Recent content by yorkie_chris

fenix-store
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    LED utility lighting. 24V. Noisy power supply

    Yup. Something like this could be a contender, wire 2x500mm lengths of it in series per fitting to get 15W@24V. Just doesn't say what the cut lengths of that are...
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    LED utility lighting. 24V. Noisy power supply

    Probably a bit rich for my blood from those guys. I'm thinking of fitting 8 or so lamps (less chance of ending up working in my own shadow) and the nearest thing I could find from JW Speaker was about £60 each. The application is on a boat but it is indoors so in this case anything with...
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    LED utility lighting. 24V. Noisy power supply

    Found an existing model that looks ok but they're £400 each. (brightline 30W on ripca.com) Think I may build something along the same lines. A PAM2861 driver chip, driving 5x series warm white XPG2's. The 5x XPG2's already on stars seem to be about £6, the driver is about £6 and I'd need to...
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    LED utility lighting. 24V. Noisy power supply

    Hi guys Looking at some lighting for the engine room of my boat My first thought was to put a few star-mounted XP-G's or similar on some aluminium U section and then fill them with potting compound, preferably with enough in series that they can be direct driven. However this will get...
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    Video light-head drawing anyone?

    Just make a tube with a gland at the back and a slug to go inside it, rebate the front of the slug to take the LED chip and have a polycarb lens with grooves sit back against the front of the slug. rebate the back of the slug for driver.
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    helmet torch recommendation

    Hi guys I currently use two of these on my hat http://www.dx.com/p/zhishunjia-d2-t6-900lm-xm-l2-t6-1-led-6-mode-cool-white-diving-flashlight-army-green-1-x-18650-382247#.WkpaWt9l97s they work fine since I replaced the O rings for proper ones (tested to 80m in tank), however the beam pattern is...
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    Switch and boot question

    Thanks for that Lucca
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    Switch and boot question

    Looking at a switch and boot for a dive light Switch is planning on being an OTTO T7 series The bulkhead it is going through is 5mm thick. Looking at using an APM HEXSEAL N1030 boot. The datasheet is a little ambiguous on the switch stem length to work with this boot. Does anyone know how...
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    Can someone recommend me an XM-L2 source and optics

    Realise we're now far, far away from the thread title. Oh well. Had a play around with XHP70 and the Iris optic last night, it's actually pretty good. Would be cracking in reasonable vis but suspect it might be a wee bit too wide to work well in snotty water. Time to order some XHP50 6V...
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    Can someone recommend me an XM-L2 source and optics

    Looks like I'm going to give the ledil 10861 a try with an XHP50 instead of the MCE it's meant for. Can someone recommend a good reliable source for the LED? There is loads of stuff available from china but for the mess around involved in a dive light I'd rather have quality - a decent bin of...
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    Can someone recommend me an XM-L2 source and optics

    Good to know about the drivers DIWDiver, will have a chat about those soon, I was leaning towards a H6Flex from TaskLED but open to suggestions. The thing that I'd like on a driver is good efficiency, a couple of power settings maybe even just low and high, and to be able to operate it from a...
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    Can someone recommend me an XM-L2 source and optics

    I had a play with a jspeybro 50mm fresnel held up near the XHP70, wasn't great to be honest, maybe they need another reflector behind? Seems it was so far away to focus tightly that it was only catching a fraction of the output. Hell of a lot of light though. That aspheric does focus sharp...
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    18650 cells, capacity versus long term reliability

    Yes point taken, I realise that these batteries pack a lot of energy. As it is, the canister is designed to withstand external water pressure but not internal pressure. I will take another look over this and make sure there's no chance of it building pressure. On the other hand, an extra PRV...
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    18650 cells, capacity versus long term reliability

    The cells are in a sealed canister worn on the rig, outside the drysuit with the entire north atlantic to keep them cool if it all goes tango uniform.
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    18650 cells, capacity versus long term reliability

    Good afternoon, I'm building a pack for running my heated clothing on long dives, 21 18650's in a pressure tight canister. Looking at samsung 2500mah 25R's, or something higher capacity like the panasonic NCR18650B (3400mah). The draw on each cell is only about 0.7A and I plan to use a seiko...
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