Make: Online : Dark-detecting pumpkin light circuit

Dark-detecting pumpkin light circuit

Sayeth the animated, wraithian lab coats at Evil Mad Scientist Laboratories (think: Santa's worshop, only for Halloween, and evil!):

Here's an inexpensive electronic circuit that you can build to put in your Jack-o'lantern. It provides power to drive a few LEDs at night, and automatically turns them off during the daytime. It's a simple and automatic dark-detecting circuit that you can use to for your very own photosensitive pumpkin.

A dark detecting circuit for your jack-o'-lantern

Comments

Oldest comments listed first.

Posted by: Faucets on October 9, 2008 at 4:25 AM

What a pumkin-o-lantern!

I made this circuit, this circuit works properly. It also doesn't require more batteries as it have LEDs that glow when sunlight falls on it. You just have to make a proper circuit as per circuit diagram.

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Posted by: joe smith on October 13, 2008 at 10:51 PM

light in a pumpkin... easy to use it... you don't have to turn it off and on. and its safe to use. how big is it? is it water proof ?

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