I created this project to experiment with using an Arduino board and a Raspberry Pi together, it's basically a simple weather station with live updates accessible from the Internet. Demo here.
How it works
The Arduino gets the weather information from the DHT11 sensor, parses that information then sends it to Raspberry Pi (or any computer) via serial port (usb), the Pi gets that information and sends it to the sparkfun API to be stored there. The
master branch contains the code that does this: the arduino folder is destined to be sent to the Arduino board, while server.js is to be run on the the Raspberry Pi.
alternative branch contains another way to do this, by using only the Raspberry Pi connected directly to the DHT11 sensor without using the Arduino board.