** BLF LT1M-Mini Project - The little Lantern! ( PM's sent today June 21, 2022)**

1647 posts / 0 new
Last post
Tom E
Tom E's picture
Offline
Last seen: 3 months 1 week ago
Joined: 08/19/2012 - 08:23
Posts: 15065
Location: LI NY

I'm not even sure it's A2. Maybe someone else knows?

I measured 1.33 amps at max, so seems like they used 4 7135's. The lowest ramping levels are a bit jumpy. If they don't use a single 7135 for the low modes, that might explain it.

 

21700 Sofirn's for reference.

It's actually slightly taller than the IF25A up to the LED's. The bases are the same diameter. At the fins, the IF25A is wider but the head is probably heavier. Tubes have different cut threads - can't LEGO:

At max, amp measurements of 1.326:

Parts easily unscrewed:

Real OP reflector under the top:

Would prefer a brass button here instead of the spring. Programming pins are numbered - think match the pins of the processor:

Chinese markings but you can easily tell the 2700K's apart from the 5000K's:

Alum MCPCB shown in the cutout:

Tailcap spring, no magnet, and no magnet included:

 

roostre
Offline
Last seen: 1 hour 25 min ago
Joined: 03/09/2020 - 23:37
Posts: 388
Location: Pac. NW

SammysHP wrote:

The BLF Lantern target does not have thermal regulation, so the firmware in the mini comes without it as well.

My understanding is that the reason thermal regulation was not included in the first BLF Lantern was because it could never work properly due to the LEDs being at the top of the lantern but the temperature sensor was in the body of the lantern so the microprocessor was unable to make any timely meaningful temperature interpretations and corrections due to this separation.

My assumption is that this is not the case with the Mini, where it could work well and easily be included using the thermal regulation code already available and implemented in Anduril.

Thermal regulation might be especially useful in hot environments or when someone decides to use the Mini upside down because they prefer the light pattern from that orientation (assuming this orientation causes more heat retention).

How many flashlights does a "real man" need?

None, real men are not afraid of the dark.

SammysHP
SammysHP's picture
Offline
Last seen: 2 hours 8 min ago
Joined: 06/25/2019 - 14:35
Posts: 1706
Location: Germany

roostre wrote:

SammysHP wrote:

The BLF Lantern target does not have thermal regulation, so the firmware in the mini comes without it as well.

My understanding is that the reason thermal regulation was not included in the first BLF Lantern was because it could never work properly due to the LEDs being at the top of the lantern but the temperature sensor was in the body of the lantern so the microprocessor was unable to make any timely meaningful temperature interpretations and corrections due to this separation.

My assumption is that this is not the case with the Mini, where it could work well and easily be included using the thermal regulation code already available and implemented in Anduril.

Thermal regulation might be especially useful in hot environments or when someone decides to use the Mini upside down because they prefer the light pattern from that orientation (assuming this orientation causes more heat retention).


Sure, but most likely Sofirn just took the firmware they already had for the LT1.
Verodin
Offline
Last seen: 2 months 3 weeks ago
Joined: 01/11/2022 - 16:50
Posts: 585

Silly question, but it bothers me after noticing it, I have to know. What happened to the 4th mcpcb screw?

Tom E
Tom E's picture
Offline
Last seen: 3 months 1 week ago
Joined: 08/19/2012 - 08:23
Posts: 15065
Location: LI NY

Verodin wrote:
Silly question, but it bothers me after noticing it, I have to know. What happened to the 4th mcpcb screw?

Hhmm, funny, I didn't give it much thought. It didn't come with it. I can check if a screw threads in ok.

djozz
djozz's picture
Offline
Last seen: 11 hours 22 min ago
Joined: 09/07/2012 - 17:04
Posts: 18318
Location: Amsterdam

At 1.33A, thermal regulation is not really needed because the lantern will not get really hot, my guess is that the head will not get over 50 degrees C. Tom or Sig could check that.

SIGShooter
SIGShooter's picture
Offline
Last seen: 58 min 46 sec ago
Joined: 07/14/2013 - 02:10
Posts: 2546
Location: northern california

djozz wrote:
At 1.33A, thermal regulation is not really needed because the lantern will not get really hot, my guess is that the head will not get over 50 degrees C. Tom or Sig could check that.
Mine only got to about 100F (38C) when I had it running on max for 15 minutes or so in a room without any outside ventilation with the battery at 4.0v.

As I mention in one of the threads I don’t think that heat is going to be an issue.

lionheart_2281
lionheart_2281's picture
Offline
Last seen: 19 hours 22 min ago
Joined: 10/25/2012 - 18:32
Posts: 3178
Location: Brisbane, Australia

Am I the only one that thinks it’s kinda ugly?

djozz
djozz's picture
Offline
Last seen: 11 hours 22 min ago
Joined: 09/07/2012 - 17:04
Posts: 18318
Location: Amsterdam

lionheart_2281 wrote:
Am I the only one that thinks it’s kinda ugly?

Even worse: it looks boring. But that is what I think of the LT1 too. But I like these for their functionality.

It may not be easy to make them look more exciting without adding unneccessary junk to the body.

raccoon city
raccoon city's picture
Offline
Last seen: 6 hours 12 min ago
Joined: 10/06/2010 - 02:35
Posts: 19511
Location: Palm Desert CA ~ West Coast is the best coast

I think the Sofirn LT1S looks better, but it doesn't have Andúril.

Hikelite
Offline
Last seen: 1 month 3 weeks ago
Joined: 07/13/2011 - 16:18
Posts: 3999
Location: Honeyland
lionheart_2281 wrote:
Am I the only one that thinks it’s kinda ugly?

BLF LT1 looks repurposed/frankensteinian so does LT1M-Mini.

Verodin
Offline
Last seen: 2 months 3 weeks ago
Joined: 01/11/2022 - 16:50
Posts: 585

Tom E wrote:
Nice they widened the base to help stabilize it but it’s still too tippy for a lantern, specially sitting on an unstable surface, which you can expect when camping.

That’s a major downside for outdoor use. Even just sitting outside in the evening (not even taking camping into account) might be problematic. I have 0 flat surfaces outside and often tables and chairs are not standing straight. The LT1 has been relatively stable in these situations, but I’m worried the mini will not work well with this. That leaves hanging it up somewhere, but that’s not always an option either.

Tom E wrote:
Tubes have different cut threads – can’t LEGO

That’s a shame, was hoping to swap this one with a IF25A one, so I can tell the 2 I have better apart. Maybe there’s a good reason for it, but it just leaves me wondering why there can’t be any consistency in this. It’s annoying (and not limited to Sofirn).
BruisedMonkey
Offline
Last seen: 5 hours 19 min ago
Joined: 07/13/2021 - 15:58
Posts: 49
Location: UK
Verodin wrote:
That’s a major downside for outdoor use. Even just sitting outside in the evening (not even considering camping into account) might be problematic. I have 0 flat surfaces outside and often tables and chairs are not standing straight.

Recommend this 3d printed stand for the BLF LT1:
https://www.thingiverse.com/thing:4545362

Someone should be able to adapt the dimensions for the mini.

I have the stand for the regular LT1 and it’s much more stable. (I don’t have a 3d printer so I paid for it to be printed by an online 3d printing marketplace)

djozz
djozz's picture
Offline
Last seen: 11 hours 22 min ago
Joined: 09/07/2012 - 17:04
Posts: 18318
Location: Amsterdam

To make a simple stand for the mini, a 30mm cavity can be drilled in a piece of plywood, in which it can be clamped.

Tom E
Tom E's picture
Offline
Last seen: 3 months 1 week ago
Joined: 08/19/2012 - 08:23
Posts: 15065
Location: LI NY

djozz wrote:
lionheart_2281 wrote:
Am I the only one that thinks it's kinda ugly?
Even worse: it looks boring. But that is what I think of the LT1 too. But I like these for their functionality. It may not be easy to make them look more exciting without adding unneccessary junk to the body.

I have to totally agree about ugly and boring. To me, this MF01X is one of the best looking new lights: https://budgetlightforum.com/node/79993. I'd order one just because it looks so cool!

But really, a black camping light makes no sense - I want something easy to see and find in a bag, for example. Sure you can add some neon tape I suppose.

Verodin
Offline
Last seen: 2 months 3 weeks ago
Joined: 01/11/2022 - 16:50
Posts: 585

djozz wrote:
To make a simple stand for the mini, a 30mm cavity can be drilled in a piece of plywood, in which it can be clamped.

Oh that’s a good suggestion for on a table! 3D printing just doesn’t do it for me, but a nice wooden stand I can totally imagine. Have some pieces of oak lying around that might be suitable. Bit more outdoor proof as well than plywood.
lionheart_2281
lionheart_2281's picture
Offline
Last seen: 19 hours 22 min ago
Joined: 10/25/2012 - 18:32
Posts: 3178
Location: Brisbane, Australia

I’ve grown into the look of the LT1, maybe back then I thought it looked boring, but never ugly, in fact by comparison to literally every single lantern type light I think it was the best looking, even if it was just a Q8 with a piece of plastic on top.

Mr.Beam
Mr.Beam's picture
Offline
Last seen: 3 weeks 2 days ago
Joined: 07/19/2016 - 09:21
Posts: 62

you can remove me from the list:

post #312
added 02/15/2020
7 pcs.

many thanks for your continuous work Beer

whitecitadel
Offline
Last seen: 1 month 1 week ago
Joined: 12/30/2014 - 05:58
Posts: 119
Location: UK

Can one of the beta testers confirm it still has the 1/4” tripod thread in the base? (given it looks so unstable)

SIGShooter
SIGShooter's picture
Offline
Last seen: 58 min 46 sec ago
Joined: 07/14/2013 - 02:10
Posts: 2546
Location: northern california

whitecitadel wrote:
Can one of the beta testers confirm it still has the 1/4” tripod thread in the base? (given it looks so unstable)
No tripod mount on it. I asked Barry if it was going to be added but he hasn’t responded back.
Lixivium
Lixivium's picture
Offline
Last seen: 3 months 2 weeks ago
Joined: 09/16/2021 - 20:59
Posts: 107
Location: NJ

What about a magnet in the base and head with a stability plate, stored on top of the head but moved under the base while in use to enlarge footprint.

DBSAR
DBSAR's picture
Offline
Last seen: 4 days 1 hour ago
Joined: 02/11/2013 - 23:28
Posts: 6472
Location: Newfoundland, Canada
SIGShooter wrote:
whitecitadel wrote:
Can one of the beta testers confirm it still has the 1/4” tripod thread in the base? (given it looks so unstable)
No tripod mount on it. I asked Barry if it was going to be added but he hasn’t responded back.

The tripod mount threads would require the base to be much thicker, (thus making the mini taller) A magnet base would be the better option, for using a flat plate for added stability.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

LightAsFlash
Offline
Last seen: 5 months 1 week ago
Joined: 03/21/2022 - 14:07
Posts: 1
Location: Houston

Interested in 1

DBSAR
DBSAR's picture
Offline
Last seen: 4 days 1 hour ago
Joined: 02/11/2013 - 23:28
Posts: 6472
Location: Newfoundland, Canada

I received the LT1-Mini test-unit today! I will be doing tests. photos, operational evaluations and a video over this week. Thumbs Up

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

dealgrabber2002
Offline
Last seen: 21 hours 1 min ago
Joined: 06/20/2014 - 23:51
Posts: 856
Location: California

Cool, give us a small tease.

agent80
Offline
Last seen: 15 hours 42 min ago
Joined: 01/06/2013 - 02:28
Posts: 483

Yes!! A small tease please!!

DBSAR
DBSAR's picture
Offline
Last seen: 4 days 1 hour ago
Joined: 02/11/2013 - 23:28
Posts: 6472
Location: Newfoundland, Canada

> UPDATE,March,24,2022

Below is my initial tests of the Pro-production model along side of the IF25-based prototype: https://budgetlightforum.com/node/81148

> UPDATE,February,27,2022

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

DBSAR
DBSAR's picture
Offline
Last seen: 4 days 1 hour ago
Joined: 02/11/2013 - 23:28
Posts: 6472
Location: Newfoundland, Canada
dealgrabber2002 wrote:
Cool, give us a small tease.

Posted above! Big Smile

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

sHoRoMeM
Offline
Last seen: 3 months 3 weeks ago
Joined: 08/01/2021 - 00:41
Posts: 2
Location: West Coast

I’m interested in one.

Sordoslux
Offline
Last seen: 4 months 3 weeks ago
Joined: 02/22/2016 - 22:14
Posts: 11

Put me down for two please. Thanks!

Pages