LED DIY : Making of a "DJ SET "-style grow led light .

[stardustsailor]

Something like those would not be enough ,I guess ,huh ?



(Yes ..I'm quite messy with my stuff..)

 

[guod]

(Yes ..I'm quite messy with my stuff..)

ha...no pic allowed from my workbench

 

[guod]

let us use the 25x25alu on the fan-plate

 

[stardustsailor]

Okey-dokey ...
There's plenty of it (ally ) already ...
Now ..Help me out a bit ...
To place contacts of the drivers onto the pcb ,I've to make a "pattern " of a new component (-the bucks- ) first ,right ?

 

[guod]

first change 1.27 raster to 2.54 (standard for most components)
the layout for recom Bucks
http://www.recom-international.com/pdf/Lightline/RCD-48.pdf
for the rest i will better make some pics.
back in a few hours.

 

[guod]

my idea for place and mount the Fan-driver

 

[stardustsailor]

Noo.I've the buck layout ..
Ah ..yes the raster ..Yes ..Driver's pins have 2,54 mm distance ..
Ok ...(you thought I knew what the "raster " was ? Oh Guod ....I'm a "biology-lover " ...
Here-at electronics- I'm totally out of my waters ..Although my father is an electronic technician ...
Anyway ....
Just for test I made a pcb layout ...
Pasted image on same dimensions rectangular shape on S.up ..And .....
Models just dropped in place !
(tried to redesign pcb with LM's "cooling back " on outer side of pcb ,like you said ...link of image was broken ...)

..............===>>>>>....
Model is uploaded for you to experiment better -if you wish -in different placements ....
( 1/4 W resistor color bands are not colored with the correct values .maybe I'll upload the correct ones...)

 

[guod]

a simple way for Recombucks

create a pad
change width, height to 1.3mm; hole diameter to 0.6mm
copy this pad
place 7 of them as shown by recom
group this layout
copy and place as needed

for the connection between the Bucks( V+; V-) set the coppertrace width to 1.2mm. we are running here about 2A.
all other traces can be smaller (0.33 for example)

the solderpads for the leds, etc are also only a coppertrace.
make them big as possible we have to solder the wire here.
1.2mm for the leds will be OK. (0.25mm² wire)
2.5mm for the Powerwires (0.5mm² wire)
minimum length for them 6mm

 

[guod]

PCB-Layout for Fan-driver

 

[stardustsailor]

a simple way for Recombucks

create a pad
change width, height to 1.3mm; hole diameter to 0.6mm
copy this pad
place 7 of them as shown by recom
group this layout
copy and place as needed

for the connection between the Bucks( V+; V-) set the coppertrace width to 1.2mm. we are running here about 2A.
all other traces can be smaller (0.33 for example)

the solderpads for the leds, etc are also only a coppertrace.
make them big as possible we have to solder the wire here.
1.2mm for the leds will be OK. (0.25mm² wire)
2.5mm for the Powerwires (0.5mm² wire)
minimum length for them 6mm

Thanx !
I did something before i read this post ..


......P.S. : Your infos are precious ...

 

[guod]

for me it looks like that the Bucks are sitting on the copperside, if so place them on the other side of the PCB

 

[guod]

Vout is connected to 317 Heat-slug. to avoid direct contact with the 25x25 Alu we need a insulating Kit, otherwise we have 28V on the Alu.

http://uk.farnell.com/multicomp/mk3306/insulating-kit-mica-to-220/dp/520214

 

[stardustsailor]

for me it looks like that the Bucks are sitting on the copperside, if so place them on the other side of the PCB

Yes ,copperside is towards drivers ...
I'll change it to outer side ...(copperside facing fan ) ..
Though it myshelf ,how I should put thecopperside ...
Thought that it will be more "safe " to be in the inner side ..
With the expence of drivers not being able to fully contact the pcb (as they have to be soldered from inside ...thus the gap with the pcb ..)
Anyway ...To the outer ...

 

[stardustsailor]

Vout is connected to 317 Heat-slug. to avoid direct contact with the 25x25 Alu we need a insulating Kit, otherwise we have 28V on the Alu.

http://uk.farnell.com/multicomp/mk3306/insulating-kit-mica-to-220/dp/520214

I think that my father has tons of those kits ....(mika sheets + plastic insulating washers -for TO 220 packs )

 

[stardustsailor]

....Ok...DipTrace is really a cool pcb and pad designing software ...
...And a SSL pad .........
....


....
Nice ....
Very nice ...

 

[stardustsailor]

Guod ..
What about plexiglass (or the more expensive Polycarbonate ..) for top cover (lid ) ?

Of a thickness .5 ~ 1 mm ....
Transparent .." See-through" cover for the "baby " ...
I ' ll see how it looks on the model ....

 

[stardustsailor]

.....

Not bad ...

I think ,I might use it ...
Thick plexi ...
Grey tinted maybe....


EU design..
Southern 'n' Nothern(? ) ,together....

Have no doubts about it ....
This is the most efficient led grow light , ever made (or soon to be made ... ) ...
( I bet my left nut on that .... )
....

 

[guod]

i use pvc foam for one of my lights, 3mm thick

http://www.sdplastics.com/pvcx.html
http://www.modulor.de/shop/oxid.php/sid/x/shp/oxbaseshop/cl/details/cnid/AAG/anid/AAGA/lang/1

i buy it local in the diy-shops(Obi)

 

[stardustsailor]

Haven't seen before such material ...
....
It looks really good for making a lid ..

I want your opinion on something ..
Shortly ...
I'm thinking for 3x (custom ordered) mcpcbs' ..
And I'm experimenting ...
What do you think about something like that ?
...........

Ok....And then ...I thought ...Since Osram is doing it .....
(just a "sketch" ,not a carefully designed one .....===> .....

Any remarks or comments on that ?

Edit : Another idea ...
Leds more spread ...

 

[stardustsailor]

I think that I'' go for 3 mcpcbs' of something like this .....
View attachment 2514636....



Or even this .....=> ..(blue areas are "solder masked ")

.....

And some ..." team colors " there ....