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Mastering Arduino by Jon Hoffman

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Crash sensor

A crash sensor is basically a simple switch that has some sort of extender on it that gives it a large area to detect a crash. The following photograph show what a basic crash sensor would look like:

The crash sensor shown in the preceding photograph takes a simple mechanical switch, like the types used for end stops on 3D printers, and attaches it to the end of a circuit board. This makes it easy to mount out a robot chassis or other surfaces. The concept behind a crash sensor is when the switch is triggered, the sensor has bumped into something.

The crash sensor has three pins that are clearly marked as GND, VCC, and OUT. The ...

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