// ==================================================== // ArduExams Copyright(C) 2018 Furkan Türkal // This program comes with ABSOLUTELY NO WARRANTY; This is free software, // and you are welcome to redistribute it under certain conditions; See // file LICENSE, which is part of this source code package, for details. // ==================================================== #include <LiquidCrystal.h> #include <DHT.h> //https://github.com/adafruit/DHT-sensor-library //Library Manager -> Adafruit_Sensor #define PIN_DHT11 8 #define DHTTYPE DHT11 DHT dht(PIN_DHT11, DHTTYPE); LiquidCrystal lcd(0, 1, 4, 5, 6, 7); float DHT11_Humidity = 0.0; float DHT11_Temperature = 0.0; void setup() { lcd.begin(16, 2); lcd.clear(); lcd.setCursor(0,0); lcd.print("WAIT..."); dht.begin(); lcd.print("Temp: Humidity:"); Serial.begin(9600); } void loop() { DHT11_Humidity = dht.readHumidity(); DHT11_Temperature = dht.readTemperature(true); if(isnan(DHT11_Humidity) || isnan(DHT11_Temperature)){ lcd.print("NaN"); Serial.println("NaN"); } else { lcd.setCursor(0, 1); if(DHT11_Humidity > 70){ lcd.print("MORE MOISTURE"); } else if (DHT11_Humidity >= 50 && DHT11_Humidity <= 70){ lcd.print("MOISTURE"); } else if (DHT11_Humidity < 50){ lcd.print(""); } lcd.setCursor(7,1); if(DHT11_Temperature > 25){ lcd.print("HOT"); } else if (DHT11_Humidity < 15){ lcd.print("COLD"); } } delay(1000); }