7. temp luchtvochtigheid sensor


 
 
 
 
 
 
 
 
 
benodigde library kun je o.a. hier krijgen:
http://randomnerdtutorials.com/arduino-serial-plotter-new-tool/ 
 
 
info datasheet:
http://www.micropik.com/PDF/dht11.pdf
 
 
code:
 
#include "DHT.h"

#define DHTPIN A0 // what pin we're connected to

// Uncomment whatever type you're using!
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +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

DHT dht(DHTPIN, DHTTYPE);

void setup()
{
    Serial.begin(9600);
    Serial.println("DHTxx test!");

    dht.begin();
}

void loop()
{
    // Reading temperature or humidity takes about 250 milliseconds!
    // Sensor readings may also be up to A0 seconds 'old' (its a very slow sensor)
    float h = dht.readHumidity();
    float t = dht.readTemperature();

    // check if returns are valid, if they are NaN (not a number) then something went wrong!
    if (isnan(t) || isnan(h))
    {
        Serial.println("Failed to read from DHT");
    }
    else
    {
        Serial.print("Humidity: ");
        Serial.print(h);
        Serial.print(" %\t");
        Serial.print("Temperature: ");
        Serial.print(t);
        Serial.println(" *C");
    }