Instructables

Dark Activated Night Light

Picture of Dark Activated Night Light
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A dark activated night light.

Please also see this one by H4ZZ498
It's the same thing, he made it first thogh.
 
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Step 1: Materials

Picture of Materials
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Breadboard (You could make a PCB if you want)
Any NPN transistor
One LDR
10k resistor ( Or trimpot for variable sensivity)
A LED ( You choose the color)
2X AA battery pack or any 3v battery

Step 2: Build The Circuit

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Build the circuit on the breadboard!

Step 3: Done!

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Done! Now turn off the lights and it should light up.

Step 4: Stripboard version

Picture of Stripboard version
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ynze1 year ago
Hey Ploopy, nice project! It would be cool if you gave member H4ZZ498 some credit in your text, since you rebuild his project: http://www.instructables.com/id/Light-Sensitive-Night-Light/

It's good practice to refer to other I'bles you used...
Ploopy (author)  ynze1 year ago
I just changed it and pu a link to his ible at the top ↑
ynze Ploopy1 year ago
Cool! Now it's what Instructables is all about: Learn, make share :-)