Data can be represented using many forms and medium, and the typical wireless data transmissions is using RF radio modules. However there are many options to experiment with and one of them is sending data via infra-red. Most experimenters will know that IR is useful for controlling an Arduino, however data such as text can also be transmitted.
This has been demonstrated by Instructables member Yoruk who shows how to send text over an infra-red link using sample data from a temperature sensor. Although the range of infra-red is limited it still has a use, for example if you need to send data from a rotating item it's much easier to use interference-free IR than using wires which tangle.
Yorruk has provided the required hardware details along with transmit and receive sketches, so visit his Instructable to learn more. And for more, we're on facebook, twitter and Google+, so follow us for news and product updates as well.
If you're looking to learn how to use an Arduino to with infra-red remote data and much more, you can't go past "Arduino Workshop - A Hands-On Introduction with 65 Projects” by John Boxall.
Arduino Workshop takes the reader from having zero knowledge about the Arduino platform, electronics and programming and leaves them with the know-how and instructions on everything from blinking an LED, to robotics, wireless data, cellular communications, motor control, sensors, Internet connected systems and more. For more information including a sample chapter and table of contents, visit the book page.