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326 Making Things Move

References

1. Tom Igoe, “Phototransistors Photocells” (http://itp.nyu.edu/physcomp/sensors/
Reports/PhototransistorsPhotocells).

2. Dan O’Sullivan and Tom Igoe, Physical Computing: Sensing and Controlling the
Physical World with Computers (Boston: Thomson, 2004).

3. Jeff Feddersen, NYU/ITP Sustainable Energy class notes, spring 2010.

4. Jeff Feddersen, “Anatomy of a Stepper Motor” (http://itp.nyu.edu/sustainability/
energy/texts/Rectification.pdf).