While the NXT may be the reigning champion of the LEGO robotics world, there's actually another hobby platform that's caught in on the broader maker/robotics/hacker community. That's the arduino board. Although the arduino is completely open (and open source), different "shields" can be added to quickly add new features to the base microcontroller. In this case, a wave shield was used to allow this TARDIS to play the Doctor Who theme at regular intervals. The TARDIS (which stands for Time And Relative Dimensions In Space) is the Doctor's famous vehicle that is bigger on the inside (and has a few other interesting features - the Wikipedia article on the topic is terrifyingly large). This was a huge hit at this year's BrickFair, where Jon also led a seminar to fill us in on the possibilities of using the arduino platform in LEGO models.
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