[BLF special edition light] new Sofirn AAA twisty high CRI Yuji 5mm LED (CCT 3200K or 5600K) for 6.50 USD

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slowtechstef
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djozz
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A trit slot (like the Lumintop Ant below) sounds nice, it depends on the design if it lengthens the light. I will do the suggestion, and will also ask which colours they can make.

Kindle
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Still interested after the switch to Sofirn.

Might as well put me down for 4 – two of each tint.

mudvin
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I am interested in four total (two of each)

Uriah
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In for 1 5600K version

sesgum
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Still interested. Two each for me. Option to have one trit installed would be nice

Trb5p
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Interested in 5600k 2pcs.

bmengineer
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For colors, I’d love to see a red or orange. I find these easier to find in the dark than black, and the ‘champagne gold’ ano always looks cheap to me.

Find all my reviews of flashlights and more gear at www.bmengineer.com

netprince
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Are we doing interest already? I am interested.

Couchmaster
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Interested in one of each, and thanks!

Texas_Ace
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slowtechstef wrote:
So who is willing to actively help with setting up a new BLF thread with the specific focus of creating the best possible AAA twisty bombproof high CRI 5mm led flashlight that will be produced by Sofirn?

Also does somebody know how to set up a team account for a BLF special interest light?

This was pointed out to me in a message.

I am too busy to run another project right now but can give you some pointers on setting up the Group buy if anyone needs help.

netprince
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I would be glad to help setup a group buy… but my free time comes and goes… so I dont want to take it on by myself…

staticx57
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In for two of each

TheShadowGuy
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djozz wrote:
A extra hand for the list would be handy though.

I could help out with the list and with handling polls, although I’m not familiar with what sites are preferred here. I’m most familiar with Surveymonkey.

On a side note, I think people have already expressed interest in a similar amount of the Sofirn light as the original Fenix idea. Probably should set up a new thread fairly soon.

As far as LEDs go, I think sticking to the original Yuji LEDs would be a good idea. Let Sofirn offer UV/Red/low CRI variants later.

Three colours total? One should probably be black. I’m not familiar enough with Sofirn’s colour ano quality to offer educated suggestions, but I like blue based colours like cyan, navy, purple, green, and shades thereof. The spectrums offered by Convoy or formerly by L3 Illuminations give some good ideas.

djozz
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Texas_Ace wrote:
slowtechstef wrote:
So who is willing to actively help with setting up a new BLF thread with the specific focus of creating the best possible AAA twisty bombproof high CRI 5mm led flashlight that will be produced by Sofirn?

Also does somebody know how to set up a team account for a BLF special interest light?

This was pointed out to me in a message.

I am too busy to run another project right now but can give you some pointers on setting up the Group buy if anyone needs help.


I still do not think a new thread is needed for this. The main objective is that the flashlight will be developed and that is being cared of and the interest list is for Sofirn to get an idea how wanted this light is. This thread is further used to gather ideas for this light and it has produced useful contributions already.

Only setting up a group buy is challenging but that may not even be in order, wether members from the interest list will receive a discount is not sure and for 6 dollar this light is interesting enough already without discount. If later a discount is indeed in order it is early enough to ask for help and find a way to do it (i.e. maybe a not so secret code to get to 5 dollar would do the trick already).

richnpc
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I’m still in, interested in 3 cool, 1 warm.

Noctiluco
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Interested at least in three warm. Many thanks.

gchart
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Ohhh, I like the recent developments! Put me down for a 5600K (I wish there was something in the middle, like a 4500K, but hey… I’ll take what I can get!)

dealgrabber2002
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I would like this light to have maximum runtime. So I vote 20 mA if 30 mA will reduce the runtime dramatically. These type of lights are not meant to be bright anyway.

CJW
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I am interested in 3 of ea.
So a total of 6
CJW

djozz
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dealgrabber2002 wrote:
I would like this light to have maximum runtime. So I vote 20 mA if 30 mA will reduce the runtime dramatically. These type of lights are not meant to be bright anyway.

I’m afraid I will need to do a current/output test this evening, and a 24hrs runtime test at 60mA to see how they last. That will generate some data on what current is best.
Ozythemandias
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Has the question of potting come up? Will the Sofrin be potted?

Venice
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In for one of each.

zeroair
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originally in for 1. If Sofirn and $6, in for 3 more.

dealgrabber2002
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djozz wrote:
dealgrabber2002 wrote:
I would like this light to have maximum runtime. So I vote 20 mA if 30 mA will reduce the runtime dramatically. These type of lights are not meant to be bright anyway.
I’m afraid I will need to do a current/output test this evening, and a 24hrs runtime test at 60mA to see how they last. That will generate some data on what current is best.

Kind Sir, if you’re in California, I will buy you a drink!

djozz
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Ozythemandias wrote:
Has the question of potting come up? Will the Sofrin be potted?

I suggested it to Barry, but had to explain what it is, I’m not sure if that is picked up very well so I may have to emphasize it once more.

Being of a skeptical nature, in the meantime I did some searching for the need of potting drivers and what came up is that it is about heavy components that come loose on impact, such as thoroids with ferrite rings. This light will have a tiny boost driver that needs to produce very little current so it has a very small (lightweight) coil, that needs much larger impact to come loose than a big thoroid. So I’m in doubt if the potted driver of the E01 is overkill or not.

So before I bug Barry about this: is there any experience at all among BLFers of small lights failing from broken-off components upon impact?

djozz
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dealgrabber2002 wrote:
djozz wrote:
dealgrabber2002 wrote:
I would like this light to have maximum runtime. So I vote 20 mA if 30 mA will reduce the runtime dramatically. These type of lights are not meant to be bright anyway.
I’m afraid I will need to do a current/output test this evening, and a 24hrs runtime test at 60mA to see how they last. That will generate some data on what current is best.

Kind Sir, if you’re in California, I will buy you a drink!


Not likely, in fact I’ve never been out of Europe sofar, but if I get there I will hold you to that! SmileBeer
MascaratumB
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djozz wrote:
Ozythemandias wrote:
Has the question of potting come up? Will the Sofrin be potted?

I suggested it to Barry, but had to explain what it is, I’m not sure if that is picked up very well so I may have to emphasize it once more.

Being of a skeptical nature, in the meantime I did some searching for the need of potting drivers and what came up is that it is about heavy components that come loose on impact, such as thoroids with ferrite rings. This light will have a tiny boost driver that needs to produce very little current so it has a very small (lightweight) coil, that needs much larger impact to come loose than a big thoroid. So I’m in doubt if the potted driver of the E01 is overkill or not.

So before I bug Barry about this: is there any experience at all among BLFers of small lights failing from broken-off components upon impact?

Only issue I (and another member) had so far was with Sofirn SP10! Somehow the impact (1m above the ground) damage a component or link between components and the light stopped working (even with magnifying lens I was never able to figure what it was).
But the SP10B has a different architecture regarding the driver. So, concerning these even smaller lights, I never had any issue. Don’t know if this helps, but that’s my only experience Oops

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Geuzzz
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joechina wrote:
Color: I opt for grey I don’t like to search in a dark place for a black item.

+1 on grey (Matte)

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They can be driven with 30mA at up to 45°C temoerature (at the solder points). This should never be exceeded at night, hotter climates.

I would go with 25mA just to be safe.

Overdriving them is a very bad idea! They will die much sooner because the heat has nowhere to go. I think there are some tests on this on CPF.

I’m in for one warm-white and three cool-white.

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