User Manual

VMA345
V. 01 – 10/02/2020 5 ©Velleman nv
8. Example Sketch
/* How to use the DHT-22 sensor with Arduino uno
Temperature and humidity sensor
More info: http://www.ardumotive.com/how-to-use-dht-22-sensor-en.html
Dev: Michalis Vasilakis // Date: 1/7/2015 // www.ardumotive.com */
//Libraries
#include <dht.h>
dht DHT;
//Constants
#define DHT22_PIN 2 // DHT 22 (AM2302) - what pin we're connected to
//Variables
float hum; //Stores humidity value
float temp; //Stores temperature value
void setup()
{
Serial.begin(9600);
}
//Variables
void loop()
{
int chk = DHT.read22(DHT22_PIN);
//Read data and store it to variables hum and temp
hum = DHT.humidity;
temp= DHT.temperature;
//Print temp and humidity values to serial monitor
Serial.print("Humidity: ");
Serial.print(hum);
Serial.print(" %, Temp: ");
Serial.print(temp);
Serial.println(" Celsius");
delay(1000); //Delay 1 sec.
}