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Robot Building for Beginners, Third Edition by David Cook

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CHAPTER 26

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Smoother, Smaller, Cheaper

Sandwich uses a “preprogrammed” chip and large through-hole parts so that the circuitry is easy to learn and build. This chapter explores the benefits that can be achieved without such constraints.

The first design modification takes the wiggle out of the robot—sacrificing goofiness for speed. After that, a much more radical change uses modern tiny parts around a programmable brain. Guess how that impacts the price!

Playing with Sensor Circuitry

A reader and nearby robot builder, Terry Jackson, increased the line-following efficiency of Sandwich with some ingenious revisions to the sensor portion of the schematic. ...

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