*BLF LT1 Lantern Project) (updated Nov,17,2020)

SigShooter,

I’m on the list for (2) #1305 & 1306, would like (2) more, (4) total.

Thank you good sir!

Why does it have a “T” in the switch on the Amazon product image

What an earth does that stand for?

We are still getting the logistics together to send out the buying instructions.

Once everything is in place I will start sending them out.

As Candor mentioned — It’s available now on Amazon and in stock but shipped from the manufacturer. This wasn’t available yesterday - So it’s just been listed. Here is the description listed on Amazon:

Note: Not eligible for Amazon Prime.
USB-C charging port: LT1 comes with USB-C charging cable (adapter excluded). It accepts 5V 2A fast charging and can also be charged with a premium power bank or also be operated without batteries directly attached to the USB power adapter. While charging the button LED glows red. It turns green once it get full charged.
Powered by 4x 18650 Li-Ion button top batteries with a maximum output of up to 600 lumens. Variable tint between warmwhite (2.700K) and neutralwhite (5.000K).
Two selectable and configurable user interfaces with STEPPED ramping (discrete brightness levels) as default and SMOOTH ramping (infinitely variable brightness) as alternative. Kindly read our manual for more details.
Two additional blinky and strobe groups: Group 1 comes with Battery Check, Sunset/Goodnight and Beacon modes, group 2 comes with Candle mode, Bike flasher, Party/Tactical strobe and Lightning storm mode.
Package includes: LT1 lantern, USB-C charging cable, manual and helpful customer service. Please feel free contact us, if you get any issue.

Product description
Sofirn LT1 lantern has 600 lumen max output, and uses a variable tint between warmwhite and neutralwhite to meet your personal preferences in any situation like camping, hiking, fishing or in your cellar/basement. It can be attached to a hook or mounted onto a stand/tripod for hands-free use. Moreover, LT1 lantern light has an impressed and extensive Andúril UI made by Toykeeper

Specification

Brightness: Over 600 lumen with variable tint between warm white and neutral white
Led: 8x Samsung LH351D (4x 5000K 90CRI + 4x 2700K 90CRI)
Lantern body: Aerospace grade aluminum alloy with HA III anodizing
Switch: Electronic side switch
Power source: 4x button-top 18650 batteries (NOT INCLUDED) or directly attached to USB port
Weight: approx. 0.89lb without batteries
Size: 68 mm Ø head x 176 mm length
Driver: 5 x 7135 constant current integrated circuit driver with low parasitic drain while the LT1 is off

Kind Note: This Lantern has many operations and maybe a little complex to use, please kindly check the manual before use. If you get any issue or question, please feel free contact us via Amazon directly or ask help on BLF forum, thank you!

No color selections - Only available in Black.

We’re now so close … … FUN Times !!

That’s the Thorfire button, I guess they reused an old 3D model button for that picture.

But that’s not on the actual retail product, right?

Please confirm that these are a good choice for protected cells for LT1?

Decided to go with protected cells as I have 3 young kids and while I’ll teach them not to play with it, it’ll give me peace of mind that if one of them (or their friend etc.) did open it & reverse the cells then there’s an extra layer of safety.

Thanks!

[quote=sbslider]

I’ll try to help. Not sure what your question is on the switch backlight, I didn’t go back and read all the posts closely, please ask a detailed question. As far as your 3 questions on the ramped configuration section go, 1. That’s the way ToyKeeper designed the firmware. default is level 80 for smooth. In stepped, the region between the bottom and top of the stepped range are user configurable, and the firmware divides the region up evenly depending on the user’s choice of steps. ToyKeeper chose the defaults listed. For stepped ramp, the default is the level closest to level 80, which is 65 for her design of the default. Hope that explains it. 2. Hmm, not exactly sure what your asking. The defaults are listed on page 2 of the english version in the section called Ramp Configuration, 3rd paragraph. Is there more your looking for? All of this is user programmable, so once it is changed by the user the “defaults” change. 3. The grammar in this question is hard for me to understand. I think the answer is that’s the way ToyKeeper programmed it. You can never change the level wanting to default to at (smooth ramp) or near as possible (stepped ramp). You can change the bottom and top of the ramps independently for each ramp type, and the number of steps for the stepped ramp, but not the default level at which the lantern will turn on with a single click after the battery is replaced. Once the user changes the factory defaults, they can be reset, but I don’t think that got put in the manual as to how, at least I didn’t find it at glance right now.
[/quote]

Many thanks guys, really. I now understand what was previously missing to me. I can finish to translate that and making sense. Great job!

Small detail for STEPPED: so that does mean that, the user defined # of steps is persistent after power loss?

Yes, that is correct, the if the user changes the number of steps from the default (5) to another number, that updated number is saved when the power is removed.

FYI I will be posting status updates, etc in status update thread . You may find it easier to see what is happening there rather than here.

That thread is only for status updates, issues, etc so hopefully we can keep things to that.

Thanks

I read somewhere that these are being produced in batches for our group buy. Can anyone shed some more light on this and how this process will play out?

Please Add 2 more for me, total of 3.

I am #75, could I add one more light for a total of two please?

Those would work great :+1:

Thank you! :slight_smile:

Et voilà, the french translation (PDF) is officialy available for public release, now crossing my fingers to meet Sofirn Batch#2 printing schedule.

Thanks to the original writers of the manual, and thanks again to all of you who dared to risk your lifes answering me in the last pages.

Please consult the linked PDF directly (that should also be soon available from the usual shared repository), as I did not regenerate PNG extracts this time, and feel free to propose suggestion and correction.

For next international updates of the LT1 operation manual, I'd like to propose to factor in some info about some physical aspects. Like the metal support ring and standard tripod holes.

Perhaps you should update the first post to include the fact that this forum has a “Click to Subscribe” button in a big, obnoxious font.
At that rate the thread is a mess…

Please add one more for me. Original post 1836. Total of 2 desired.

@SIGShooter I’m currently on the list for 3 units. Please add 5 for a total of 8. Everybody is getting lanterns for Christmas.

One more for me - Total of 5