[PSUBS-MAILIST] PSUBS light project status

Sat Jul 2 10:38:36 EDT 2016

Alec,How deep are thinking you will go?  you may not need lights at all.Hank 

    On Saturday, July 2, 2016 8:31 AM, Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Need to look at spec but this led driver might work.
Cliff

On Saturday, July 2, 2016, Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Thanks Alan! I like the idea of the glass lens over plastic because of the heat, and in my case because I'm air compensating the motors it would be quite simple to run extra air lines to the lights. But what I have no idea about is the driver. I followed and the link but the grammar is so bad it's on the verge of incomprehensible. However, but for five bucks I suppose I could burn up a few of these drivers in testing to find out how they work. Due to time constraints I'll probably strap a couple of dive flashlights on the sub for Seneca, and this will be my next little project afterwards. 
Best,
Alec
On Sat, Jul 2, 2016 at 12:39 AM, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Alec,I have been working on a light housing. Have attached a dwg but it is not finalized.I would have had it completed but have been waiting a Month on a replacement motorfor my lathe :(I am using a square 50W LED, but you can get 60 & 80W LEDs the same size.I am NOT putting the driver in the light housing, it ends up sitting at the back of the LEDwhere there is a massive amount of heat generated from these high power LEDs.Keeping the driver in the hull makes it easy to change out if it fails. I am going with an acrylic lens & oil compensated. I would have liked a borosilicate pressureresistant lens but it was going to cost $100-+. Also if there is a leak with a pressure resistanthousing, electrolysis can pressurize it with hydrogen gas.I am not using a reflector as they don't seem to do anything with these big LEDs. They are reallyrows of little 1W LEDs,10X6 for a 60W. So you get light being emitted from either side of the inchwide emitter, that is hard to control, especially when you are wanting an  80 degree wide angledflood light.My design also revolves around local stock aluminum tube sizes.The LEDs are around 30 to 36V. I am using these as drivers. $4.64 US, not bad.AlanConstant Voltage Constant Current DC-DC Power Module for Arduino

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Constant Voltage Constant Current DC-DC Power Module for Arduino
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      From: Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Saturday, July 2, 2016 1:41 PM
 Subject: [PSUBS-MAILIST] PSUBS light project status

Hi gents,
I have an almost-ready sub but no lights, so was wondering whether to make them per the PSUBS-designed model in the community projects section of the website. I'm in awe of those drawings! However, they show a printed wiring board that is a placeholder for a part still to be designed. I was wondering if that might have happened, or if there might be an ETA?  
Thanks,
Alec
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