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Simple Metal Detector Circuit
how to play "smoke detector" (Airsoft/Nerf/Paintball)
Airsoft Bomb Replica
Engineer of None
Modify a 6 EUR smoke detector for use with microcontroller, auto-dialer, linking, and more
Keychain 808 spy camera with PIR motion detector controlled by Arduino chip
5 Cool Projects With a General Transistor
GHOST Detector or a Simple Charge Detector
Small-Range Motion Detector
Coherer nuclear explosion detector
Posted:Apr 20, 2013
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