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IT consultant Gordon Henderson gave a demonstration of his Lego PiTrak Mk1.
Henderson's device began life as a Big Trak, a programmable six-wheeled toy from the 1980s. The project calls for the original control board to be replaced with a Raspberry Pi and for the addition of remote control and sensors.
The car uses a Raspberry Pi mounted on an Adafruit Prototyping Pi Plate, with sides built out of Lego.
Image credit: John Honniboll