<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_1437961256619_2682"><span id="yui_3_16_0_1_1437961256619_2769">Correction, </span></div><div id="yui_3_16_0_1_1437961256619_2682"><span id="yui_3_16_0_1_1437961256619_2812">wire the potentiometer in to the lights 24 or 36 volt system.</span></div>Alan<br>  <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1437961256619_2818"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1437961256619_2817"> <div dir="ltr" id="yui_3_16_0_1_1437961256619_2816"> <hr size="1" id="yui_3_16_0_1_1437961256619_2815">  <font size="2" face="Arial" id="yui_3_16_0_1_1437961256619_2819"> <b><span style="font-weight:bold;">From:</span></b> Alan James 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> Monday, July 27, 2015 1:33 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_1437961256619_2913"><br><div id="yiv1575108437"><div id="yui_3_16_0_1_1437961256619_2912"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yui_3_16_0_1_1437961256619_2911"><div id="yiv1575108437yui_3_16_0_1_1437957534248_5323"><span>Hi Ken,</span></div><div dir="ltr" id="yiv1575108437yui_3_16_0_1_1437957534248_5323"><span id="yiv1575108437yui_3_16_0_1_1437957534248_10482">I like the idea of the 2000lm option as well. I have read comments on scuba sites</span></div><div dir="ltr" id="yiv1575108437yui_3_16_0_1_1437957534248_5323"><span id="yiv1575108437yui_3_16_0_1_1437957534248_10621">that 2000lm is too much, so being able to drop to that may be handy from the too much light </span></div><div dir="ltr" id="yiv1575108437yui_3_16_0_1_1437957534248_5323"><span id="yiv1575108437yui_3_16_0_1_1437957534248_12424">perspective, </span><span id="yiv1575108437yui_3_16_0_1_1437957534248_12421">as well as for out of </span>water use.</div><div id="yiv1575108437yui_3_16_0_1_1437957534248_5323"><span id="yiv1575108437yui_3_16_0_1_1437957534248_5464">I can't remember seeing any underwater lights with a dimming option.</span></div><div dir="ltr" id="yiv1575108437yui_3_16_0_1_1437957534248_5323"><span id="yiv1575108437yui_3_16_0_1_1437957534248_8886">Here is a $5- LED dimmer not sure if it's suitable but there are some cheap options out there.</span></div><div dir="ltr" id="yiv1575108437yui_3_16_0_1_1437957534248_5323"><a rel="nofollow" shape="rect" id="yiv1575108437yui_3_16_0_1_1437957534248_8879" target="_blank" href="http://www.dx.com/p/xy-d-rk01-mini-manual-led-light-strip-dimmer-beige-12-24v-189633#.VbV_o_mqpBc">XY-D-RK01 Mini Manual LED Light Strip Dimmer - Beige (12~24V)</a></div><div class="yiv1575108437link-enhancr-attachment yiv1575108437link-enhancr-element yiv1575108437richcompose-card" id="yiv1575108437enhancrCard_0" style="width:450px;font-family:'Georgia', 'Times', 'Times New Roman', 'serif';margin-top:5px;margin-bottom:5px;background-color:#ffffff;"><table class="yiv1575108437link-enhancr-element" id="yiv1575108437yui_3_16_0_1_1437957534248_8898" cellspacing="0" cellpadding="0" border="0" style="width:450px;height:170px;display:block;"><tbody id="yiv1575108437yui_3_16_0_1_1437957534248_8901"><tr class="yiv1575108437link-enhancr-element" id="yui_3_16_0_1_1437961256619_3018"><td colspan="8" rowspan="1" class="yiv1575108437link-enhancr-element" style="height:1px;background-color:#e5e5e5;font-size:1px;border-collapse:collapse;" id="yui_3_16_0_1_1437961256619_3017"><div class="yiv1575108437link-enhancr-element" style="height:1px;background-color:#e5e5e5;font-size:1px;line-height:0px;" id="yui_3_16_0_1_1437961256619_3016"> </div></td></tr><tr class="yiv1575108437link-enhancr-element" id="yiv1575108437yui_3_16_0_1_1437957534248_8900"><td colspan="1" rowspan="5" class="yiv1575108437link-enhancr-element" style="width:1px;background-color:#e5e5e5;font-size:1pt;border-collapse:collapse;"><div class="yiv1575108437link-enhancr-element" style="width:1px;background-color:#e5e5e5;font-size:1pt;"> </div></td><td colspan="1" rowspan="5" class="yiv1575108437link-enhancr-element yiv1575108437link-enhancr-image-wrap" id="yiv1575108437yui_3_16_0_1_1437957534248_9225" style="vertical-align:middle;width:168px;height:168px;background-color:#000000;border-collapse:collapse;"><div align="center" class="yiv1575108437link-enhancr-element" id="yiv1575108437yui_3_16_0_1_1437957534248_9224" style="width:168px;"><a rel="nofollow" shape="rect" c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font> </div> <div class="yiv1575108437y_msg_container" id="yiv1575108437yui_3_16_0_1_1437957534248_5755"><br clear="none"><div id="yiv1575108437"><style>#yiv1575108437   --
 
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#yiv1575108437 </style><div id="yiv1575108437yui_3_16_0_1_1437957534248_5754"><div class="yiv1575108437WordSection1" id="yiv1575108437yui_3_16_0_1_1437957534248_5753"><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_5752"><span id="yiv1575108437yui_3_16_0_1_1437957534248_8966" style="font-size:11.0pt;">Down to 10% or 20% of the 10,000 lumens or 1000 to 2000 lumens.</span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_5757"><span style="font-size:11.0pt;">  </span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_5759"><span id="yiv1575108437yui_3_16_0_1_1437957534248_5758" style="font-size:11.0pt;">You are right about sending a current down the third wire but that complicates the drive signal external to the light.</span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_8828"><span style="font-size:11.0pt;">  </span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_5763"><span id="yiv1575108437yui_3_16_0_1_1437957534248_8827" style="font-size:11.0pt;">Do any of the existing lights have dimming?</span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_5760"><span style="font-size:11.0pt;">  </span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_5761"><span id="yiv1575108437yui_3_16_0_1_1437957534248_8826" style="font-size:11.0pt;">I know we are sizing this light like the 5000 lumen light but this light will be larger.</span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_5762"><span style="font-size:11.0pt;">  </span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_8825"><span id="yiv1575108437yui_3_16_0_1_1437957534248_8824" style="font-size:11.0pt;">One other thing, this light will not operate very long without cooling (in air) unless we have a large heat sink. It will not be damaged or degraded if left on in air but will shut off and then back on after cooling. I don’t think we ought to have operation in air as a requirement.</span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_10844"><span style="font-size:11.0pt;">  </span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_10781"><span style="font-size:11.0pt;">Ken</span></div><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_10829"><span style="font-size:11.0pt;">  </span></div><div class="yiv1575108437qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv1575108437yqt0009052366" id="yiv1575108437yqt36235"><div id="yiv1575108437yui_3_16_0_1_1437957534248_8823"><div id="yiv1575108437yui_3_16_0_1_1437957534248_8822" style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;"><div class="yiv1575108437MsoNormal" id="yiv1575108437yui_3_16_0_1_1437957534248_8821"><b><span style="font-size:11.0pt;">From:</span></b><span id="yiv1575108437yui_3_16_0_1_1437957534248_10828" style="font-size:11.0pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>Alan James via Personal_Submersibles<br clear="none"><b>Sent:</b> Sunday, July 26, 2015 7:36 PM<br clear="none"><b>To:</b> Personal Submersibles General Discussion <personal_submersibles@psubs.org><br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] LED Lights</span></div></div></div><div class="yiv1575108437MsoNormal">  </div><div><div id="yiv1575108437"><div id="yiv1575108437yui_3_16_0_1_1437953728683_2830"><div id="yiv1575108437yui_3_16_0_1_1437953728683_2829"><div id="yiv1575108437yui_3_16_0_1_1437951858783_4118"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Cliff,</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4121"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">I'm getting confused here. You are advocating the subconn 3 pin conector</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4123"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">but on your 5000lm light you have a 5 pin connector.</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4123"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Did you say you had a number of 3 pin connectors?</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4123"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Even with the 3 pin connectors it would be easy to have "switching" by sending</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4123"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">a small current down the 3rd pin. 4 pin & we have anologue dimming.</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4123"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Perhaps we could have a wiring option for just the 3 pins & one for dimming.</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4123"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Ken, how low can we go with switching? Could we have 2000, 5000 & 10,000lm</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4123"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">options? Just trying to clarify our options & the difficulty involved</span></div></div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div><div id="yiv1575108437yui_3_16_0_1_1437951858783_4018"><div id="yiv1575108437yui_3_16_0_1_1437951858783_4017"><div><div class="yiv1575108437MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="">  </span></div></div><div id="yiv1575108437yqt63250"><div id="yiv1575108437yui_3_16_0_1_1437951858783_4016"><div align="center" class="yiv1575108437MsoNormal" style="text-align:center;background:white;"><span style=""></span><hr align="center" size="1" width="100%"></div><div class="yiv1575108437MsoNormal" style="background:white;"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> Clifford Redus via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Wednesday, July 22, 2015 2:54 PM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] LED Lights</span><span style=""></span></div></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2868"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div><div id="yiv1575108437"><div id="yiv1575108437yui_3_16_0_1_1437953728683_2871"><div id="yiv1575108437yui_3_16_0_1_1437953728683_2870"><div id="yiv1575108437yui_3_16_0_1_1437953728683_2869"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Alec, on the work we did on the 5000 lumen LED, you had to be very careful that you designed heat sinks in the housing to dissipate heat  or the manufacture solder joint would fail.  The 5000 lumen  Vero 18 has a diameter of 3.6 cm.  The Vero 29, is 4.9 cm or only about 40% larger.  My major concern on packaging 4 of these little beast in one housing is that it is going to pull quite a bit of power and generate a lot of heat to dissipate.  Even though you would save money on connectors as you say, I would like to see us stick with one Vero 29 arrays per housing to make it easier to deal with the heat and keep from drawing so much current.  Also with the smaller housing,  if we limit the max depth of say 1000 fsw, it would be easy to handle the pressure with a 1-atm housing.  Also if we stick with one Vero 29 array per light, we can design the light so that it won't have be submerged to operate.</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2872"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2873"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">The 5000 lumen light I have will blind you.  Can't imagine what a 10,000 lumen version would be like let alone a 40,000 lumen light!</span></div></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2874"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2875"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Not locked to anything at this point.   </span></div></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2876"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2877"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Cliff  </span></div></div></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2878"><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div><div id="yiv1575108437yui_3_16_0_1_1437953728683_2879"><div class="yiv1575108437MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="">  </span></div></div><div id="yiv1575108437yqtfd35092"><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">On Tue, Jul 21, 2015 at 8:59 PM, Alec Smyth via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in;"><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">I was not familiar with the Vero 29 but just looked it up and I see it's under 5cm in diameter and less than 2mm thick! Wow, that means we're talking about a really small little device despite the hefty lumens output. Since the packaging is so small, and given the current draw is about 4 amps... do you guys think it might be worth making an array of four of these Vero 29s into each light? The cost of machining would likely not be that much more, and the cost of the Subconn connector identical, so it might be quite a bit more economical per lumen to go with a little array of four. It would be a ridiculous number of lumens, ridiculous is good in this case and we're still at a size that would fit very easily on any sub.</span></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">A first stab at housing decisions, not very premeditated:</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">- Oil filled, so that depth rating is immaterial. In my case I would need it to go to 1000 feet, or more if I wanted it to go on the sub during a depth test.</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">- Aluminum housing, for ease of machining and corrosion resistance. </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">- Flexible plastic lens, to act as a compensation bladder for thermal expansion.</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">- Subconn connector, not because you need the pressure rating but because it will keep the oil in reliably!</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Just some initial ideas, I don't own the truth.</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Best,</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""><br clear="none">Alec</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">On Tue, Jul 21, 2015 at 8:34 PM, Clifford Redus via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in;"><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Ken/Alan/Alec/Jon  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">More Thoughts</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">After Jon sets up a place were we can collaborate and share files, if it would be helpful, I could post the drawings I have for 5000 lumen flat body 1-atm LED light and a  short video of the 5000 lumen LED in operation.  My thinking is in order to fast track the project we could take this design as a starting point and just geometrically scale up the housing  just large enough to fit 10000 lumen Bridgelux Vero 29 and its support base.  Should be plenty of room for a larger diameter PCB that Ken can design. We should be able to use the same  Subconn MCBH-3MP connector.  We get a good discount on Subconn connectors through Psubs.  This design uses a hard anodized 6061-T6 for the housing and a 3/8" borosilicate glass for the lens.  The lens was an OTS item from McMaster Carr. This design did not have a reflector but it would be easy to incorporate after we settle on beam angle.  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">To me, the key is to work as group on the draft spec that Ken comes up with.  From the housing perspective, the key items the spec needs to call out are :</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">1) design depth, </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">2) 1-atm vs  oil pressure compensated, </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">3) housing material </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">4) type of electrical penetrator </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> I have Autodesk Inventor Professional loaded on my PC.  Using feedback from the group I can use Inventor to generate fabrication drawings an do the FEA work. After we freeze the design, we take Alec up on his offer to machine the housing.  If for any reason, he can't , I can use the machine shop I work with to machine the housing. After we have the prototype, I can test it in my test chamber.  For those that don't have Inventor, Autodesk has a nice 3-D viewing software that the team should be able to download for free and to view and critique design iterations.</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""><br clear="none">Cliff</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div><div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">On Tue, Jul 21, 2015 at 6:15 PM, Alan James via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in;"><div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Hi Ken,</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">a few thoughts once you have settled on the </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">electronics are.....</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Do we want a hard anodized aluminium housing?</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Do we want the housing oil filled?</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">What sealing configuration do we want?</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">What beam angle do we want?</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">What sort of reflector?</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">What sort of lense?</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">How are we going to seal the cable coming in to the housing?</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">   Some of these answers may be dictated by what is available off</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">the shelf at a reasonable price.</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Cheers Alan</span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div></div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div><div><div><div><div align="center" class="yiv1575108437MsoNormal" style="text-align:center;background:white;"><span style=""></span><hr align="center" size="1" width="100%"></div><div class="yiv1575108437MsoNormal" style="background:white;"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> Ken Martindale via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> 'Personal Submersibles General Discussion' <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Wednesday, July 22, 2015 5:16 AM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] LED Lights</span><span style=""></span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div><div><div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="font-size:11.0pt;">The electronics and custom PWB won’t be the issue. Figuring out what we want may be the biggest problem.</span><span style=""></span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="font-size:11.0pt;"> </span><span style=""></span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="font-size:11.0pt;">Ken</span><span style=""></span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="font-size:11.0pt;"> </span><span style=""></span></div></div><div><div class="yiv1575108437MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style="">  </span></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><b><span style="font-size:11.0pt;">From:</span></b><span style="font-size:11.0pt;"> Personal_Submersibles [mailto:<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles-bounces@psubs.org" target="_blank" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Clifford Redus via Personal_Submersibles<br clear="none"><b>Sent:</b> Thursday, July 16, 2015 3:52 PM<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] LED Lights</span><span style=""></span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Alan, we have a lot of collective experience we could use on the project.  I really love the fact that Ken is an EE with experience LED drivers.  After we agree on specs and packaging I am sure he can design a custom PCB for the electronics.  Having just gone through the exercise of designing a 1-arm housing, I don't think it will be difficult to design the housing.<br clear="none"><br clear="none">Cliff<br clear="none">On Thursday, July 16, 2015, Alan James via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span></div></div><blockquote style="border:none;border-left:solid windowtext 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt;border-color:currentColor currentColor currentColor rgb(204,204,204);"><div><div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Cliff,</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">I'm on board with the LED light project.</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Have done a bit of experimentation & bought about 10 different LED</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">flashlights, underwater flashlights, flood lights & various lenses.</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">I also have a friend whose working involves running banks of LED</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">lights on advertising hordings, if we get stuck on the technical side.</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Alan</span></div></div></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div><div><div><div><div align="center" class="yiv1575108437MsoNormal" style="text-align:center;background:white;"><span style=""></span><hr align="center" size="1" width="100%"></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> Clifford Redus via Personal_Submersibles <<span class="yiv1575108437MsoHyperlink">personal_submersibles@psubs.org</span>><br clear="none"><b>To:</b> Personal Submersibles General Discussion <<span class="yiv1575108437MsoHyperlink">personal_submersibles@psubs.org</span>> <br clear="none"><b>Sent:</b> Friday, July 17, 2015 2:15 AM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] LED Lights</span><span style=""></span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div><div><div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Ken, I have been off the list for some time due to work and due to my email service not passing through psub emails.  I had to go to a gmail email account to get back in the loop.</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">I am in on your suggestion to build LED psub light based on the Bridgelux Varo 29 (BXRC-50C 10K0-L-24) .   I can help on the housing design and I have access to a machine shop to fabricate the housing. I also have test chamber we can use to qualify the prototype.  Maybe we could pick one of the DeepSea Power and light LEDs take its specifications and tweak to fit a typical psubs application.  </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">We would probably need to set up something like Dropbox location, accessible to all that want to participate in the design, fabrication and testing to keep from swamping the PSUB  list.</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">I have a function LED subsea light that works fine but would like more lumens.  It is a 5000 lumen light but would like a 10,000 lumen light.</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">My suggestion is for you take the point since you came up with idea.  Maybe we could canvas the site and see would be interested in working on the project as a first step.  Given your background in EE, maybe you could come up with a first pass at the specification and we can comment on it.</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">Cliff</span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div><div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style=""> </span></div></div></div></div></div><div style="margin-bottom:12.0pt;"><div class="yiv1575108437MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style=""><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><span class="yiv1575108437MsoHyperlink">Personal_Submersibles@psubs.org</span><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span></div></div></div></div></div></div></div></blockquote></div></div></div></div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">  </span></div><div><div class="yiv1575108437MsoNormal" style="background:white;"><span style="">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Person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