Instructables
Picture of DIY led video light
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Looking for a cheaper portable LED light for on location filming or photography well this is the $20 light. First you will need the items in the photo below. The poster board was $2.50 the wire was like $6.00 and the LED light strip was like $8.00 on amazon free shipping. Now I had all the tools if you have to buy the tools then this cost you a little more but not much. If you do have to buy the tools and battery holder then it might cost around $35.00
 
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Step 1: Poster Board

Picture of Poster Board
Decide what size you want your light to be and mark the poster board with your favorite marking tool. I am going to base this off the size I made my light so I made my board 14"x 11-1/2" . Then cut out the poster board with a razor knife be careful not to cut your self. After you have the board cut out measure 1" make a line parallel with the 14" side then space you lines 5/8" apart. The draw lines parallel with the 12" side 1" inch from that side on both sides. These lines are to keep the LED strip lights straight.

Step 2: Cut LED Strips

Picture of Cut LED Strips
The LED strip lights have cut marks on them with a picture of a pair of scissors be careful to cut as center of that mark as you can cause it will determine how much area you have to solder too. So cut the strips at 12". With the roll of lights I purchased I got 16 strips.

Step 3: Trim The Gel Off

Picture of Trim The Gel Off
14, 6:44 PM.jpg
14, 6:44 PM.jpg
14, 6:44 PM.jpg
14, 6:44 PM.jpg
The LED strip I have are water proof so thy have a gel cover you have to get this off the term points to solider. I used a razor blade to cut into it but not all the way just go about half way then peel it off this can be a little cumbersome but it doesn't take long.
poleman (author) 4 months ago
About 3amps
Jan_Henrik4 months ago

Very cool, how much current does it draw?

baecker035 months ago
you can give the Leds about 14-16 volts... might want to use hot glue to secure them
chaosrob6 months ago

REALLY like to know where you got ALL those LEDs for only $8.00!!

Ebay :)
poleman (author) 6 months ago
Thanks!
theweester6 months ago
Amazing. I had the same idea, with a different application using RGB LEDs. Never thought of doing this though! Great job
poleman (author) 6 months ago
Yes I forgot to put that. The LED strips run on 12vdc. If the power supply puts out dc then it should work. As for the load I haven't tested it but I think the LEDs at 12v pull around 10ma. There are 288 LEDs x .010 = 2.88A I think that should be in the ball park
kminer49er6 months ago

Here is a source for the LEDs. But I have a question regarding supplying power to the LEDs. I presume the LEDs run off 12v DC power. I have several old 120v AC to 12v DC power supplys that were used to operate various small electrial items (timers, clock, radio, laptop, etc.) Could one of them be used to power this device? How do I calculate how many lights could be run off one of these power supplies?

poleman (author) 6 months ago
I guess that didn't work. I got the lights at amazon for like 7.95 free shipping just do a search for led strip lights and you get a lot of choices.
poleman (author) 6 months ago
http://www.amazon.com/gp/product/B005EHHLD8/ref=s9_bbs_gw_d0_g60_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=0P0NHQM4CZ900BFYZXZV&pf_rd_t=101&pf_rd_p=1688200382&pf_rd_i=507846