A Robot Sundial Built with LEGO NTX

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A Robot Sundial Built with LEGO NTX
« on: September 02, 2008, 05:37:22 PM »
A Robot Sundial Built with LEGO NTX

What better use for an advanced robot than emulating an ancient time
keeping device? Jim Kelly has built a robot
sundial using the LEGO NTX robotics kit. The biggest hitch was the
lack of trig functions on the NTX brick. To get around that, he
offloaded the trigonometry to a PDA. The robot uses a compass sensor and
light sensor along with 3 motors and about 270 other LEGO parts. When
activated, the robot sundial orients itself and then begins bluetooth
transmission of the magnetic heading of the maximum reported light level
to the PDA, which calculates and returns the time to the NTX. The
Sundial is accurate to within 15 minutes. via The NTX Step blog.



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