Being sick is tough. I'm almost all better, but tired. This weekend I did a shop upgrade that was necessary. When I moved the cab, I had to remove one of my florescent lights as it was too low. It was already a bit dark in the garage. I fixed that on the cheap.
I built 2, 10 foot LED bars. each has 750 leds in the 5050 size. Powered by modified computer power supplies. They are warm white. I probably should have gone with daylight 4k color. I'll likely balance these out with another few strips of bright white leds.
Power supplies are modded by disconnecting the fans to reduce noise, jumpering switch signal wire to ground so its always on, and deleting all the other power wires. These are 320 watt switching supplies. I haven't measured, but if I use the led specs, I'm probably only pulling 12-14 amps at 12 volts. That's 144-168 watts per ten footer. For anyone else nerding out on this, I noticed something else that I could improve on but probably wont... I supplied the strips in the middle... at the supply, the voltage is 12.22, at the end of the bar, 5 feet away, I get anywhere from 11.5-11.8 volts. Ideal would be 12.22...This tells me the internal wires in the strip are too small and a portion of my current load is going up in heat across these wires. I could fix it by running wires from the supply out to each end of the strip, evening the voltage, possibly increasing light output and efficiency all in one shot.
Total cost for the 20 foot of light is $20 for 2 power supplies, and $40 in LED's so $60
I also did some work on the cab. More on that later today I hope.
