*BLF LT1 Lantern Project* (codes going out for more LT1s, second batch shipping!)

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DBSAR
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I will be out of town for a few days without internet, until i return on Tuesday August, 28th. I will catch up then! – Den

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

Lexel
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atbglenn wrote:
RobertB wrote:
Lexel wrote:
I got my right hand today hurt bad
But I can try to get it, hopefully the antibiotics wirk or they ha e to cut my right pointer ng finger open and I will be handicapped a lot longer

That sucks Lexel. must be really frustrating. hope you get better soon.

Same here Lexel. I hope it’s nothing serious.

cat bite seriously infercted if antibiotic dont help next days they have to cut my pointing finger open at the joint

DBSAR
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Lexel wrote:

cat bite seriously infercted if antibiotic dont help next days they have to cut my pointing finger open at the joint

ouch* hope it heals up soon for you.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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I still have itchy spots which crust over then thicken and split open on my arm from a cat bite 5 years ago. Sounds worse than it is, but the point is don’t underestimate animal bites, some of the bacteria they can carry are nasty.

Beam me up!

atbglenn
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DBSAR wrote:
Lexel wrote:

cat bite seriously infercted if antibiotic dont help next days they have to cut my pointing finger open at the joint

ouch* hope it heals up soon for you.

Ditto

Boycott Nike

Stereodude
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What sort of people does Barry have working for him if they need to be spoon fed everything? Are they simply a build to print contract manufacturer that makes flashlights?

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got so far today
power bank added tomorrow

alsom thought if the driver comes from production with 16 AMCs and they got solder bridge to configure more or less than 4

sbslider
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Lexel did in 2 hours what I couldn’t do in 2 months. Thanks so much for the help!!

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

DavidEF
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sbslider wrote:
Lexel did in 2 hours what I couldn’t do in 2 months. Thanks so much for the help!!

Well, he has already been making a lot of driver designs, so he has plenty of starters to make this from. Changing a few things here and there doesn’t take very long. But, the point remains, and I agree – he’s awesome! Thanks from me too, Lexel!

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

DBSAR
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Lexel wrote:
got so far today
power bank added tomorrow

alsom thought if the driver comes from production with 16 AMCs and they got solder bridge to configure more or less than 4

Wow awesome work on this!
I like the idea of having solderable bridges for the 7135s, ( as in comes from the factory with 4-7135s in stock output level, but modders could easily bridge a trace to increast the output to 6 or 8 AMCs or less)

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

justanotherguy
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ill be in for one, since I seem to be BLF-afflicted

anyone in NE ILLinois into get togethers?

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Interested in 1

sbslider
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Dodge62 wrote:
I’m interested in this – please add me to the list.

Added Dodge62 at number 954 on the interest list.
justanotherguy wrote:
ill be in for one, since I seem to be BLF-afflicted

added justanotherguy at number 955 on the interest list.
Farmboy24 wrote:
Interested in 1

added Farmboy24 at number 956 on the interest list.

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

The_Driver
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Why not a MOSFET based linear driver with higher efficiency in the low modes like the LD4 and texas commander drivers?

mdeni
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RobertB wrote:
I’d forget about the tint ramping and just put some nice 3 or 4000k emitters in it, and call it a day. Strayed too far off the original plan from two years ago IMO. Nice ramping UI, some nice quality emitters and get on with the project.

Yes, that should be done. Keep is simpler.

It is much more important to have rosy tint, and CRI over 90, and R9 over 90, on either 3000-4000-4500-5000-5700k. It really does not make that much of a difference in real life. 3000-4000k with that high of a CRI is basically the same.

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Stereodude wrote:
What sort of people does Barry have working for him if they need to be spoon fed everything? Are they simply a build to print contract manufacturer that makes flashlights?

They’re building this thing to a DBSAR / BLF spec, including some very detailed and specific requirements. The simplest way to make sure everything is included and the spec is actually met is to get as much detailed design from DBSAR and BLF as possible.

Basically, Barry and his people are trying to make sure that they understand the needs of the project and stop any mistakes or misunderstandings creeping in right from the start.

I applaud them for that, because it’s an article of faith in any engineering project that correcting mistakes gets drastically harder and more expensive as you reach later stages of the project.

djozz
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mdeni wrote:
RobertB wrote:
I’d forget about the tint ramping and just put some nice 3 or 4000k emitters in it, and call it a day. Strayed too far off the original plan from two years ago IMO. Nice ramping UI, some nice quality emitters and get on with the project.

Yes, that should be done. Keep is simpler.

It is much more important to have rosy tint, and CRI over 90, and R9 over 90, on either 3000-4000-4500-5000-5700k. It really does not make that much of a difference in real life. 3000-4000k with that high of a CRI is basically the same.

I understand that the desire to keep it simple is based on the assumption that things will move faster and cheaper, or that the process even gets stuck if the design becomes complex. But you do don’t know that at all, that may be not true. A design with more features as this project is turning into may be easily achievable by Sofirn and may result in a more complete product that will be more useful and sell to a wider audiance that may have slightly different demands than you.

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Stereodude wrote:
What sort of people does Barry have working for him if they need to be spoon fed everything? Are they simply a build to print contract manufacturer that makes flashlights?

Sofirn thusfar is able to design and make basic flashlights but is eager to get on a higher level. For that they attracted some engineers from other flashlight companies, plus they happily absorb our spoon-fedded BLF-knowledge. In return we get products with our very own desirable quality features for a very reasonable price.
mdeni
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djozz wrote:
mdeni wrote:
RobertB wrote:
I’d forget about the tint ramping and just put some nice 3 or 4000k emitters in it, and call it a day. Strayed too far off the original plan from two years ago IMO. Nice ramping UI, some nice quality emitters and get on with the project.

Yes, that should be done. Keep is simpler.

It is much more important to have rosy tint, and CRI over 90, and R9 over 90, on either 3000-4000-4500-5000-5700k. It really does not make that much of a difference in real life. 3000-4000k with that high of a CRI is basically the same.

I understand that the desire to keep it simple is based on the assumption that things will move faster and cheaper, or that the process even gets stuck if the design becomes complex. But you do don’t know that at all, that may be not true. A design with more features as this project is turning into may be easily achievable by Sofirn and may result in a more complete product that will be more useful and sell to a wider audiance than just you.


I understand you also. But if i am honest with myself, that “feature” is very silly. I cannot think of a single person that will actually use it, and even less to make a difference for them to buy the light or not. As i said peoples preference and choice will be much more influenced from R9 values and rosy tint at 3000 or 4000k. Changing tint between 3000 and 4000k is not really a real feature, it is a gimmick – if we are honest.

Please, do not be offended, I am talking with the uttermost respect, but am trying to be realistic.

Phlogiston
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Well, I have a use for tint ramping. I like 5000K for work lights because that colour temperature seems more natural to me when I’m doing repairs or moving stuff around the attic, but 3000K is better for reading and relaxing in the evening before bed.

The plan is for the lantern to support a ramp between 3000K and 5000K (not 4000K), so the feature is ideal for me. I can save money by only buying one device for both scenarios, or I can buy two to have a backup with both units being able to do everything.

Much better than having one 3000K light and one 5000K light, where Murphy’s law guarantees that the one that breaks is the one you’d rather have right now Smile

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(not per sé applicable to the Lantern project: )

Being a flashaholic, I like gimmicks as much as I like useful features for real life. “Hey, that sounds cool, can we make that?” is part of the fun of BLF projects and the price that real people pay is extra features that may not neccessarily aid to their real life. Luckily some people even have a need for the gimmicks Silly Big Smile

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mdeni wrote:
djozz wrote:
mdeni wrote:
RobertB wrote:
I’d forget about the tint ramping and just put some nice 3 or 4000k emitters in it, and call it a day. Strayed too far off the original plan from two years ago IMO. Nice ramping UI, some nice quality emitters and get on with the project.

Yes, that should be done. Keep is simpler.

It is much more important to have rosy tint, and CRI over 90, and R9 over 90, on either 3000-4000-4500-5000-5700k. It really does not make that much of a difference in real life. 3000-4000k with that high of a CRI is basically the same.

I understand that the desire to keep it simple is based on the assumption that things will move faster and cheaper, or that the process even gets stuck if the design becomes complex. But you do don’t know that at all, that may be not true. A design with more features as this project is turning into may be easily achievable by Sofirn and may result in a more complete product that will be more useful and sell to a wider audiance than just you.


I understand you also. But if i am honest with myself, that “feature” is very silly. I cannot think of a single person that will actually use it, and even less to make a difference for them to buy the light or not. As i said peoples preference and choice will be much more influenced from R9 values and rosy tint at 3000 or 4000k. Changing tint between 3000 and 4000k is not really a real feature, it is a gimmick – if we are honest.

Please, do not be offended, I am talking with the uttermost respect, but am trying to be realistic.


Without that feature, I don’t know that I would still be interested in this light. This feature would also help sell to many who don’t care about this feature, but have a preferred temp. With the ability to satisfy people with a temperature preference between 3000K-5000k you cover a lot of people.

My temp preference is 4000K 99% of the time. For most scenarios I can use this at 4000K. For camping and a few other times 2700-3000K is needed. On the rare occasions that I would use it during the day I prefer 4500-5000K for that.

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Ok, then lets say it is useful for some people.

Hopefully we will see this light in the near future.

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Eraursls1984 wrote:

Without that feature, I don’t know that I would still be interested in this light. This feature would also help sell to many who don’t care about this feature, but have a preferred temp. With the ability to satisfy people with a temperature preference between 3000K-5000k you cover a lot of people.

My temp preference is 4000K 99% of the time. For most scenarios I can use this at 4000K. For camping and a few other times 2700-3000K is needed. On the rare occasions that I would use it during the day I prefer 4500-5000K for that.


Yeah, if you go back and read all the discussion from the start, you will see that the tint ramping was added just to make sure this light does cover pretty much everyone. Unless you have a strong preference for a tint which is either higher or lower than the range provided, then protesting this feature is quite a selfish and arrogant thing to do, IMHO. We aren’t a mono-culture here.

Not only that, but the tint ramping feature isn’t even a big deal from a design (or build) perspective. It doesn’t much affect the complexity of the hardware or the software, compared to recent BLF designs. The big deal, design-wise, is our attempt to add on-board charging to the driver. From Sofirn’s perspective, that still won’t be a big deal either, once we get a PCB layout (and a BOM) for them to follow.

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

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I hope it’s ready next year for purchase. That’s when I am getting back into camping.

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The main complexity of tint-ramping is indeed not in the hardware (driver design is a bit different but DEL first and Lexel now is working on that, and the MCPCB has a different lay-out which is nothing complex), but the main complexity is in the software and the work on that will be done by our in-house software-empress Toykeeper. The Sofirn part will be finding the right 3000K and 5000K leds, and letting Toykeeper have a prototype to fine-tune the settings.

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djozz wrote:
The main complexity of tint-ramping is indeed not in the hardware (driver design is a bit different but DEL first and Lexel now is working on that, and the MCPCB has a different lay-out which is nothing complex), but the main complexity is in the software and the work on that will be done by our in-house software-empress Toykeeper. The Sofirn part will be finding the right 3000K and 5000K leds, and letting Toykeeper have a prototype to fine-tune the settings.

Good points djozz. As of right now were hoping to go with efficient Samsung LH351D in both 3000Kor 2700K) and either 4000K or 5000K for the cooler side if we can get the tint ramping feature integrated.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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DBSAR wrote:
if we can get the tint ramping feature integrated.

There is no doubt in my mind that Toykeeper is fully capable of this. The hardware is easy (and done), the firmware is not much different than what already exists in Anduril.

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

The_Driver
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The_Driver wrote:
Why not a MOSFET based linear driver with higher efficiency in the low modes like the LD4 and texas commander drivers?

Nobody thinks this is a good idea? Less components and higher efficiency.

DBSAR
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The_Driver wrote:
The_Driver wrote:
Why not a MOSFET based linear driver with higher efficiency in the low modes like the LD4 and texas commander drivers?

Nobody thinks this is a good idea? Less components and higher efficiency.

I don’t have much experience with designing drivers, but Lexel and others who have the driver expertise can probably chime in on that.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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