Thingiverse
Smily
by easai
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This is a case for a dot matrix display. An Arduino circuitry is inside, and the PIR sensor on top of the enclosure catches any moves in front of the box.
The original box: https://www.thingiverse.com/thing:1264391
The PIR sensor housing: https://www.thingiverse.com/thing:291270
The original box: https://www.thingiverse.com/thing:1264391
The PIR sensor housing: https://www.thingiverse.com/thing:291270
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