DIY Modular LED-Light

Looks great! Eager to see it completed and running.

Looks really great! Nice project

Originally Posted by guod

hey,

here is a short brief of my Projekt
First: Layout; Spectrum
24W for the LEDs, 1W for the Fan
a Look at the Prototyp
it woks but soldering looks bad
Second: Case & Cooling
Prototype size with 37.0 x 10.5 x 7.0 cm
Heatsink Temp. stays below 5K over Ambient-Temp. /pretty coool
The Fan also work very silent.
some Ideas to Drive two Moduls
nice Weekend to all

Hi it looks great !
I especially like the quality of the drawings, and what is this spectrograph images you got embedded in the drawing , very interesting
I got these 4 questions when looking at you post.

1. How many mA are used to run the fan?
2. What's the function of BD438 and the diodes when using a CCdriver ?
3. What's the function of the 4 effect resistors in the button and the transistor ?
4. where did you buy the LEDs ?

Edit: no.2 Cut the power if one module blows off, it could look like.

Excellent project guod!! Golden dragons, excellent thermal design, modular... I think we've got ourselves a winner!!
Some things don't really seem necessary as Rasser mentioned but maybe you can explain, other than that I am thrilled!
Keep us updated

bonus: see what wonders the GD+ can do here http://bit.ly/MNaM3R

I especially like the quality of the drawings, and what is this spectrograph images you got embedded in the drawing , very interesting

Thanks Rasser
for the spectrograph images google after "LedEngin Proposal and Tools" and Download the Excel-sheet.
table cw5500 cell D102 is linked to table All_spectra_101212 cell O11 thats wrong change this to cell O13. same for table ww2900: D102 O13 > O11


1. How many mA are used to run the fan?
roundabout 70 mA,

2. What's the function of BD438 and the diodes when using a CCdriver ?
Edit: no.2 Cut the power if one module blows off, it could look like.
your answer is correct.

3. What's the function of the 4 effect resistors in the button and the transistor ?
"current-mirror"

4. where did you buy the LEDs ?
reichelt.de # they have only the Emitters
leds.de # StarMCPCB & premounted Leds
some specials
http://www.conrad.de/ce/de/product/1...05065&ref=list
http://de.rs-online.com/web/p/led-zubehoer/7208933/

and some pics from my other light
http://s1073.photobucket.com/albums/w399/guvoo/

a little break in my projekt, killed 2 red led on one modul

gd630.jpgreddead.jpgredshort.jpg

Aww, that's too bad! How did they break?

Looking forward to seeing this up and running, i was thinking of making a modulad diy led light so im glad i get to see other peoples attempts first, by the way it looks GREAT!