Building your own underwater Led

[jasun]

What means DOA ?
As I remove the wake plate (it generates splash at wakeboard speed and reduce the wake size), my led are exactly where the upper screws of the plate were. Somewhere in the middle between the bottom of the boat and the swim platform.

I really appreciate that you guys like my concept and you replicate it

Be careful to use inclusion epoxy resin (to keep insects for example)
If you use common resin it will not be crystal clear

DOA = Dead on arrival....

I took the one i have done out with me last night and tested it and it is bright!!!

I used this epoxy, it is used to pour table tops with pics.


I found that it is easier to make them with 2 pours. The first pour fill the cup up 1/2 way so that the PCB just sits on the resin.. (The kinda I used was pretty thin so the PCB wanted to float to the top when i tried to pour it all at once). then once it is hard enough, pour the second half to cap it off. I had a lot of bubbles at first, but they worked their way out before it dried.

I am going to mount the one i have complete as it will be 3 weeks before I get my other bulbs.

[Sdc77]

That's great news guys ! Can't wait to see your finished LEDs.
The resin you used jasun seems good.
I pour 1 time for my 2 LEDs. To do that, you need to glue the pcb to the holder.
I used little plastic sheets to do that because of electronic under the pcb. But I think the best way to do that is to use water bottle cap. Simply glue it to the pcb with hot gun glue, and then the pcb + cap to the holder. Don't forget to weld a longer wire.

Go guys !!!

[jet]

You are a true craftsman. EXCELLENT idea! Way to go man.

[Sdc77]

Thanks jet, I appreciate your comment

[Sdc77]

Guys any news ?

[trayson]

Hi guys,


Then bought 2 home leds, 12v DC, blue, with 24x SMD 5050 leds :



You can go with a 30x SMD bulb : http://dx.com/p/mr16-590nm-5-5w-360-...bulb-12v-65935

So, you bought the Blue LED's but the link you have above is for RED ones.

I did find this on the same site, but noticed that the Red is rated at a lot more lumens...
http://dx.com/p/mr16-470nm-5-5w-360-...bulb-12v-81375

The blue says it is 80 lumens and the red says it's 340 lumens. And the red is priced at a lot less money. Are there brighter blue ones that I didn't find?

I might consider the red if it's really four times brighter and less money. But I would prefer inexpensive blue that is bright...

Thoughts?

[Sdc77]

full blue night shoot

[Sdc77]

hey trayson,
We post at the same time.
Yes it's normal that red has more lumen than blue.
For the same power of led, you will have for example :
- white = 1000 lumen
- Green = 500 lumen
- Red = 250 lumen
- blue = 100 lumen

Most of the Underwater led builders are lyers, because they rate same lumen for different color at same power, it's just impossible.

You can go with the 30x5050 led blue, I use 24x5050 blue and you can see the brightness of my leds.
But, be sure that in red, you will get more lumen

[jasun]

here is mine:




I went to install the one last night but i need to move my tank to fish my wire out and I didnt feel like moving it as I just filled it up...


I was thinking about doing 2 between the drainplug and exhaust and then 1 on each side of the outside of the exhaust. 4 total.

[sybrmike]

Just an FYI on the light output. Water absorbs light preferentially based on wavelength - reds and yellows are first with blues being last. So a higher output red may not throw light any farther than a lower output blue...