Introduction: Dark Activated Night Light

A dark activated night light.

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

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

Comments

author
kmargie25 made it!(author)2014-08-18

I love it! Totally gonna make it! Where did you get the such a small breadboard?!

author
Ploopy made it!(author)2014-08-22

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.

author
Ploopy made it!(author)2015-07-22

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

author
ynze made it!(author)2013-07-17

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...

author
Ploopy made it!(author)2013-07-17

I just changed it and pu a link to his ible at the top ↑

author
ynze made it!(author)2013-07-18

Cool! Now it's what Instructables is all about: Learn, make share :-)

author
JaiS5 made it!(author)2015-10-17

made it 2 times didnt work did it exatcly to specs

WIN_20151017_175835.JPGWIN_20151017_175827.JPG
author
Ploopy made it!(author)2015-10-17

Cool!

does it work now?

if it doesn't maybe you have a PNP Transistor, or had abad connection.

If you have any problems tell me and i will do my best to help u.

About This Instructable

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Bio: I like eletronics, AVR's and 555timers. Mini Pumpkins! I also love jerky & ☕️.
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