L.E.D. Foglights.....*FINISHED!!*
Make sure you heat-sink those 1, 3, and 5 watt LEDs if you do something with them - they can cook themselves right quick if you let 'em... (I carry a 1 watt flashlight the size of a lipstick...)
Originally Posted by Tomas
Make sure you heat-sink those 1, 3, and 5 watt LEDs if you do something with them - they can cook themselves right quick if you let 'em... (I carry a 1 watt flashlight the size of a lipstick...)
Oh! Another thing to note about the 1, 3, and 5 watt LEDs is that they don't have a serious focusing lens built right into the LED body, but that it comes as a seperate one-piece assembly with fairly complex optics (both refractive and reflective) that takes very un-kindly to having most anything touch it's rear surfaces - the rear is an un-coated reflective surface and if you get sealant or whatever on 'em they no longer work correctly...
If you will be trying to put them in a reflector, get the side emitting LEDs, otherwise the front emitting with external optics is what you will want.
(I use side emitters in my Mag-Lite flashlights with the original parabolic reflectors, and use the front emitters plus optics in smaller flashlights.)
You will also want to carefully control the LED current for the big ones or you will have a problem. Electronic regulation of the current to very close tolerances is best.
BTW, these quickies you did with the LED arrays are impressive - much more useful light than I expected. Smile
If you will be trying to put them in a reflector, get the side emitting LEDs, otherwise the front emitting with external optics is what you will want.
(I use side emitters in my Mag-Lite flashlights with the original parabolic reflectors, and use the front emitters plus optics in smaller flashlights.)
You will also want to carefully control the LED current for the big ones or you will have a problem. Electronic regulation of the current to very close tolerances is best.
BTW, these quickies you did with the LED arrays are impressive - much more useful light than I expected. Smile













Well i'm finally done!!!! dam it took forever to get those LEDs.
Although this time i ran into some trouble ...where one row of 4 leds didn't light up and then one didnt light up also..so i checked and it turned out the row of 4 didnt have a resistor on it and the one the didnt light up was touching another led lead
Tomorrow im gonna wire them up permenatly to the car, plus fuse them and place a resistor and led in parallel with the fuse so if a fuse blows i'll know about it. I think im gonna use the stock location for were the factory fog light wiring is, we'll see....
Anyways thanks for all the responses and if enough people like'um and request it, I'll do a write up for them...it's pretty darn easy you just need alot of patients.
oh and just a reminder if you do decided to do this make sure you buy all 120 leds at once becuase i bought 60, 60 and one side is a liiiiiiiiiiiiiitle brighter than the other you can't notice unless you staaaaaare at them.
Now if i can just find some fog
*edit
Just one more thing...I'll will still pursue making lenses for these although that will take some time cause i dont!! want something that will look cheap...AND i'm taking a trip to AZ so that will be a road test for these foglights and we'll see how they hold up. I'll have them on the whole way appox. 5-6 hours. a true test.
Originally Posted by Tomas
Hmmmmmmm...
Wonder how amber LEDs would look...
Wonder how amber LEDs would look...

oh and i havent seen any super bright bi color leds...
An idea for you protective lenses:

JUst use tape to build an edge around the plastic trimpiece, pour in the epoxy, let it set. I'd think about 1/4" thick would be adequate. Then sand shape and polish. You could even tint the epoxy yellow to turn them into proper fogs... cost, about 10 bucks.
Killer DIY, by the way. Extremely well done.

JUst use tape to build an edge around the plastic trimpiece, pour in the epoxy, let it set. I'd think about 1/4" thick would be adequate. Then sand shape and polish. You could even tint the epoxy yellow to turn them into proper fogs... cost, about 10 bucks.
Killer DIY, by the way. Extremely well done.
Keep in mind that if you pour on epoxy or any other coating IN CONTACT with the fronts of the LEDs, you will be destroying their ability to aim/focus their light output. The front of the LED is a LENS...
What you need is flat Lexan or something similar cut to shape and placed in front of the LEDs if you want additional protection for them...
What you need is flat Lexan or something similar cut to shape and placed in front of the LEDs if you want additional protection for them...






