RPiWeather

Weather station with Raspberry Pi

###INTRODUCTION The station tweets every 15 minutes the temperature, humidity, pressure and altitude data recorded by the sensors and, in addition, upload a photo taken by a webcam. In order to read the temperature and humidity it uses the DHT11 sensor of Adafruit, next to lMBP180 for the atmospheric pressure and the altitude

###INSTALATION Connect the sensors to the raspberry in the following or an equivalent way:

BMP180		DHT11
Sensor	Raspberry	Sensor	Raspberry
VIN	3V3	VIN	3V3
GND	GND	GND	GND
SCL	SCL	DATA	GPIO5
SDA	SDA

Once the sensors are connected to the Raspberry Pi we must make some adjustments to allow communication between the two parts. First, let's update the software using the following commands:

sudo apt-get update
sudo apt-get upgrade

Next, we will need to install the libraries to control the I2C interface, which we will do with the following command. In addition, we must activate the I2C interface, since it is disabled by default.

sudo apt-get install build-essential python-dev

Now, we have to install the libraries for the sensors and the camera (I used the P3 Eye):

sudo apt-get install git

git clone https://github.com/adafruit/Adafruit_Python_BMP.git 
cd Adafruit_Python_BMP
sudo python setup.py install

git clone https://github.com/adafruit/Adafruit_Python_DHT.git 
cd Adafruit_Python_DHT
sudo python setup.py install

sudo apt-get install fswebcam

Finally, execute this command:

git clone https://github.com/ame97/RPiWeather.git

###SCRIPT EXECUTION To run the script every 15 minutes, we can use crontab. To do this, we will put the command

crontab -e

And we will add to the file this line:

15 * * * * /path_to_the_script/RPiWeather.py