#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#define DHT_PIN 4
#define DHT_TYPE DHT22
DHT dht(DHT_PIN, DHT_TYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
#define RED1 2
#define RED2 0
#define ORG1 32
#define ORG2 33
#define GRN1 25
#define GRN2 26
unsigned long lastUpdate = 0;
void setup() {
  Serial.begin(115200);
  dht.begin();
  lcd.init();
  lcd.backlight();
  pinMode(RED1, OUTPUT);
  pinMode(RED2, OUTPUT);
  pinMode(ORG1, OUTPUT);
  pinMode(ORG2, OUTPUT);
  pinMode(GRN1, OUTPUT);
  pinMode(GRN2, OUTPUT);
  lcd.setCursor(0, 0);
  lcd.print("Weather Station");
  lcd.setCursor(0, 1);
  lcd.print("Initializing...");
  delay(2000);
  lcd.clear();
}
void loop() {
  if (millis() - lastUpdate < 5000) return;
  lastUpdate = millis();
  float hum = dht.readHumidity();
  float temp = dht.readTemperature();
  digitalWrite(RED1, LOW); digitalWrite(RED2, LOW);
  digitalWrite(ORG1, LOW); digitalWrite(ORG2, LOW);
  digitalWrite(GRN1, LOW); digitalWrite(GRN2, LOW);
  lcd.setCursor(0, 0);
  lcd.print("T:"); lcd.print(temp, 1); lcd.print("C ");
  lcd.print("H:"); lcd.print(hum, 1); lcd.print("% ");
  lcd.setCursor(0, 1);
  if (hum > 60 && temp > 22) {
    digitalWrite(RED1, HIGH); digitalWrite(RED2, HIGH);
    lcd.print("Low        ");
  } else if (hum < 20 && temp < 18) {
    digitalWrite(ORG1, HIGH); digitalWrite(ORG2, HIGH);
    lcd.print("High       ");
  } else {
    digitalWrite(GRN1, HIGH); digitalWrite(GRN2, HIGH);
    lcd.print("Standard   ");
  }
  Serial.print("Temp: "); Serial.print(temp); Serial.print(" C | ");
  Serial.print("Humidity: "); Serial.print(hum); Serial.println(" %");
}