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Uploaded on Dec 13, 2010
This is my final project for ME2011 Intro to Mechanical Engineering at the University of Minnesota.
For those of you unfamiliar with the course, the assignment was to design and build a robot which does something interesting for 30 to 60 seconds with no human interaction and works reliably, while spending no more than $40 on materials.
This machine uses 2 Arduinos running a combined 765 lines of code to produce simple text and graphics by rapidly flashing 5 spinning LEDs with precise timing. The timing is controlled by an IR sensor which reads a tab on the underside of the disk.
If you are wondering what that whining noise is, it is the pulse-width modulation controlling the motor speed.