Physical Computing: Sensing and Controlling the Physical World with Computers
Dan O’Sullivan and Tom Igoe    ISBN: 9781592003464


Making Things Move: DIY Mechanisms for Inventors, Hobbyists and Artists
Dustin Roberts    ISBN: 9780071741674


Lessons In Industrial Instrumentation

Tony R. Kuphaldt

This is a free textbook along with links to many other Instrumentation resources.