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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

A photo-resistor circuit

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funelec

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Hi

I am interested in building a simple circuit with my kid. I want to connect a battery to the circuit. the purpose is very simple - a LED light should turn on when the room is dark (we are building a light-night for him :) ).

How can I go about doing this? is there any link to the internet explaining how? or maybe someone here? I though of using a photo-resistor but i am no expert, so any tip would really help.

thanks alot.
 
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