zachtheterrible
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zachtheterrible submitted a new article:
Laser or IR beam alarm system - This is a cool little circuit that i made for a school project. It can be used as one of those thin
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Laser or IR beam alarm system - This is a cool little circuit that i made for a school project. It can be used as one of those thin
This is a cool little circuit that i made for a school project. It can be used as one of those things that is usually seen on the door of small shops so that when someone walks in it goes "ding dong". It could also be used as a burglar alarm (just need to get a loud enuf siren).
A light has to be pointed at the LDR. It can be anything, just as long as its bright enough. Im pretty sure that an infrared LED would work, a regular light, or my personal favorite: a laser pointer, just like in the...
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