Testing the sensors

After setting up the hardware, we can now test whether the sensors are working properly. To do so, we need to write a code to test both the digital temperature and humidity (DHT) sensor and the photocell.

Here is the complete code that I used in this project:

// Libraries
#include "DHT_Galileo.h"

// DHT sensor type
#define DHTTYPE DHT11 // DHT 11 

// DHT sensor pins
#define DHTIN 5
#define DHTOUT 6

// DHT instance
DHT_Galileodht(DHTIN,DHTOUT, DHTTYPE);

void setup()
{
  // Initialize the Serial port
Serial.begin(115200);

  // Init DHT
dht.begin();
}

void loop()
{
  // Measure from DHT
float temperature = dht.readTemperature();
float humidity = dht.readHumidity();

  // Measure light level
floatsensor_reading = analogRead(A0);
float light = sensor_reading/1024*100;

  // Display temperature
Serial.print("Temperature: ");
Serial.print((int)temperature);
Serial.println(" C");
   // Display humidity
Serial.print("Humidity: ");
Serial.print(humidity);
Serial.println("%...