Alarm Box
I will show you how to add an alarm to a box to frighten people who try to look inside. ;) Parts BreadboardSpeaker (the one I am using is a Mastertone 8 ohm speaker)Nine volt (9V) batteryBattery connecting wiresArduino (I'm using the UNO)33 ohm resistorbuttonJumper wiresBoxMasking tapeUSB connect...
By: laassp13
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By: laassp13
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[original story: Instructables]