Description
Guys, In this project DHT11, is a Humidity and Temperature Sensor, which generates calibrated digital output. DHT11 can be interface with any microcontroller like Arduino, Raspberry Pi, etc. and get instantaneous results. In this project, we will interface Arduino with DHT11 Temperature and Humidity Sensor. Okay let's see what happens.
Components Required
| 1 | Arduino Nano | 1 |
| 2 | DHT11 Humidity and Temparature Sensor | 1 |
| 3 | LCD(16*2) | 1 |
| 4 | I2C Serial Interface Adapter Module | 1 |
| 5 | Bread Board | 1 |
| 6 | Jumper Wires | 1 |
Circuit Diagram
Program
#include <Wire.h> //Library for using I2C
#include <LiquidCrystal_I2C.h> //Library for using I2C type LCD display
#include <DHT.h> //Library for using DHT sensor
#define DHTPIN PA1
#define DHTTYPE DHT11
LiquidCrystal_I2C lcd(0x27, 16, 2); //initilize object lcd for class LiquidCrystal_I2C with I2C address of 0x27 and 16x2 type LCD display
DHT dht(DHTPIN, DHTTYPE); //initilize object dht for class DHT with DHT pin with STM32 and DHT type as DHT11
void setup()
{
// initialize the LCD
lcd.begin();
dht.begin(); //Begins to receive Temperature and humidity values.
lcd.backlight(); // Turn on the blacklight and print a welcome message.
lcd.setCursor(0,0);
lcd.print("CIRCUIT DIGEST");
lcd.setCursor(0,1);
lcd.print("DHT11 with STM32");
delay(3000);
lcd.clear();
}
void loop()
{
float h = dht.readHumidity(); //Gets Humidity value
float t = dht.readTemperature(); //Gets Temperature value
lcd.setCursor(0,0);
lcd.print("Temp: ");
lcd.print(t);
lcd.print(" C");
lcd.setCursor(0,1);
lcd.print("Humid: ");
lcd.print(h);
lcd.print(" %");
}