I have been toying with the idea of making light fixture with more than 3 LEDs for some time now. I seem to allow my flashlight budget to grow and grow and yet $40 for LEDs for a lamp seems crazy! I finally got around to getting this project rolling. I order 6 XP-E 5A Q3s from eprom for a nice neutral light. I had the joy of reflow soldering them to stars myself using the side of my soldering iron (I'm actually getting good at it). I decided that for this lamp I wanted a unique look and to hide the light source. I went to Lowes my one stop solution for a customer service free experience and picked up a piece of aluminum. about 2" wide by 36" long. Like most of my projects I visualize them first, maybe draw them out and then just start ordering parts. This one turned out as I had imagined. I wanted just a strip of aluminum hanging from the ceiling with the emitters facing up out of site. I used some Arctic Silver 2 part epoxy to mount the stars to the aluminum strip/fixture. Notice the excess epoxy, next time use BB sized portions NOT pea sized . I used an xitanium driver 350mA driver to run the 6 LEDs series. While not very scientific I have found the lamp to stay cool to the touch, maybe 80 degrees F. The power wires also act as the support and are routed through 2 holes drilled in the strip to prevent the wires from slipping. Notice the heat shrink tubing applied to the wires in this area to further prevent any shorting. All and all I am pleased with the color temperature of the light and appearance. The light hangs about 20" from the ceiling to get the most light to bounce off of it while making the LEDs not visible when looking at the light from another room.
Notice how the girlfriend's yoga mat makes an excellent work bench take care not to get any thermal epoxy on such mats while working on LED projects.
I used a measuring tape and permanent marker to mark the placement of the LEDs evenly.
I'll be sure to use BB sized portions next time.
This is what the lamp looked like all wired up and ready to be mounted. Tip: CLEARLY mark the polarity on the LEDs before soldering. This will save you the headache of re-soldering lights.
This is an up close shot of the LEDs running.
The final product!
It's hard to get an idea of how well this illuminates the room. I wouldn't say It's far brighter than a 60 watt incandescent but I like it more . While not the greatest comparison below are 2 pictures of the living room. The first is the LED and the second is a 60 watt incandescent lamp (the only one in the house, it doesn't get used very often)
Below is a shot of the light from the floor looking up.
Hope you all enjoy, as always I'm open to any questions or comments.