There are plenty of RC cars available on the internet, but not many combine Lego bricks, an XBEE radio, and Arduino-powered remote controls. This Instructables project from Cyrus Tabrizi (aka Crtlego) does, though, and it’s worth checking out even if you aren’t all that interested in (or capable of) building one yourself.
The remote might actually be the more impressive of the two parts of this project. Dubbed the Handuino (short for "Handheld Arduino"), the remote also has an onboard Arduino controller, along with a color LCD screen, a joystick, four buttons, and two rotary inputs. In other words, it's a little more complex than a typical retail RC remote.
Crtlego has included detailed, step-by-step instructions for the project on his Instructables page. Check out some more lego creations from this high school senior(!) on his website—you won't regret it.
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This story, "Lego and Arduino come together to make one powerful RC car" was originally published by TechHive.