fully WATERPROOF led board (pics)

shortstack · February 23, 2008

so i haven't seen anybody do custom waterproof led boards so i decided to try it. i originally tried silicone but it didn't spread well, then i remembered ABS glue (plumbing stuff) is water proof and its kinda liquidy so i gave it a try and here are the results

note: i put a dab of silicone where i was gonna set the led so it will hold/seal it the used the abs glue to seal all the solder and wire connects.

note: i would recommend using a small paint brush for the fine edges.

let me know what ya think, hopefully we can start playing with led on the outside of the X cause now we know their water proof

storlied · February 26, 2008

It'll suck if you have to repair a something in it..

Great idea though.. let's get creative now..

Nasty350LT1 · February 26, 2008

That will really come in handy if you drive into a lake,
and need to turn on your "Dome Light"

IZwack · February 26, 2008

Nasty350LT1 said:
That will really come in handy if you drive into a lake,
and need to turn on your "Dome Light"

Its a proof of concept -- "hopefully we can start playing with led on the outside of the X cause now we know their water proof"

shortstack -- I would run the test again, except this time, dilute a teaspoon of salt into the glass of water.
Pure water doesn't transfer electrons very well, but ionized salt does.

And if you really want to be picky, use a multi-meter to test resistance (ohms) between the two wires while its in the pure water and again in salt water (but no voltage going into the unit). A short caused by an "leaks" through the salt-diluted environment will probably still allow the LEDs to illuminate because conductivity of the ionized salt (depending on the concentration) is probably fairly low when compared to an LED -- meaning most of the electrons will probably flow through the LED while only a certain percentage will be able to "jump" through the salt-diluted water.

Paraphoe · February 26, 2008

^^^ This guy knows his chit.

Charlie · February 26, 2008

I am curious how it would hold up with the salt, too.

shortstack · February 26, 2008

storlied said:
It'll suck if you have to repair a something in it..

Great idea though.. let's get creative now..

test it before waterproofing it, so u know it works

That will really come in handy if you drive into a lake,
and need to turn on your "Dome Light"

well you could use them as rock lights or anything that could be used outside, or whatever you can thing of. (i also said door ajar

haha )
i'll test it with salt right now

well they uses the abs glue for water proofing abs piping for sewer and like a sump pump which will hold up for a long time, although no electricity is going through, when it dries it hardens unlike silicone

Willard · February 26, 2008

There is also liquid electrical tape, which may be pretty much the same stuff. That's what it looks like. I have used it before to make waterproof LED marker lights for caving. You go a certain way, and put these little lights up along the way. They attach to a 9 volt and just sit there until you come back.

shortstack · February 26, 2008

i think thise stuff might work better cause its more liquidy then electrical tap, you could prob use anything thats water proof.

MustangP51 · February 26, 2008

Great Job, I usually use a good coating of hot glue, silicone, or liquid electrical tape for sealing up projects. How is the coating holding up to the heat generated by the resistors? Does it have good heat transfer?

shortstack · February 26, 2008

haven't really used them longer then a few minutes.

just tested it with salt water and still works fine even shaking the led board in the water

SkanlaxJMO · February 26, 2008

good info thanks for posting

fully WATERPROOF led board (pics)

shortstack

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storlied

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