Now for something different in the robotics world - a robot that can travel over a window or vertical surface less than 25mm thick, in order to paint the surface. You first create an image on a PC running custom processing software, which turns the image into data which is copied into the robot's Arduino sketch. The data contains information that directs the robot on its' travels. The robot is held in place with Neodymium magnets, and can also replicate the process on a floor or other flat horizontal surface for the faint-hearted. You can see the process in action through the following video:
To recreate your own version, check out the instructions on the project page. And for more, we're on twitter and Google+, so follow us for news and product updates as well.
If you're new to Arduino, the first step is a solid board for your projects - our Freetronics Eleven - the Arduino-Uno compatible with low-profile USB socket, onboard prototyping space and easy to view LEDs: