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Acoustic Barcodes Store Data In Sound Waves

A group of students at Carnegie Mellon University have created Acoustic Barcodes: a series of etched lines placed on almost any surface that is read by a system via the unique audible waveform given off when an object - like a fingernail or pen - is ran across the notches.

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news, tech Jason England news, tech Jason England

Engineer Builds A Real-Life Portal Turret

If ever there was a perfect defensive weapon, it would be a turret with a voice so soothing and design so minimalistically innocent, you feel guilty about murderously destroying it.  We have Portal to thank for that; but we are now one step closer to this being a reality, as a budding engineer has built a real-life version of this stationary weapon.

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MIT student builds an electric self-balancing unicycle

A rather fantastic DIY project to end the year: MIT student Stephan Boyer has built his own self-balancing electrical unicycle to roll with speed around the campus.

Called the "Bullet", the custom steel body holds two 7Ah 12-volt batteries, a 450-watt electric motor and an ATmega328 chip.  This gives the solowheel transport a range of 5 miles with a max speed of 15mph.  At that speed, it's not going to replace your daily commute; but it makes for the perfect round-campus mode of transportation, as the students in the video demonstration.

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