Talk about future projects and donation topic

This thread started out good, kind of a research area for new project ideas led by someone willing to make some of those projects happen. However, I get the impression it has become something else — a wishing well, a grave for people to toss ideas into, /dev/null.

Maybe people are still waiting for their BLF GT, maybe they saw the mess that happened and aren’t interested in BLF custom projects, maybe they are out of money, who knows.
Half the people who ran the BLF projects aren’t active anymore.

Posted this in the lantern thread, but I’d really like to see a microlantern for use in tents that’s ultralight.

Something like 1 x AAA or 1 x AA, 2700k temperature, very long runtime at 0.5 - 3 lumens

This^

The BLF GT was a great project and produced a great flashlight, but the execution at the most critical times was unfortuneatly shall we say, a bit trying (not from the fault of any of those who stepped up in a storm of issues, hat’s off to all who made it happen, it was just not great to have things bouncing a thousand directions all at once)
To the point of I think a lot of members are at this time saying, the last thing we need now is a new project.
It was a project that became as they say “Became a life of it’s own” and it claimed victims of team members and BLF members at large, the forum has changed since this experiment for better or worse, it is what it is.
JMHO
Later,

Keith

Maybe no more gigantic lights? That is the reason for all those issues.

If a BLF project light is normal sized things should be a lot better. The next BLF light coming out is the FW3A. Let’s see how that goes.

A small note, I don’t think it claimed any team members. If you are thinking of the Miller leaving, that was due to his illness and personal life needing his attention. Plus other people stepped up to fill in his role.

Was there a different team member you were thinking of?

Maybe I said that wrong.
What I meant to convey is a portion of senior members who had projects in the works or who were regular contributors have seemed to have left the site either temporarily or permanent of just AWOL since the first of the year.
The large influx of youtube, facebook etc. additions has changed the vibe here for sure.
I know, you can’t stop progress.
Thanks.

Keith

Nitecore makes some compact lanterns, like the LA10 or LR10. In case that would be close enough.

There’s also the option of putting a diffuser cone on a regular AA/AAA/16340 light. Then it could serve as both flashlight and lantern. The Olight S1 Mini Ti works well for this, and IIRC it comes with a GitD cone.

I know, I know. Sometimes I’m acting a bit silly. But I can’t help myself. This light is so ridiculous that I just had to draw it. Or maybe it’s not?
This is expensive light. High budget. But there’s nothing cheaper in its niche.
Well, there’s nothing more expensive in that niche either.
Single 21700, CFT-90, FET+linear driver:

Cheers to kiriba-ru and Lux-RC.

It seems like the driver designers on this forum have pretty much concluded that you need a high-powered buck driver to handle the CFT-90. I think this is why no one is really building a single cell flashlight around that emitter.

I suppose if you could get a driver to work well and then match it up with something like a Samsung 30T you would have a pretty interesting light.

Hi Miller,

I would like to make a donation for all the great work you guys have done, and for all I have learned on this great forum.
I have also bought some of the great BLF developed flashlights, and saved money with coupons etc.
Can I please confirm that this is the correct address to donate to on Paypal:?

wimmm777@gmail.com

The Miller has been pretty busy lately and hasn’t had much time for forum stuff, but I’m sure one of the other members like ToyKeeper or Texas_Ace can confirm things given a little time.

Thanks JasonWW
I will wait for confirmation…

Given the situation with the person who started this thread, would it not be a very good idea to have sb assign this thread to a person active in BLF??

Or, at the very least; remove the donation information as it is now…. (copy & pasted below from post 1.)

wimmm777$gmail.com (replace the $ for @)

This outdated information should not be left active as far as I am concerned.

I’ve considered opening up a Patreon account or something in case people feel like donating to me personally, but I always found it a bit odd having a general BLF-project donation fund. Fair and agreeable distribution is difficult, and I don’t like handling other people’s money.

Anyway, The Miller has been mostly absent since late 2017. I don’t think he is really following current events on BLF or distributing donation funds any more. He has been a bit too busy dealing with illness and flooding and other issues.

While on the subject of donations, what has become of the balance listed in post # 1???

It was last updated on 1 October 2017…… copied & pasted below.
……………

Edited by: The Miller on 10/01/2017 - 03:56

BLF DONATIONS OVERVIEW
Total input 830,52
Total spend 344,15
Funds left 486,37

A proposal without a picture as it’s too unclear to me how exactly I’d like it to be done.
Hotrod keychain light:

  • Turnigy 180 mAh 15C Li-Poly (36x8 mm cylinder)
  • TIR lens, one that is available with both clear and pebbled variants
  • XP sized LED (with Samsung LH351D being the flood choice, maybe one of Osrams for throw?)

Now to things that make me wonder…

Driver:

  • Should it be FET+1?
  • Maybe Texas Commander to enable higher regulated current?
  • Maybe driverless to make it smaller? (bad idea, would quickly turn too hot)
  • QTC? With bypass to direct drive?

Controls:

  • Twisty?
  • E-switch? With Narsil / Andruil?

Built-in charger:

  • No, too large?
  • Yes, MicroUSB?
  • Yes, but just include headers to plug a RC charger?

Some notes on the battery:

  • recharging can be really fast, 12 minutes
    • though for durability I’d limit it to 20-30
  • 10 mAh/mm³
    • 10440 gets 9 mAh/mm³
    • 10180 gets 5 mAh/mm³
    • 18650 gets 20 mAh/mm³
  • 45 mAh/g
    • 10440 gets 32 mAh/g
    • 18650 gets 70 mAh/g
  • 2.7A continuous discharge

Considering that sub-10440 batteries tend to be of low quality, I think this one is really worthwhile.

I still do not see why a simple FET+1 driver would not drive the CFT90.
About the design: you emphasized heavily on the finning (I like that) but still what you have drawn I estimate can dissipate about 25W, not the 100W that you want the CFT90 ideally to run at. But since people do want that 100W (or whatever the 21700 will provide) for a while before the stepdown, you can buy some time with extra aluminium mass near the led, also good for distribution of heat to the fins. So I would suggest a bit less deep fins and a bit more aluminium.

I would love to know how do you estimate the performance of these fins?

Frankly, I think it would be good to make the reflector like 4 mm larger. Right now it’s quite small when considering the total size of the light. It was just easier to draw it like that because it’s just a modification of one unpublished drawing……

Making reflector larger would improve heat shedding. Though certainly not quadruple it. My intention with this light was to have fins remove at least 70% of heat. If that was the case, already quite large chunk of metal behind the LED should allow for a nice Turbo times - and superb sustained performance would be a nice bonus.

Pure guesswork extrapolated from my experience with the S2+ ( How hot does an S2+ get at 2.75A? Comparing an anodised Convoy S2+ with a fluorescent yellow powdercoated Convoy S2+ )
I guessed that the outer surface area of your design would be about three or 4 times that of a S2+ and that an end temperature of 90 degC would be undesirable.