Hi, my name is Philipp, i am 15 years old and from germany. I built six softboxes for shooting photos or for making videos. They operate at 12v DC and can be mounted on tripods.
Step 1: On the Bottom
I used someting like these for mounting the lights on a tripod: http://www.amazon.de/gp/product/B000LWCB5O/ref=pd...
Step 3: The Left Side
The cable for the 12v DC comes out of the left side.
Step 4: The Right Side
On the right side there is a connector for hooking up the next lamp in series.
Step 5: Four Lamps in Series on Tripods
Step 6: The Back
On the back der is a switch for switching on the lamp
Step 7: The Inside
On the inside of the softbox I used some simple LED stripes like these:
They are sodered together with some stiff wire, on the lower left corner you can see the switch and the power input, on the right the power output.
Step 8: Spacers
I put some spacers between the wooden body and the mat acrylic glass so the heat from the LEDs can get out. (They get pretty hot after some time!)
Step 9: Power
For powering all six lamps up together i used an old car battery charger.