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the motion-activated critter cam
In this chapter, you’ll build a Motion-Activated Critter Cam that uses the MINDSTORMS EV3 Infrared Sensor as a proximity detector to monitor outdoor areas. You can use this surveillance system to observe animals without scaring them away. For example, say you’ve found bite and scratch marks all over a play fort in the backyard, as shown in Figure 1-1.
FIGURE 1-1: An unidentified animal has been visiting a play fort at night to graw and scratch the wood.
To find out what animal is gnawing or scratching the wood, you could attach a trail camera with built-in motion detection to a tree and leave it unattended for ...
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