**BLF Ultimate Lantern Project** -Driver design updates Nov,13,2017 (by DEL

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jmpaul320
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interested depending on final specs and price Smile

Would you mind keeping the wrong flashlight?
Best wish, May
Tmart service team

 

Soumil wrote:

PLEASE HELP ME GEARBEsT! IM LITERALLY CRYING!

 

mhanlen
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I’d be interested. I’d also be interested in where you get a decent SRK,

uqs1000
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Interested.

DBSAR
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djozz wrote:
I have one more consideration, even though I’m sure I can trust that aspect with you: make the lantern very attractive looking Smile (even though IMO it does not necessarily have to mimic an old-school kerosine lantern)

In my opinion this is much more important for a lantern than it is for a flashlight: a lantern, when camping, is often the center of the attention, and must add to the good vibes of being in the open. I see the cheap plastic angry-blue crap everywhere and that immediately makes me feel depressed, while my handsome old Feuerhand always makes me smile.

i did that already with the Apocalypse lantern Silly
a complex design would drive the price up for a manufacturer to replicate, but i do plan on making this one here “look” like a lantern and not be completely plain.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

blueb8llz
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I think the main point to consider is to please fix the blinding eye issues that almost every led lantern has.

DBSAR
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blueb8llz wrote:
I think the main point to consider is to please fix the blinding eye issues that almost every led lantern has.

i did mention that is an issue especially with 75 % of LED lanterns on the market being a up-firing design, (LEDs on the bottom facing up) that caused a lot of glare added with colder tints that multiply the glare effect. This will have a much less glare effect.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

JPM3
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I’d be interested.

Melven
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Interested depending on price.

RollerBoySE
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Definitely interested

apt323
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interested if its a good price

Ronin42
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blueb8llz wrote:
I think the main point to consider is to please fix the blinding eye issues that almost every led lantern has.

+1

(“It’s good that most people can’t remember their previous lives. Otherwise
things would be a lot more complicated than they already are.”
Ajaan Lee Dhammadharo)

Ronin42
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djozz wrote:
I am almost with you, I’d love to see a really good led lantern come to life. But there’s one thing that all that plastic garbage has to its advantage, and that is the use of safe chemistry batteries. So I’m not really sure I would like to see this with 18650 batteries, but perhaps rather with AA-type batteries. It will be a bit less compact but much easier to sell or give away.

I propose that first a “C4” C=Camping (or CL) Camping Lantern, 4 = 4×18650 is taken from proof of concept to “production”

Then we can / should go to a smaller

C8 C=Camping (or CL) Camping Lantern 8 8xAA/814500 version

Yes a big cut the glare is very high on the list, maybe we can even get a nice big “awning top” (don’t know the proper name) because lets face it for the vast majority of use it will be popped down on the table with us and so from that level our eyes need to be protected from direct line of sight.

I think we are in great hands and I know the brain trust has forgotten more about lanterns then I will even know but I wanted to put the .02 lumens worth in the pot.

(“It’s good that most people can’t remember their previous lives. Otherwise
things would be a lot more complicated than they already are.”
Ajaan Lee Dhammadharo)

Ronin42
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The Miller wrote:
We have a plastic thingy with
Solar panel Ln top costs were $16,-
Crank in bottom
Shaped like those old fashion storm lanterns.
The light it produces is not warm but we used it camping and it sits next to the kitchen door
We have cranked it up once but the solar charging has provided light for about a year now when we needed it.
Is it possible to sacrifice the space of 1 cell for charging parts? Solar panel on top, crank at bottom? Maybe USB out port for cellphones.
To have that in a nice ALU housing would be very nice.

I was planning on just using a diffuser with a modded SRK but this is a much cooler project!

But as you go right now I am interested so put me on the list.

No attack intended but please skip the frills. Once we go to “real” emitters, (built in) solar panels just cant keep up.
Crank winding – same argument (do you know how much cranking you need to do to charge 4×2600 mah cells?)
and as for built in charging please remember the ACEBEAM debacle.
If we are on an extended trip such that packing 1-4 extra cells is an issue then we can plan on packing a separate solar panel and bring a proper charger (check out GoalZero et al)

KISS!!! If we want a power bank or a power source for our cell phone (how much are we really gong to talk on a remote trip?) See GOALZERO and others of there ilk for solutions.

.02 lumens

(“It’s good that most people can’t remember their previous lives. Otherwise
things would be a lot more complicated than they already are.”
Ajaan Lee Dhammadharo)

DBSAR
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Ronin42 wrote:
djozz wrote:
I am almost with you, I’d love to see a really good led lantern come to life. But there’s one thing that all that plastic garbage has to its advantage, and that is the use of safe chemistry batteries. So I’m not really sure I would like to see this with 18650 batteries, but perhaps rather with AA-type batteries. It will be a bit less compact but much easier to sell or give away.

I propose that first a “C4” C=Camping (or CL) Camping Lantern, 4 = 4×18650 is taken from proof of concept to “production”

Then we can / should go to a smaller

C8 C=Camping (or CL) Camping Lantern 8 8xAA/814500 version

Yes a big cut the glare is very high on the list, maybe we can even get a nice big “awning top” (don’t know the proper name) because lets face it for the vast majority of use it will be popped down on the tale with us and so from that leven our eyes need to be protected from direct line of sight.

I think we are in great hands and I know the brain trust has forgotten more about lanterns then I will even know but I wanted to put the .02 lumens worth in the pot.

Reducing the glare is one of the key goals on this build project, along with compactness, and run times balanced with output.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

Jinx
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DBSAR wrote:

Reducing the glare is one of the key goals on this build project, along with compactness, and run times balanced with output.

What about PWM, do you intend to avoid flicker or are you not worried about this aspect? For me it would be an absolute deal breaker regardless of anything else although I do realise it’s not that important for the majority of people.

Shur
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I’d be interested in a lantern that uses 18650s and runs a long time on the lower modes.

cbrake10
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mhanlen wrote:
I’d be interested. I’d also be interested in where you get a decent SRK,

^This. Times a hundred.

..edit..
but not 100 lights, i couldn’t afford that

-Clark

Paul321
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I almost bought this lantern during Fast Tech’s CNY discount
But that will have to wait.

I am willing to get in on this.

Paul-

southland
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The plan is for this lantern to be newly produced, not buying SRK and scavenging it for the battery carrier. Of course there has to be enough interest and have hundreds of reservations before this can happen.

muzzleblast
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Interested. I’ve been wanting a ~3000 lumen lantern. Big Smile

DBSAR
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Jeansy wrote:
DBSAR wrote:

Reducing the glare is one of the key goals on this build project, along with compactness, and run times balanced with output.

What about PWM, do you intend to avoid flicker or are you not worried about this aspect? For me it would be an absolute deal breaker regardless of anything else although I do realise it’s not that important for the majority of people.

PWM will be avoided with the use of a Q-Lite Rev. Nanjq 105C driver as the base driver. these have no PWM in any modes. Smile

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

kiriba-ru
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Using linear driver with XM-L/XP-L at 0.7A is very bad idea.
You will have 3.0-3.1v voltage drop through led and 0.7-1.0v voltage drop through 7135s. This means 2.1W to led, 0.5-0.7W to driver heat. Driver efficiency lower than 80%.

Meanwhile in Russia: https://twitter.com/CrazyinRussia

archimedes
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Interested depending on the final specs. I’m looking for a good lantern for a while now, so I’m curious about this project. For me a lantern requiring 18650 batteries would be first preference.
Thanks, DBSAR, for sharing this exciting idea.

Stittville Ed
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If it uses 18650 I would be in on this.

garrybunk
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I’m interested if the price is kept reasonably low.

Anxiously waiting to see more of this prototype.

-Garry

djozz
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I have thought about building a lantern before, and in my design I was not planning a driver at all, it had a rotary switch with several postions,for every position another resistor was switched in series of the led, to get the modes.

I post this just to be aware that this option exists, not because I think it is a better idea.

nickelflipper
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You could use an encoder switch w/knob to flip between modes forwards & backwards. You still need to process with a micro, and because of the pins required, could put it in the 14 pin variety.

Here is the switch I used in last years BLF contest, it is one of the smallest ones out there: http://www.digikey.com/product-search/en/sensors-transducers/encoders/19...

Kent

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Also very interested.

-joel

DBSAR
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djozz wrote:
I have thought about building a lantern before, and in my design I was not planning a driver at all, it had a rotary switch with several postions,for every position another resistor was switched in series of the led, to get the modes.

I post this just to be aware that this option exists, not because I think it is a better idea.

i have modded many of my smaller lanterns in that way using resistors for the modes and multi-positions switches, but all were on D, C, AA or AAA lanterns. in this case for 18650 LiIon cells i prefer to have the low-battery voltage safety feature of the 105 driver in case non-protected cells are used.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

AlabamaMan
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Interested

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