#include <LiquidCrystal.h>
// Create An LCD Object. Signals: [ RS, EN, D4, D5, D6, D7 ]
LiquidCrystal My_LCD(13, 12, 14, 27, 26, 25);
#include "DHT.h"
#define DHTPIN 4 // Digital pin connected to the DHT sensor
// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 --
// Pin 15 can work but DHT must be disconnected during program upload.
// Uncomment whatever type you're using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
// Initialize DHT sensor.
// Note that older versions of this library took an optional third parameter to
// tweak the timings for faster processors. This parameter is no longer needed
// as the current DHT reading algorithm adjusts itself to work on faster procs.
DHT dht(DHTPIN, DHTTYPE);
void setup() {
dht.begin();
Serial.begin(9600);
// Initialize The LCD. Parameters: [ Columns, Rows ]
My_LCD.begin(16, 2);
// Clears The LCD Display
My_LCD.clear();
My_LCD.print("Temp:");
// Set The Cursor Position To: [ Col 5, Row 1]
// The Next Message Will Start From The 6th Char Position in The 2nd Row
// Note: 1st Row Has An Index of 0, The 2nd Row Has An Index of 1
My_LCD.setCursor(0, 1);
// Display The Second Message In Position (5, 1)
My_LCD.print("RH :");
}
int count;
double num;
void loop() {
delay(2000);
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
float h = dht.readHumidity();
// Read temperature as Celsius (the default)
float t = dht.readTemperature();
// Read temperature as Fahrenheit (isFahrenheit = true)
float f = dht.readTemperature(true);
// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t) || isnan(f)) {
Serial.println(F("Failed to read from DHT sensor!"));
return;
}
My_LCD.setCursor(5, 0);
My_LCD.print(t);
My_LCD.setCursor(5, 1);
My_LCD.print(h);
delay(1000); // this speeds up the simulation
}