<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Rick,</div><div id="AppleMailSignature">I spent hours & hours of time looking at underwater pool lights, dive lights & anything I</div><div id="AppleMailSignature">could adapt easily. Ordered a lot of stuff but didn't find anything suitable.</div><div id="AppleMailSignature">These high powered dc leds are an evolving technology & you might find a pool</div><div id="AppleMailSignature">light or garden flood light that you can oil fill. </div><div id="AppleMailSignature">Most of the components in my light were cheap. Led $6.50, lens only a couple</div><div id="AppleMailSignature">of dollars, driver nearer $50 but you can pick them up cheap without dimming.</div><div id="AppleMailSignature">They have a small potentiometer on them & you can turn the voltage down for a </div><div id="AppleMailSignature">crude dimming function. The gaskets I had to get cut to size. The stainless bolts</div><div id="AppleMailSignature">were one of the bigger expenses. But the biggest pain was making them. I had to</div><div id="AppleMailSignature">make jigs for drilling angled holes from the wiring to a central port at the back</div><div id="AppleMailSignature">of the light & I built about 3 housings till I got it how I wanted.</div><div id="AppleMailSignature">The led I used was smaller than the standard 36V leds & round which I felt</div><div id="AppleMailSignature">would put out a more uniform light pattern.</div><div id="AppleMailSignature">Alan </div><div id="AppleMailSignature"><br><br>Sent from my iPad</div><div><br>On 3/02/2018, at 9:07 AM, Rick Patton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">Alan,<div><br></div><div>Very impressive system! I am planning on having 5 on my sub so not sure those would be in my budget...</div><div>Rick</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Feb 2, 2018 at 9:24 AM, Alan via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>Rick,</div><div id="m_2040302114413707654AppleMailSignature">They are 1 atm, not oil filled.</div><div id="m_2040302114413707654AppleMailSignature">I bought the 7000 lm emitter from the manufacturer in China.</div><div id="m_2040302114413707654AppleMailSignature">They make the bridgelux emitters. I had ordered them with the pigtails on</div><div id="m_2040302114413707654AppleMailSignature">as I didn't want to overheat the emitter with my cheap soldering set up.</div><div id="m_2040302114413707654AppleMailSignature">The driver is the circuit board you can see with a potentiometer for dimming</div><div id="m_2040302114413707654AppleMailSignature">coming off it. This is a buck / boost constant current driver, meaning it can</div><div id="m_2040302114413707654AppleMailSignature">take any voltage between 12-54V & boost it up to or drop it down to 36V &</div><div id="m_2040302114413707654AppleMailSignature">also maintain a constant current. Led's get hot & draw more current so need a</div><div id="m_2040302114413707654AppleMailSignature">cc driver to stop them burning out. Not a problem if the voltage is below a certain </div><div id="m_2040302114413707654AppleMailSignature">threshold. The driver was manufactured to my specs in China. As said before, </div><div id="m_2040302114413707654AppleMailSignature">I am going to have this modified. I ordered the housing from a different supplier.</div><div id="m_2040302114413707654AppleMailSignature">The led is screwed on to the base with a heat transferring paste. I have tiny teflon</div><div id="m_2040302114413707654AppleMailSignature">washers under the screws. There is a teflon gasket that the lens sits on &</div><div id="m_2040302114413707654AppleMailSignature">another as a buffer sitting on the led screws as protection against wires shorting</div><div id="m_2040302114413707654AppleMailSignature">on the housing where they are soldered on to the led.</div><div id="m_2040302114413707654AppleMailSignature">I have 4 o-ring seals, two in the base, one at the side of the lens & one on top</div><div id="m_2040302114413707654AppleMailSignature">of the lens. </div><div id="m_2040302114413707654AppleMailSignature">At the top of the photo you can see a mold I made for a cable support & tidy</div><div id="m_2040302114413707654AppleMailSignature">up of the wiring. The wiring was embedded in resin then overlaid to an inch</div><div id="m_2040302114413707654AppleMailSignature">up the pvc wiring with a pvc glue before the polyurathane cable support was</div><div id="m_2040302114413707654AppleMailSignature">molded over it. ( not shown)</div><div id="m_2040302114413707654AppleMailSignature">6 bolts run right through it with nuts at the back holding it all together.</div><div id="m_2040302114413707654AppleMailSignature">I can mount it using these bolts. longer bolts can be used for mounting if</div><div id="m_2040302114413707654AppleMailSignature">necessary. Alternatively the front plate can be made wider with additional</div><div id="m_2040302114413707654AppleMailSignature">holes for mounting to a hole in the superstructure etc.</div><div id="m_2040302114413707654AppleMailSignature">The housing is aluminium & was marine anodised.</div><div id="m_2040302114413707654AppleMailSignature">I do have drawings on my computer & machining notes that may need </div><div id="m_2040302114413707654AppleMailSignature">updating. The light was tested to 2000ft but would probably go at least</div><div id="m_2040302114413707654AppleMailSignature">4000ft.</div><div id="m_2040302114413707654AppleMailSignature">You are welcome to more detail if you are still keen to make some up.</div><div id="m_2040302114413707654AppleMailSignature">Cheers Alan</div><div id="m_2040302114413707654AppleMailSignature"><br><image1.jpeg><br><image2.JPG><br></div><div><div class="h5"><div><br>On 3/02/2018, at 6:35 AM, Rick Patton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.<wbr>org</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">Hi Alan,<div><br></div><div>Did you buy just a 7,000lm array and put them in a housing or did they already come in a housing and you filled them like Hank did? Not sure what a driver is either?? Is it a PWM that acts like a driver and a dimmer as well? Do you have any pictures on your projects and photos page of this I can look at and could you send me the particulars offline on where you bought the drivers and arrays? and Cliff, please send me what you have as well.</div><div>Mahalo!</div><div><a href="mailto:satwelder@gmail.com" target="_blank">satwelder@gmail.com</a></div><div>Thanks</div><div>Rick</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 1, 2018 at 12:31 PM, Alan via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.<wbr>org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>Rick,</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">I have built my led 7000lm 36V lights & are going to use 2 out front.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">I have used them on a boat & in the bush & don't consider them an </div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">overkill. I think with the clear water in Hawaii you would want more</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">lumens as there will be a further distance that you can see night diving.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">I have dimmers on mine for low visibility diving, as the back scatter from</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">the muck in the water will be blinding.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">Led's need a driver to give them constant current & of lesser importance</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">constant voltage. They are reasonably voltage tolerant as long as the current </div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">is controlled. I mistakenly had a 36V led running off 80V. </div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">You can build your own but for me it was a lot of mucking about designing,</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">sourcing lenses from China etc. I had my led driver designed & made</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">specifically for me by a Chinese firm. I am not happy with aspects of the</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">design as there is a certain part that needs heat sinking & default mode</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">is on if the wiring comes apart. So will be re-ordering an updated driver</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">some time in the future.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">You can find suitable buck boost drivers on ebay as Alec did, but not with</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">dimming.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">They don't get too hot if you run them in water & heat sink them to a base.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">The easiest idea, as Hank says is to find a suitable off the shelf light that</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">you can oil compensate. The drivers however have electrolytic capacitors</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">that are vulnerable to pressure, so if the driver is in the light unit it could</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">fail under pressure if compensated.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">I have subjected an led on it's own to 2000psi & it survived.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">Most of the high power leds are around 36V.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">Let me know if I can help.</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">Emile sells an led light!</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature">Cheers Alan</div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature"><br></div><div id="m_2040302114413707654m_-6189407242363838941AppleMailSignature"><br><br>Sent from my iPad</div><div><div class="m_2040302114413707654h5"><div><br>On 2/02/2018, at 10:33 AM, hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.o<wbr>rg</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div></div>
<div>Rick,</div><div>You can keep it real simple and just buy water proof lights (LED) and oil fill them. Just inspect the light to make sure you can drill and put a filler plug in. I have great luck with a 24,000 lumen light bar. I am actually buying a clear acrylic cylinder to put my light into. Alec has had luck with this also, maybe he can suggest the particular light to use.</div><div>Hank</div><div><br></div>
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On Thursday, February 1, 2018, 2:06:41 PM MST, Rick Patton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.o<wbr>rg</a>> wrote:
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<div><div id="m_2040302114413707654m_-6189407242363838941yiv3053752749"><div dir="ltr">I have been experimenting with my LED exterior lights which is a field I know nothing about which makes it even that much more frustrating and wanted to get feedback from those who have had success so far using them.<div><br><div>I was planning on using incandescent lights but everyone I talk to say that LED is the only way to go. I guess my reasoning for staying with incandescent was that it was a no brainier for me but I liked what I heard about LED. I initially figured that if 10 lumans is good 10,000 is much better but I am finding out that once you get up to that high a luman, a lot of things kick in that you have to deal with!</div><div><br></div><div>I also am thinking that I can probably get away with a heck of a lot less lumans due to the visibility that we have here in Hawaii so maybe all I need are 5,000 luman lights which put out a lot less heat and don't have to deal with some of the issues that a 10,000 luman light would.</div></div><div><br></div><div>All input appreciated!</div><div>In the dark in Hawaii! not to mention fake missile alerts!!</div><div><br></div><div>Rick</div></div></div>______________________________<wbr>_________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.or<wbr>g</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/l<wbr>istinfo.cgi/personal_submersib<wbr>les</a><br></div>
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