Instructables
Picture of LED Night Light



Here's a relatively easy weekend project that will yield astonishing results!


With a few hours and some handy materials you can build your own LED night light.
My first trial took about 5 hours of continuous work to design and fabricate the finished product.

After several trials, it took an average of 2 - 4 hours in the shop before I've finished making one complete night light. This is mostly due to the amount of soldering and wiring that had to be done for each LED. 

In the end, I feel it was well worth the effort.
 
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Step 1: Step 1: Gather your materials

Picture of Step 1: Gather your materials
Tools:
-Table Saw
-Drill Press
-Handheld Screw Driver with various bits and drivers (varies according to size of LEDs)
-Glue Gun
-Solder Iron
-Wire Stripper
-Sharpie Pen
-Measuring Tape

Materials:
-Solder
-5mm RGB LEDs
-Speaker Wire (I used 20 AWG)
-1 AA Battery Holder w/ Switch
-Glue Sticks
-Flat Black Spray Paint
-1 piece of Wood
-1 Sheet of Vellum
-Screws
 

Step 2: Step 2: Strip the wood

Picture of Step 2: Strip the wood
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You'll want to strip a piece of wood in half using a table saw. 

Next, you'll want to cut those two pieces of wood into two  22", 18" and either 7" or 12" pieces.
(I chose the 12" length)

Keep in mind that I used only one piece of wood that was about 6' x 3" so be sure to measure twice and cut once.
ilpug3 years ago
This is pretty awesome. I like the translucency. I might replace the vellum with a sheet of thin milky acrylic, so the whole thing could double as a white-board to write notes on.
AllenQ3 years ago
I love this project and it seems well within my "noobie" capabilities. The video shows lights blinking in an organized manner, yet I don't see any "intelligence" in the circuit. Are the blinking LEDs actually blinking randomly (it does not appear to be the case) or do you use a particular kind of LED? The RGB LEDs I've seen in my very limited experience have four leads (presumably 3 anodes and one cathode?). Can you please specify what kind of LEDs (and source?) you have used here?

Thanks. Again, it is nice to see such a polished project that can be accomplished with a limited skill/tool set
Kamiana8 (author)  AllenQ3 years ago
The LEDs seem to have a pre-configured circuit within the diode that allows it to cycle through it's color combinations. I wish I could point out the exact set of RGB LEDs I had bought from eBay but my purchase history is automatically deleted after quite some time. But to answer your question it must've been a certain type of LED with a built-in circuit that caused it to blink in a certain pattern. But of course I didn't know that the LED could do that when I bought it haha but I did want 2 leads instead of 4 since I have no experience with an LED with 4 leads.

I've shot a quick video of the RGB LED while attached to a 3v 2032 Coin Cell Battery to better illustrate my description. (I'll also post the video in this instructable for others to reference.)

http://www.youtube.com/watch?v=bAgBqRHQsUc

thanks for you comment
AllenQ Kamiana83 years ago
If anyone is interested, I found them on ebay for $10 for 100 of them in the US with free shipping: http://cgi.ebay.com/100x-5mm-RGB-Rainbow-Flash-Fast-Slow-turns-LED-FR-/390321277953?pt=LH_DefaultDomain_0&hash=item5ae0f60c01

or 8 pounds for 100 of them, UK, also with free shipping: http://cgi.ebay.co.uk/100x-5mm-RGB-Rainbow-Flash-Fast-Slow-turns-LED-FR-/160573827798?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2562f22ad6

They are called "100x 5mm RGB Rainbow Flash Fast & Slow by turns LED FR" on the ebay sites. They have 3.5 forward voltage and, more to the point for this type of project, a view angle of 25 degrees. Best part, only two leads! All the blinking takes place internally.
AllenQ Kamiana83 years ago
Thanks Kamiana8. Your coin battery video demonstrates that the LEDs do follow some sort of internal blink sequence or program. Does anybody know where I can get two lead RGB LEDs? Ones similar to the ones in this instructable would be particularly appreciated.

Thanks!
AllenQ3 years ago
If anyone is interested, I found them on ebay for $10 for 100 of them in the US with free shipping: http://cgi.ebay.com/100x-5mm-RGB-Rainbow-Flash-Fast-Slow-turns-LED-FR-/390321277953?pt=LH_DefaultDomain_0&hash=item5ae0f60c01

or 8 pounds for 100 of them, UK, also with free shipping: http://cgi.ebay.co.uk/100x-5mm-RGB-Rainbow-Flash-Fast-Slow-turns-LED-FR-/160573827798?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2562f22ad6

They are called "100x 5mm RGB Rainbow Flash Fast & Slow by turns LED FR" on the ebay sites. They have 3.5 forward voltage and, more to the point for this type of project, a view angle of 25 degrees. Best part, only two leads! All the blinking takes place internally.