
lcd.print ("AC ON, Heat OFF");
delay (1000);
}
}