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

I see, so that’s what it means when the UI map mentions that the factory default ceiling is 150/150. Now it makes sense. I confirmed that turbo works as expected if the ceiling is reduced. Interesting, and ultimately the default makes sense.

Thanks for that explanation. The proposed solution sounds clever. Before even trying to implement it in Anduril, has the eye’s perception of this strategy been tested?

In any case, it’s already amazing how much Anduril can do and how it spices up the LT1. Thanks for your efforts.

Can anybody help me out? I have been gone for so long that I don’t even know if I had a user name so I had to create a new one. I was here when this project started, but never bought the lantern. I am getting ready to buy one or two and the mini later. What is the current status of a 21700 version, distant future? Should I just get the current version? I am a bit confused on their Ali store because I remember the whole problem with the USB-C and want to get the latest version. I assume that is the one listed as New Anduril 2? The price is really good right now! Thanks for any help in advance.

There has been some discussions on a 4 cell 21700 version but not much more than that. If it was me I’d get the current version because it could be some time before a decision is even made on producing one.

Thanks for the reply. I decided on one plus 2 of the LT1S and a flashlight. Now I am remembering why I never order… they never have the pretty colors they show.

3*21700 in the center of a Nalgene sized, full-body diffuser with a third red channel in addition to the two tint ramping white channels. Waterproof and floats.

sounds like a fisherman’s dream.

I recently ordered a second LT1 from Sofirn which UPS promptly lost, so they sent me a brand new production light to replace it. This one is a BLF-LT1-A4 driver with the wonky flashing pad configuration, Anduril version 202108290621. The switch backlight is orange by default, and uses a blue/pink combo for charging and power bank, or solid blue while on and plugged in. It gets stuck using either blue or blue/pink while on for a little while after being unplugged.

This particular light arrived with a weird issue where the tint ramping didn’t work properly. It didn’t memorize the setting at all so it always turned on in WW, but every second turn-on it would go through a sequence where it immediately flipped to CW on the first attempt, flipped back to WW and smoothly ramped to CW on the second attempt, then worked properly on following attempts. A factory reset solved that issue and TK told me it was probably caused by incorrect values causing an overflow. Of note, 13H factory reset doesn’t work in this Anduril build, which was rather confusing since it’s included in the UI flowchart.

What is the factory reset on Anduril version 202108290621? Or is there none?

It uses the original method:

  • Loosen tailcap (or in this case, the battery tube)
  • Hold the button
  • Tighten tailcap
  • Keep holding button until the strobing turn into a bright flash (about 3-4 seconds), then let go

If the user lets go before the flash, the factory reset is cancelled. It strobes in increasing intensity for about 3 seconds as a warning, sort of the flashlight equivalent of “Are you sure?”. Then it goes to full power to signal that the reset happened, and it quickly fades to off.

The factory reset animation originally came from my lightsaber firmware. It did the same thing, but in that UI, instead of “factory reset”, it was called “self destruct”.

Thanks!

Hi TK,

Sorry to ask here but it seems two prototypes of Q8 pro 1616 version ans SC21 Pro 1616 version were delivered.

Do you have them now? Would you please help confirm the firmware? It seems there are bugs there.

We are going to transfer all Anduril lights into 1616 version but waiting for firmware without issues.

Please help.

Installing the new driver in an older LT1. But when screwing on the battery tube, it goes on full brightness and pressing the switch has no effect. The green switch LEDs toggle between dimmed and full on when pressing the switch. Anyone has any idea what might be causing this?

Update:
Solved. When putting it back together the CW wire ended up being squeezed and the insulation broke causing a short (direct battery connection?). Seems there’s no permanent damage… phew…

Are the switch PCBs interchangeable? The green that comes with the new A2 driver is pretty annoying, so maybe the old switch board (rev 5) can be used instead. Has anyone tried this?

Unrelated, how many different flashing pad layouts has Sofirn come up with by now? I think they’ve earned a trophe from coming up with the most variations.

i ordered a LT1 in early june from here (USA shipping):

https://www.sofirnlight.com/products/sofirn-blf-lt1-anduril-2-rechargeable-lantern-super-long-working-time-with-power-bank-function-ship-from-usa

received A2 revision. fw i believe is 2021 01 25 0621, but i'm bad at counting.

i love the light. no complaints really, but the newer amber standby led color sounds better than mine which is green.

the power bank function seems to work well. my phone even said it was rapidly charging, so i guess LT1 supports PD2? pretty cool.

my dream version of this light would have:

  • tesla 4680 cell :)
  • boost driver (and no worries if it's no longer dual channel if that's the required compromise)

but much more near-term, i think it would be pretty cool to have 4x21700 support somehow.

i'd love to see a 21700 adapter.

here's a mockup of my idea (not drawn to quite to scale):

i colorized the different components for clarity.

the 21700 cells would be bottom-loaded.

i'd totally buy one to upgrade my light.

a question: i received 4x 3000 mAh 18650s with my light. they're sofirn wrapped button tops.

any idea if these cells are actually protected, or are they unprotected button tops? i want to replace these cells with some 3500 mAh button tops (sounds like i can use unprotected), but i'm wondering if i can reuse these 3000 mAh sofirn cells in a device that needs protected cells.

No protection with the Sofirn cells. That light does not need protected cells.

Definitely interested in getting 4x21700 tube…

I can’t see Sofirn making a 21700 tube. They would have to do a lot of tooling and production for unknown sales - totally different business model to having a list of people waiting to buy a 21700 LT2 or whatever you wanted to call it.

Its been a few years but didn’t dbsar originally talk about a bigger version over time?

LT1 is big/heavy/enough mAh for me, waiting for the LT1m for more portable offering (to arrive - the orders in and shipped!)

totally different business model... is it really though?

what if they just made the tube instead of what you call a LT2. can sell the same top with either 18650 or 21700 bottom. and sell the 21700 bottom separately as an upgrade for existing LT1 users. why does it need to be a whole new separate product? what else needs to be changed about it to bring a 21700 version to market? that said, i'd love a boost driver version.