<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1437870419945_3916"><span id="yui_3_16_0_1_1437870419945_3951">Huge library of resource on dive lighting on the candle power forum.</span></div><div id="yui_3_16_0_1_1437870419945_3916" dir="ltr"><span id="yui_3_16_0_1_1437870419945_4151"><a href="http://www.candlepowerforums.com/vb/showthread.php?292465-DIVE-LIGHTING-LIBRARY&s=e165636eb922ded6561aff24673f5db1" id="yui_3_16_0_1_1437870419945_4149">DIVE LIGHTING LIBRARY</a><br></span></div><div style="width:450px; font-family: 'Georgia', 'Times', 'Times New Roman', 'serif';margin-top:5px; margin-bottom: 5px; background-color: #ffffff;" contenteditable="false" id="enhancrCard_0" class="link-enhancr-attachment link-enhancr-element richcompose-card"><table class="link-enhancr-element" cellspacing="0" cellpadding="0" border="0" style="width:450px; height:auto; 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font-weight: normal;margin-bottom: 3px; font-size: 18px; line-height: 21px; max-height: 43px; color: #000000; overflow: hidden !important; display: inline-block;" id="yui_3_16_0_1_1437870419945_4180">DIVE LIGHTING LIBRARY</span></a><div style="font-size: 13px; line-height: 20px; color: #999999; max-height: 81px; font-family: 'Georgia', 'Times', 'Times New Roman', 'serif';overflow: hidden;" class="link-enhancr-card-description link-enhancr-element">TOGGLE SWITCH: http://si.farnell.com/otto-controls/t7111b5/switch-spst-ip68/dp/1138735 (ON/OFF- for other posibilities check catalogue (ON-OFF-ON ; momentary ON-OFF-ON,......) http://www.apem.com/toggles.html APEM USA - general http://www.ottoexcellence.com/sh...</div></div></div></td></tr><tr id="yui_3_16_0_1_1437870419945_4194"><td colspan="2" class="link-enhancr-element" style="height: 6px; background-color: #ffffff; font-size: 0pt; border-collapse: collapse;" id="yui_3_16_0_1_1437870419945_4193"><div class="link-enhancr-element" style="height: 6px; 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border-collapse: collapse;" id="yui_3_16_0_1_1437870419945_4190"><div class="link-enhancr-element" style="height: 9px; background-color: #ffffff; font-size: 9pt;" id="yui_3_16_0_1_1437870419945_4189"></div></td></tr><tr class="link-enhancr-element"><td class="link-enhancr-element" colspan="7" style="height: 1px; background-color: #e5e5e5; font-size: 1px; border-collapse: collapse;"><div class="link-enhancr-element" style="height: 1px; background-color: #e5e5e5; font-size: 1px; line-height:0px"> </div></td></tr></tbody></table></div><div id="yui_3_16_0_1_1437870419945_3916">Alan</div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1437870419945_3950"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1437870419945_3949"> <div dir="ltr" id="yui_3_16_0_1_1437870419945_3948"> <hr size="1" id="yui_3_16_0_1_1437870419945_4153"> <font size="2" face="Arial" id="yui_3_16_0_1_1437870419945_3947"> <b id="yui_3_16_0_1_1437870419945_3946"><span style="font-weight:bold;" id="yui_3_16_0_1_1437870419945_3945">From:</span></b> hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, July 26, 2015 12:19 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] LED Lights<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1437870419945_4262"><br>I find that I either need light or not. I used to think dimming would be good, but now I would say it is a waste of time. <br>Hank<br>--------------------------------------------<br>On Sat, 7/25/15, Ken Martindale via Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br> Subject: Re: [PSUBS-MAILIST] LED Lights<br> To: "'Personal Submersibles General Discussion'" <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> Received: Saturday, July 25, 2015, 5:53 PM<br> <br> #yiv7943653100<br> #yiv7943653100 --<br> <br> _filtered #yiv7943653100 {font-family:Helvetica;panose-1:2<br> 11 6 4 2 2 2 2 2 4;}<br> _filtered #yiv7943653100 {panose-1:2 4 5 3 5 4 6 3 2 4;}<br> _filtered #yiv7943653100 {font-family:Calibri;panose-1:2 15<br> 5 2 2 2 4 3 2 4;}<br> #yiv7943653100 <br> #yiv7943653100 p.yiv7943653100MsoNormal, #yiv7943653100<br> li.yiv7943653100MsoNormal, #yiv7943653100<br> div.yiv7943653100MsoNormal<br> {margin:0in;margin-bottom:.0001pt;font-size:12.0pt;}<br> #yiv7943653100 a:link, #yiv7943653100<br> span.yiv7943653100MsoHyperlink<br> {color:blue;text-decoration:underline;}<br> #yiv7943653100 a:visited, #yiv7943653100<br> span.yiv7943653100MsoHyperlinkFollowed<br> {color:purple;text-decoration:underline;}<br> #yiv7943653100 span.yiv7943653100EmailStyle17<br> {color:#1F497D;}<br> #yiv7943653100 .yiv7943653100MsoChpDefault<br> {font-size:10.0pt;}<br> _filtered #yiv7943653100 {margin:1.0in 1.0in 1.0in 1.0in;}<br> #yiv7943653100 div.yiv7943653100WordSection1<br> {}<br> #yiv7943653100 These are standard reflectors made<br> for the 29 LED array, they are not expensive but have not<br> actually found the cost yet. They are made out of plastic but<br> metal ones are also available. Have you a suggestion? Now’s the<br> time to make changes. The beam angle of the array is 120<br> degrees to 50% falloff which will be modified by passing<br> through the proposed flat port. Don’t know by how much,<br> haven’t looked at that problem. Take a look at the spec on the web<br> forum. New release today from Cliff and I. Dimming seems to be the present<br> issue, to dim or not to dim. Appreciate your<br> comments, Ken From: Personal_Submersibles<br> [mailto:<a ymailto="mailto:personal_submersibles-bounces@psubs.org" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>] On<br> Behalf Of Alan James via Personal_Submersibles<br> Sent: Saturday, July 25, 2015 5:58 PM<br> To: Personal Submersibles General<br> Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> Subject: Re: [PSUBS-MAILIST] LED<br> Lights Ken, in your latest<br> document you are stating....There are a number of reflectors<br> made for this 29 LED Array with beam angles of 18, 28 and 40<br> degreesLooking on my<br> favourite underwater light site, I found the following beam<br> angles...<br> <br> 3 with 85 degree<br> flood, 1 with 85 & 32 spot option, 2 with 77 or 30, 2<br> with 75 or 38 & 1 with 65 flood.It seems up round<br> 80 degrees is the most popular.I like the idea of<br> being able to interchange reflectors to have either a wide<br> or narrow beam.To get the 80<br> degree flood we would need to create a housing so that the<br> emitter was near enough to the lense to be able to<br> get that wide angle. With a reflector that was more narrow<br> we could then reduce the angleto<br> suit.There are miriads<br> of reflectors on the Deal Extreme site (search on<br> reflector). These are usually for flash lights& bike lights<br> so not sure if we would get an 80 degree angle.Here is a bridgelux<br> 80 degree reflector but about 3" diameter.http://darkoo.en.alibaba.com/product/60081774368-221072235/Bridgelux_COB_led_reflector_DK7560_REF_K_B_75mm_80_degree_white_reflector_high_efficiency_new_product.htmlI can do an<br> extensive Google on this, but any thoughts on this direction<br> first?AlanFrom: Alan James via<br> Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> To: Personal Submersibles General<br> Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> <br> Sent: Sunday, July 26, 2015 9:17<br> AM<br> Subject:<br> Re: [PSUBS-MAILIST] LED Lights Cliff,the retaining ring<br> for the lense could easily be made larger<br> &have holes drilled<br> for attachment, if people wanted to modify the design for<br> there own purposes. Also<br> noted on the D.S.P.&L. site that they have multiple<br> options for differentbrands of<br> connectors. Again just make the thread on our generic<br> housing for whateverconnector or blue<br> globe cable gland we want.Alan From: Cliff Redus via<br> Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> To: Personal Submersibles General<br> Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> <br> Sent: Sunday, July 26, 2015 2:17<br> AM<br> Subject: Re: [PSUBS-MAILIST] LED<br> Lights Alan, my thinking<br> is that with the flange, you could mount the light either<br> way. On the new boat I am designing, I am planning a FRP<br> recess so that outside of the flange is flush with the<br> outside of the FRP shell. Would still need to cut a hole<br> were the body passes through the FRP shell. Yes this does<br> reduce the convection heat transfer from the light but I was<br> thinking of leaving say a 3/8 clearance around the recessed<br> flange. I don't see any problem with either approach<br> to sealing on a MPB by using a neoprene flat<br> gadget.<br> Cliff On Fri, Jul 24,<br> 2015 at 3:58 PM, Alan James via Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> wrote:<br> <br> Cliff,I was thinking of<br> fitting the light in to a bowl<br> shapedrecess in the<br> fairing / ballast tank, whereas you were<br> proposingcutting a hole out<br> & fitting it in. In hindsight your idea is<br> betterbecause my idea<br> would inhibit the heat dispersion due to the<br> fiberglasssurrounding the<br> light fitting.Alan<br> From: Cliff Redus via<br> Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> To: Personal Submersibles General<br> Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> <br> Sent: Saturday, July 25, 2015 8:43<br> AM<br> Subject: Re: [PSUBS-MAILIST] LED<br> Lights<br> Alan, I am visual<br> kind of guy. Can send me sketch of what you are describing<br> and we can talk.<br> Cliff<br> On Fri, Jul 24,<br> 2015 at 3:23 PM, Alan James via Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> wrote: Looks a good solid<br> light Cliff.On looking at the<br> perpendicular cable entry, I was thinking<br> weneed a back entry<br> for the purposes of mounting in to a<br> housingin the fairing as<br> you have requested in your list.I am looking at<br> mounting in to ballast tanks so will create the<br> shape of the light in the<br> molding to receive it. If there was a<br> threadedextension on the<br> back of the light it could slot through a hole & be<br> securedwith a nut. This<br> would make it easier to seal off the ballast tanks<br> inmy<br> situation.Alan<br> From: Cliff Redus via<br> Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> To: Personal Submersibles General<br> Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> <br> Sent: Saturday, July 25, 2015 1:55<br> AM<br> Subject: Re: [PSUBS-MAILIST] LED<br> Lights<br> Ken, if you go to<br> Youtube and do a search on https://youtu.be/D7VnwODU7vk,<br> or 5000 Lumen Bridgelux Vero 18 LED light, you will see a<br> short video of the light.<br> Cliff<br> On Thu, Jul 23,<br> 2015 at 3:29 PM, Ken Martindale via Personal_Submersibles<br> <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> wrote: Cliff, How do I look at<br> them?? Ken From:<br> Personal_Submersibles [mailto:<a ymailto="mailto:personal_submersibles-bounces@psubs.org" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>]<br> On Behalf Of Clifford Redus via<br> Personal_Submersibles<br> Sent: Thursday,<br> July 23, 2015 4:18 PM<br> To: Personal<br> Submersibles General Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> Subject: Re: [PSUBS-MAILIST] LED<br> Lights Now that Jon has<br> the forum site set up for the LED light project, my<br> suggestion is to move the discussion to the forum site<br> called out in Jon's email. BTW, I have uploaded to the<br> site the wiring diagram and housing drawings for the 5000<br> Lumen light that was designed by the ME students I was<br> mentoring last year. Cliff On Thu, Jul 23,<br> 2015 at 2:55 PM, Ken Martindale via Personal_Submersibles<br> <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> wrote:Doing the dimming<br> electrically is easy but the problem is the extra wiring and<br> where do you mount the Potentiometer? We can include the<br> wires in the cable for use as an option this also<br> complicates the cabling. Instead of two wires we would<br> require 4 wires. Personally I also<br> like the dimming since it will extend the time you can use<br> it out of the water. Anybody also like or dislike? Cliff<br> would like to delete. You guys be sure to<br> keep reading the spec. it will have almost daily updates for<br> a while. Ken From:<br> Personal_Submersibles [mailto:<a ymailto="mailto:personal_submersibles-bounces@psubs.org" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>]<br> On Behalf Of Alan James via Personal_Submersibles<br> Sent: Thursday, July 23, 2015 3:31 PM<br> To: Personal Submersibles General<br> Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> Subject: Re: [PSUBS-MAILIST] LED<br> Lights Cliff,<br> Ken,I like the dimming<br> option. The 10,000 lumens may be too much light<br> insome low visibility<br> conditions where there is a lot of back<br> scatter.The 5,000 lumen<br> option may act like a fog<br> light.Also I am thinking<br> of having lights mounted to the side which may<br> notneed to be as<br> intense.Depth rating....<br> looking at the drawings of various 10,000 meter light<br> housings,it seems simple to<br> achieve a reasonable depth without much more<br> cost.Potting the<br> board..... I would be careful about what was potted in case<br> some of thecomponents needed<br> to get rid of a bit of<br> heat.Mechanical<br> housing..... with you on that one Cliff. Like the idea of<br> the recessed light.Alan From: Clifford Redus via<br> Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> To: Personal Submersibles General<br> Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> <br> Sent: Friday, July 24, 2015 4:06<br> AM<br> Subject: Re: [PSUBS-MAILIST] LED<br> Lights Ken, good first<br> pass at the specs. Below are comments. BTW, I will post<br> these here as I have not been able to get the activation<br> code back yet on registering at the<br> forum. Item 2.1 DC<br> Voltage. If it were me, I would stick with nominal battery<br> bank voltages of 24 and 36 VDC. When I switch to MK 101<br> thrusters, I dropped my main battery bank voltage to 36VDC<br> my instrumentation bus is 24VDC. Would need a<br> single fuse holder to accept fuses to handle different<br> nominal voltages. Item 4.0 Depth<br> Requirement. In the spirit of keeping cost down, I think<br> 500 meters (1640 ft) would be more than enough. I know<br> Scott is designing a deep diving boat but is any one else<br> shooting for more than<br> 500m? 6.0 Dimming. I<br> would omit the ability to dim the light. Yes I know it is<br> easy from an electrical point of view but it forces us to go<br> with more pins on the subsea connector. I am thinking on<br> installing multiple lighs so I could just control on/off<br> for each light. I could go either way on this but in the<br> spirit of KISS, I vote to omit<br> dimming. 8.3 Ports I would<br> change plastic to acrylic. I don't think we will end<br> up here but if we do, we can use PVHO flat view port calcs<br> to size the acrylic lens. 9.0 Printed Wiring<br> Boards. I really like the way the Minn-Kota motor<br> controller PWBs are potted. Rather than using the spray on<br> hydrophobic coatings, to me we should pot the board (accept<br> for access to fuse). Therefore suggest changing the word<br> coated to potted. 11.0 Mechanical<br> Housing. I suggest. The LED panel light and PCB shall<br> be contained in a single 1-atm flange mounted<br> cylindrical housing with a low profile that can be recessed<br> in a FRP shell with attachment screws from the rear of the<br> flange. The housing should contain a single 29 LED Array<br> rated at 10,000 lumens with a rated power of 91-140<br> lumens/W (109-71W). Mounting holes will be provided for<br> an optional SS yoke style support bracket. <br> Material: Hard<br> anodized 6061-T6 or 7071-T6 TBD (I have a grey beard<br> machinist friend that owns a machine shop. He loves<br> 7071-T6 as it is a dream to machine and stronger than<br> 6061-T6. On Thu, Jul 23,<br> 2015 at 9:52 AM, Ken Martindale via Personal_Submersibles<br> <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> wrote: Cost is critical.<br> The electronics should be a small part of the cost. The<br> housing might be the most expensive. Hope you guys are<br> reading the specification. Ken From:<br> Personal_Submersibles [mailto:<a ymailto="mailto:personal_submersibles-bounces@psubs.org" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>]<br> On Behalf Of Clifford Redus via<br> Personal_Submersibles<br> Sent: Thursday,<br> July 23, 2015 10:18 AM<br> To: Personal<br> Submersibles General Discussion <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> Subject: Re: [PSUBS-MAILIST] LED<br> Lights Jon, thanks for<br> setting up the forum. I am assuming we can post files as<br> well. I agree low cost<br> is important but having a functioning light is as well. <br> OTS LED utility lights like that one you noted are not an<br> option unless they can be potted. To me the best way to<br> keep the cost low, is to publish construction drawings of a<br> 1-atm DIY housing that a psubber could machine or have<br> machined by a friend, and publish a design of a PCB that<br> could be easily fabricated using one of the PCB online<br> sites like ExperessPCB www.expresspcb.com and<br> DIY populate the board. As a group, we design and build a<br> prototype that I can test in my shop. If it works as<br> designed, then we post to the psubs site a report, that<br> includes the design drawings, circuit diagram, parts list<br> and test<br> results. Getting a<br> consciences on the design spec is the first<br> step. Cliff On Wed, Jul 22,<br> 2015 at 10:11 PM, Jon Wallace via Personal_Submersibles<br> <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> wrote:<br> My<br> three words of advice...cost, cost, cost.<br> <br> One measure of a success for<br> this project will be how many people actually build/use<br> it. If it costs more to manufacture than just purchasing<br> something like <a href="http://www.surpluscenter.com/Electrical/Lights/DC-Mobile-Equipment-Lights/12-24-VDC-3120-LUMEN-16-LED-UTILITY-FLOOD-LIGHT-12-999-B.axd" target="_blank">http://www.surpluscenter.com/Electrical/Lights/DC-Mobile-Equipment-Lights/12-24-VDC-3120-LUMEN-16-LED-UTILITY-FLOOD-LIGHT-12-999-B.axd</a><br> off the shelf then it's real world application by<br> psubbers may be limited.<br> <br> Over-spec'ing the design above requirements<br> for typical recreational operations (ie 10,000 psi<br> capability) is likely going to drive up the cost. Also,<br> let's remember that "cheap", "low<br> cost", and "good price" are relative terms<br> for a diverse group like PSUBS so include realistic<br> estimates of parts and manufacturing especially if tooling<br> is required.<br> <br> Jon<br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> <a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br> <a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles%C2%A0" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles </a><br> _______________________________________________<br> Personal_Submersibles mailing list<br> <a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br> <a 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