And now a project for the romantic technologists, brought to us by instructables user 'ghostbust555'. An Android phone carried by one half of a couple runs a special app that sends location information to a service, which is also polled by an Internet-enabled Arduino board. The distance between the two is calculated and then high-powered LEDs blink at a rate proportional to the distance apart. Finally the acrylic heart shown below is illuminated by the LEDs:


To get started with your own, including the Android code and Arduino sketch, click here. And for more news and updates, please follow us on twitterFacebook and Google+ - and don't forget to check out Ninja Blocks!

If you're looking for an Internet-enabled Arduino board - consider the Freetronics EtherTen. Apart from being fully Arduino Uno-compatible, it has onboard Ethernet, microSD socket, full USB interface (so you don't need a costly FTDI cable just to upload a sketch!) and supports optional Power-over-Ethernet: