[BLF special edition light] new Sofirn AAA twisty with two tints of high CRI Yuji leds for 6 dollar

1217 posts / 0 new
Last post
djozz
djozz's picture
Offline
Last seen: 11 hours 39 min ago
Joined: 09/07/2012 - 17:04
Posts: 13328
Location: Amsterdam

slowtechstef wrote:
Plan B: a Sofirn made E01 clone with Yuji led, in both 3200K and 5600K version, and with potted electronics for 6 USD would be amazing. And certainly something I would be very interested in.

A potted driver is not a hard promise of Sofirn, and AFAIK not a unique requirement for a tough flashlight. The request was to make it tough, with the suggestion to pot the driver. If Sofirn can make it bomb-proof without potting the driver I guess that would be fine.

xikteni wrote:
I’d be in for one of each tint, if the resulting product was of comparable quality to an E01.

To get ultimate proof that the quality compares to the E01 takes years and many users. What we will get is tests that may or may not seem convincing, and an educated evaluation of the design. That will have to do to make your decision to buy it, but I’m confident that BLF is knowledgable enough to see if Sofirn succeeded in making a worthy version of the 5mm-led AAA twisty.

link to djozz tests 

“I used to think that top environmental problems were biodiversity loss, ecosystem collapse and climate change. I thought that thirty years of good science could address these problems. I was wrong. The top environmental problems are selfishness, greed and apathy, and to deal with these we need a cultural and spiritual transformation. And we scientists don’t know how to do that.”   (Gus Speth)

shirnask
Offline
Last seen: 1 hour 44 min ago
Joined: 03/21/2016 - 23:58
Posts: 528
Location: Louisiana

In for 4

sbslider
sbslider's picture
Offline
Last seen: 5 hours 57 min ago
Joined: 01/22/2017 - 13:41
Posts: 715
Location: United States

bmengineer wrote:
This is huge news! Is there any chance they can implement the momentary press that some twisty lights have?

not sure what specifically you are referring to, but on my twisty lights I generally find it easy to twist them “just off”. At that point I can squeeze the body and head together, and the play in the threads is sufficient to get momentary on. I expect a $6 light would have sufficiently sloppy threads to do this without extra parts.

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

djozz
djozz's picture
Offline
Last seen: 11 hours 39 min ago
Joined: 09/07/2012 - 17:04
Posts: 13328
Location: Amsterdam

sbslider wrote:
I expect a $6 light would have sufficiently sloppy threads to do this without extra parts.

Do not underestimate 6 dollar. There’s 2 dollar lights out there with more material and way more complex build (like a sk68 clone), and there is a profit on them too. I think with a light this simple, for 6 dollar you can get excellent threads (and robustness, and ano, and driver etc.). Still the momentary-on will probably work fine this way.

link to djozz tests 

“I used to think that top environmental problems were biodiversity loss, ecosystem collapse and climate change. I thought that thirty years of good science could address these problems. I was wrong. The top environmental problems are selfishness, greed and apathy, and to deal with these we need a cultural and spiritual transformation. And we scientists don’t know how to do that.”   (Gus Speth)

iamlucky13
Offline
Last seen: 6 hours 9 min ago
Joined: 06/22/2018 - 09:18
Posts: 135
Location: USA

Good work djozz!

Slowtechstef – for the sake of avoiding too much confusion about interest and who is on any lists, perhaps editing the first post to note the interest list is on hold while details get settled on the latest development would be wise. Your call though.

iamlucky13
Offline
Last seen: 6 hours 9 min ago
Joined: 06/22/2018 - 09:18
Posts: 135
Location: USA

Some additional thoughts.

Another nice characteristic of the E01 is its excellent regulation for most of the battery life and efficiency. At this price, I consider it a desirable trait rather than a necessity, but thought I’d mention it in case the point is open for discussion.

I have done some testing with these emitters, including overdrive testing. If any of it might be useful, I’m happy to share.

These emitters should be safe to drive harder than 20mA. Standard rating conditions are 20mA, and Yuji’s official spec indicates they are good for 30mA continuous. I measured an output peak at 90mA.

I haven’t tried to establish life expectancy at some intermediate drive level, but probably could set something up if it would be helpful.

dealgrabber2002
Offline
Last seen: 5 hours 2 min ago
Joined: 06/20/2014 - 23:51
Posts: 455
Location: California

The one thing I admire most about the E01 is that it will turn on when other lights would not on a dead battery. A true vampire.

ohbreeeezy
ohbreeeezy's picture
Offline
Last seen: 2 weeks 2 days ago
Joined: 09/26/2017 - 16:07
Posts: 123
Location: California

In for 1.

tocirahl
Offline
Last seen: 2 weeks 3 days ago
Joined: 10/18/2016 - 13:00
Posts: 97
Location: Austin, TX

In for one of each CCT!

zifzif
Offline
Last seen: 2 months 1 week ago
Joined: 04/28/2017 - 11:43
Posts: 31

Holy mackerel! At that price I’d be down for two of each color temp!

CJ Avlis
Offline
Last seen: 7 hours 50 min ago
Joined: 07/21/2017 - 20:30
Posts: 246
Location: USA

Why wouldn’t I want 3 of each? Mark me down please.

Manheim69
Offline
Last seen: 2 months 1 week ago
Joined: 07/27/2017 - 00:35
Posts: 5

I am in for 2 of each

Random Dan
Offline
Last seen: 3 hours 13 min ago
Joined: 06/06/2018 - 22:55
Posts: 23
Location: United States

I still want one of each tint, pending seeing pictures / tests of Sofirn’s product.

The Whispering ...
Offline
Last seen: 1 month 4 weeks ago
Joined: 06/25/2018 - 21:36
Posts: 4
Location: Florida

In for one of each CCT at the least.

If they are built to be a true E01 rival with potting, good regulation, and battery vampire qualities, I’ll commit to eight if it stays in the neighborhood of the $6 price point mentioned. Not just going to hoard them for myself, I would give some away.

Tomogchi
Offline
Last seen: 3 weeks 6 days ago
Joined: 07/27/2017 - 23:57
Posts: 8
Location: New york

In for two of each!

It all started with just one flashlight.

sbslider
sbslider's picture
Offline
Last seen: 5 hours 57 min ago
Joined: 01/22/2017 - 13:41
Posts: 715
Location: United States

djozz wrote:
sbslider wrote:
I expect a $6 light would have sufficiently sloppy threads to do this without extra parts.

Do not underestimate 6 dollar. There’s 2 dollar lights out there with more material and way more complex build (like a sk68 clone), and there is a profit on them too. I think with a light this simple, for 6 dollar you can get excellent threads (and robustness, and ano, and driver etc.). Still the momentary-on will probably work fine this way.

Yeah, that did not come out right. I have 4 AAA twisties, and when I carried them my MO was to squeeze the head to get the light to come on and go through modes even. Maratac copper, brass Lumintop worm, Manker Boney, and Thrunite Ti3. The only one that does not work well that way is the Ti3, it just needs to be twisted. Just saying that there are options for momentary on without twisting.

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

finnegans
Offline
Last seen: 4 days 10 hours ago
Joined: 05/25/2018 - 09:01
Posts: 19
Location: USA

In for two of each-

Archibald Tuttle
Archibald Tuttle's picture
Offline
Last seen: 2 weeks 1 day ago
Joined: 01/31/2017 - 18:57
Posts: 14

Gebe wrote:
Archibald Tuttle wrote:
If these do remain potted, with the existing driver , I will be in for 4. I was able to source a few 3200k Yuji LEDs from a Australian vendor last year. I’ve put them, mostly, in LRI Photon Freedoms, for work cap duty. Doesn’t every flashophile keep a light source in their cap? Really like the warm flood for reading nameplate ratings etc. Keeping positive thoughts for 1000 takers.

![IMG]http://i65.tinypic.com/15×4pqr.jpg[/IMG]!

Not to hijack the thread but these LED’s seem to be ideal for upgrading Photon type mini lights like Archibald Tuttle did. Anyone know of a source to buy just a few of these instead of a hundred?

This Australian vendor has both the 3200k and 5600k. I split the cost of shipping with another forum member.

https://www.ledsales.com.au/index.php?main_page=product_info&products_id...

I’m still interested in several of the AAA lights, if this gets to the production stage, from either manufacturer.

juaquin
Offline
Last seen: 7 hours 1 min ago
Joined: 09/21/2015 - 17:33
Posts: 90

I’ll take 4 of the warm white.

I_like_lamb
I_like_lamb's picture
Offline
Last seen: 1 week 4 days ago
Joined: 08/21/2016 - 03:54
Posts: 102
Location: Sydney, 'Straya

Im keen for 4

joechina
Offline
Last seen: 42 min 53 sec ago
Joined: 03/05/2016 - 08:23
Posts: 1127
Location: Germany

djozz
I think we can make here in this thread the first few preparation.

But it would be better to start later a new thread with a structure like the FW3A, GTmini or GT70.
- A team handles the thread
- The first ca. ten Post reserved
- an order formular (like Gt70) and email confirmation.

joechina
Offline
Last seen: 42 min 53 sec ago
Joined: 03/05/2016 - 08:23
Posts: 1127
Location: Germany

And can you ask Sofirn if we can order spare LEDs for other projects.
They can sell it in packs with 5 or 10 each.

joechina
Offline
Last seen: 42 min 53 sec ago
Joined: 03/05/2016 - 08:23
Posts: 1127
Location: Germany

Ideas for Sofirn 5mm light:
- A hex head. Doesnt roll away. Better grip for a twisty
- a trit slot in the tail

Please also read this comparison review:
http://www.candlepowerforums.com/vb/showthread.php?397487-It-s-back-on!-...

slowtechstef
slowtechstef's picture
Offline
Last seen: 2 months 3 weeks ago
Joined: 02/17/2018 - 12:39
Posts: 80
Location: the Netherlands

This Thursday I am going on a camping trip for almost 4 weeks in the mountains in Northern Italy. In this period I will be without Internet access. Given the recent developments I would like to transfer the supervision of this thread to a team.

Is there anyone interested in joining this team for coordinating this special edition BLF light made by Sofirn?

djozz
djozz's picture
Offline
Last seen: 11 hours 39 min ago
Joined: 09/07/2012 - 17:04
Posts: 13328
Location: Amsterdam

I will be around until August 11th, and can maintain the list. A team like for the Q8 or FW3A seems not really needed for this light since the design will be mostly in the hands of Sofirn, who are really capable of making it. A extra hand for the list would be handy though.

Barry answered a few more questions:

-the body can be made in three colours, he asked which colours we like. I see a pagelong discussion coming up Big Smile , perhaps a poll should solve that.
-about the driver: yes, it can be made to fully drain an alkaline, in fact they claim they can make the same driver as the E01
-I asked if the current could be 30mA, Barry said it was possible but was concerned if that would reduce the lifetime of the led and so make the light less durable. I estimate that 30mA will be alright but is there someone with more experience with these leds who has knowledgable input?
-apart from this Yuji version for BLF, Sofirn will likely make a common white low CRI version with more output too. I suggested also that a version with red led would be popular, and perhaps 365nmUV and he answered that if demand would be there that could easily be made too (but AFAIC there will be no interest list for that in this thread, seems a bit too complicated to me).

link to djozz tests 

“I used to think that top environmental problems were biodiversity loss, ecosystem collapse and climate change. I thought that thirty years of good science could address these problems. I was wrong. The top environmental problems are selfishness, greed and apathy, and to deal with these we need a cultural and spiritual transformation. And we scientists don’t know how to do that.”   (Gus Speth)

joechina
Offline
Last seen: 42 min 53 sec ago
Joined: 03/05/2016 - 08:23
Posts: 1127
Location: Germany

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

puglife2
Offline
Last seen: 11 hours 14 min ago
Joined: 10/07/2017 - 17:56
Posts: 123

in for 1

slowtechstef
slowtechstef's picture
Offline
Last seen: 2 months 3 weeks ago
Joined: 02/17/2018 - 12:39
Posts: 80
Location: the Netherlands

Djozz: thanks for helping out with the list!

MascaratumB
MascaratumB's picture
Online
Last seen: 11 sec ago
Joined: 10/29/2016 - 12:12
Posts: 2531
Location: Portugal

IF this project is going to happen with Sofirn, with both tints and at $6, I am interested in 2 lights: 1×3200K and 1×5600K !!
I like how the things are going Wink

@ djozz about :

Quote:
-the body can be made in three colours, he asked which colours we like. I see a pagelong discussion coming up, perhaps a poll should solve that.

Yup, I guess a poll will be a better solution! However, isn’t it better to check on Sofirn first to check what colours they are willing to offer?

Even I am not a tritium user (so far) I am also with joechina on this, if possible:

Quote:
- a trit slot in the tail
Beer

REVIEWS : Amutorch S3 /  AM S3 vs Neal 219c  /  Amutorch AM30 / Nitefox UT20 / Sofirn SF14 & SP10A / Sofirn SP32A / Sofirn SP10B / Odepro KL52 / Acebeam H20 / SS AAA / Wuben TO10R / BlitzWolf BW-ET1 / Odepro B018 / DQG Slim Ti / XTAR PB2 Charger / Nitefox ES10K / Nitefox K3 / Amutorch AX1 / Amutorch VG10 / Olight M2R Warrior  / OTR M1

Mods and tricks: 1 / 2 / 3 / 4 / 5 / 6 / 7     Convoy S2+ TIR Lenses: XML2 / XPL-HI     Others: Convoy S2+ Mini (Biscotti 3 & 1*7135)     Sofirn K6 Discussion: 1 / 2 / 3    Triple TIR & XP-G2                   MY GIVEAWAY (FW3A) = ACTIVE

DB Custom said: "Hide your billfold, cut up your credit cards... you're a perfect candidate for full blown flashaholism and will soon need dedicated flashlight cabinets. [...] Have fun! Modding is next... :P" 

 

slowtechstef
slowtechstef's picture
Offline
Last seen: 2 months 3 weeks ago
Joined: 02/17/2018 - 12:39
Posts: 80
Location: the Netherlands

By the way here is the dataset for the BC series Yuji 5mm led:
https://cdn.shopify.com/s/files/1/0344/6401/files/YJWJ000-1.1_YJ-BC-F5-G...

The current it lists is 20 mA, with an absolute maximum current of 30 mA. However perhaps someone more knowledgeable can translate what this means for real world application in a flashlight.

Regarding CRI: the minimum Ra is 93, with a typical R9 value of 60.

Pages