Introduction: Dark Activated Night Light
Step 1: Materials
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
Build the circuit on the breadboard!
Step 3: Done!
Done! Now turn off the lights and it should light up.
Step 4: Stripboard Version

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1 Person Made This Project!
- JaiS5 made it!
6 Comments
8 years ago
I love it! Totally gonna make it! Where did you get the such a small breadboard?!
Reply 8 years ago on Introduction
I live in China and I got the mini breadboards from taobao a Chinese service. You will can find these at RadioShack or at EBay. Thanks, please follow me if you liked it.
Reply 7 years ago on Introduction
Here it is on Ebay for $3.44 each
http://www.ebay.com/itm/Mini-170-Tie-Points-Solderless-Breadboard-Prototype-Arduino-PIC-PI-PCB-/171435892749?pt=LH_DefaultDomain_3&var=&hash=item27ea60200d
9 years ago on Introduction
Hey Ploopy, nice project! It would be cool if you gave member H4ZZ498 some credit in your text, since you rebuild his project: https://www.instructables.com/id/Light-Sensitive-Night-Light/
It's good practice to refer to other I'bles you used...
Reply 9 years ago on Introduction
I just changed it and pu a link to his ible at the top ↑
Reply 9 years ago on Introduction
Cool! Now it's what Instructables is all about: Learn, make share :-)