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("%...