Home made DIY LED baby light

  • Thread starter Thread starter Zoomforce
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Re: Home made DIY LED baby light

Kinda.. Kinos have a small metal back and the "cover" folds out as barn doors.. there are grids that velcro in. They are wicked, but if you didnt know better looking at them and the corrugated plastic housing you would think they were cheap :)
 
Re: Home made DIY LED baby light

According to Project X specs, the part you used seems to be WC201-03. It drains 20mA at 3.2v. For the 24 LEDs you are using, it should be 480mA.

If the specs above are right, you are over-volting the devices a bit. Though I am not sure if that changes the color temperature, it probably does a bit.

On the other side consumption might be a bit more than 20mA.

Besides series connect each LED pair, you seem to have used a common pole in the middle (ground?).

How much heat do these babies release? Can you group them more together than you did?

If heat is not too much, you can glue a plastic reflective plastic, like Rosco's, onto the pcb before soldering the parts. Then use a pin from the other side to punch where the LED's legs will go through. Bingo: a reflector to use the whole light you get.

In any case back spill shouldn't be that much, as the LED is specified as to have 20 degrees angle.

If you say you get the same light as a 60W lamp with just 0.5A drain, that's a tenth of what you would get using a portable!

Great achievement!

Where did you get the shoemount?


Carlos
 
Re: Home made DIY LED baby light

Hey... changing the amps changes the temp... the volts doesnt as far as I can tell. The LEd's I got run at 3.2-3.6 volts with 3.4 prefered... LEd's seem fine. It doesnt get hot at all, meaning I can hold my hand on it for ever and it only is a little warm.


As for the back reflector, I dont really need it, because the LED's are very directional and there is no backwards spill. What I need to do is diffuse it more than reflect it.

oh.. BTW.... I just woke up, the lights been running for the last 14 hours on the same battery.... yikes...
 
Re: Home made DIY LED baby light

ah ha... I knew somebody would make them.. they seem to good to not of been. I wonder how much.
 
Re: Home made DIY LED baby light

well the light is starting to dim :) after about 16 hours.
 
Re: Home made DIY LED baby light

I'm impressed enough that I'm ordering some of these to play around with. I'd like to have a no-power-draw version of a taplight, maybe a little opal frost dome over it, something so small (less than 2" square) that it can be placed anywhere, and drawing power off a 9v battery. I can see dozens of uses for 'em. Thanks for jump-starting my brain!

If what you've got is putting out as much light as a 60w incandescent, with comparable falloff, that's just phenomenal!
 
Re: Home made DIY LED baby light

I agree. So many uses for something like this. Illiminating the interior of a car (or at least splashing some light on the talent). Can this be rigged to plug into car lighter?
 
Re: Home made DIY LED baby light

I guess you could do the 12v thing.. would need to add a resistor.

But running for 16+ hours off a standard DVX100 battery, why would you need to?

And Barry, when I was testing this thing I was pretty happy to find that the LEE's design edition sample gel book's gels fit perfectly over the LED's.. so if you made a little housing with a slot you could just drop in one of the 300+ gels/diffsion etc.. since there is no heat :) U can get all creative.
 
Re: Home made DIY LED baby light

I would have to pay someone really. I just am not going to be doing this on my own. :(

But I can shotgun a beer.
 
Re: Home made DIY LED baby light

ha ha.. maybe Barry will make one for you
 
Re: Home made DIY LED baby light

Me making electronics is kind of like watching someone make sausage -- you really, really don't want to see what's going into it. I have, in the past, wielded a soldering iron, but I try to avoid it whenver possible. I just got through rigging a DVD/MP3/16:9 LCD system in my car, it was really painful (for the car as well as for me!)

So no, I'll tinker around with it, especially since I found what appears to be a ready-made kit, but I don't plan on getting in the electronics manufacturing business...
 
Re: Home made DIY LED baby light

hey what ready made kit have you found? the spotlight thing?
 
Re: Home made DIY LED baby light

Yep. (don't anybody outbid me on ebay, or there'll be some smacking to go around!)

I figure those are so unbelievably tiny, 1.5" square, that maybe something useful could be made out of clip-together modules, so you could use one by itself or stick four of them together or 10 or whatever... and hopefully, with it being designed as a ready-made kit, there'll be less soldering-iron damage to the board, myself, and the environment... ;D

How serious are you when you say that one of these LED's is brighter than the whole strand of LED Christmas lights? I thought the Christmas light strand was a pretty good idea, but not if they're not bright enough to actually do any practical lighting with.
 
Re: Home made DIY LED baby light

[quote author=Zoomforce link=board=Links;num=1071261354;start=25#44 date=12/14/03 at 08:29:41]Hey... changing the amps changes the temp... the volts doesnt as far as I can tell. The LEd's I got run at 3.2-3.6 volts with 3.4 prefered... LEd's seem fine. It doesnt get hot at all, meaning I can hold my hand on it for ever and it only is a little warm.[/quote]

Changing the amps won't change the temperature. The only way to change the amps is changing the battery, and that would only shorten or lenghten how long the LEDs are lit.

Current is related to LED's resistance, which seems to be
about 90 ohms each.

If anything does affect color temp it should be the voltage. If you have a color temp meter you can see if anything changes when going from 3.2 to 3.6v.

[quote author=Zoomforce link=board=Links;num=1071261354;start=25#44 date=12/14/03 at 08:29:41]
As for the back reflector, I dont really need it, because the LED's are very directional and there is no backwards spill. What I need to do is diffuse it more than reflect it. [/quote]

Doesn't the solder on the back get hot?

[quote author=Zoomforce link=board=Links;num=1071261354;start=25#44 date=12/14/03 at 08:29:41]
oh.. BTW.... I just woke up, the lights been running for the last 14 hours on the same battery.... yikes... [/quote]

That's great!


Carlos
 
Re: Home made DIY LED baby light

Hey Zoom,
Awesome job on the Led lights. I just got back from picking up my camera and gack in Houston...and reading back through all the old threads on the setups (for the second time)on the forum.

Is is posibble to make a larger version of this LED rig for larger lighting situations and run off 12 volts?

Great job.
 
Re: Home made DIY LED baby light

zoom, you're awsome. one of the most ingenious people i've come across in the various DV forums on the web. So these LEDs give you a nice even light pattern? Would you need to put a diffuser in front of it? And it looks like you just took a battery charger and fed that into the LED panel? How strong is the light from this model you've built?
 
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