BLF LT1M - LT1 Mini (link to project)

I just received this and like it a lot .
Something similar without the flashlight might be a winner !

https://www.amazon.com/Streamlight-Siege-Rechargeable-Lantern-Coyote/dp/B07Q583715/ref=sr_1_5?dchild=1&keywords=streamlight+18650&qid=1576184766&sr=8-5

If you start an interest list sign up in in for 2 (at least!)

If itā€™s anything remotely close to djozzā€™s lantern mod from the first page Iā€™m in for two.

I am looking to find a good host to build a prototype to start from for a mini-LT1 ( or Micro-LT1) design.

So will you be doing a Micro and a Mini :slight_smile:

Just had to say that before anyone else.

definitely will be, either a mini or micro, or both. :smiley:

Count me in for 1 pc.

I'm in for 2 item.. Thank you

I have thought thatā€™s applicable to both LT1v2 and LT1 Micro.

It would be useful to make battery-less USB-powered work one of primary use modes.
Why?

  1. LT1 already works great as a night lamp next to my bed but only as long as it has a cell inside - otherwise thereā€™s coil whine and annoying red/green button. I can use it with a cell but would rather avoid the extra wear I put on the cell.
  2. For portable applications I would often prefer a lantern to be as compact and lightweight as possible. And when I have a powerbank with me (which happens almost always when Iā€™m camping) ditching the battery tube would save a lot of bulk.

Regarding coil whine in the LT1, has anyone tried sticking a big capacitor or two in an 18650-sized shell? It might be possible to replicate the cellā€™s role as an energy buffer in USB-powered operation without needing the full capacity of an actual cell.

great idea and yes please Iā€™m interested

Update: 01/03/2020) i am awaiting for a couple potential hosts bases from Barry & Sofirn shipped out to me a couple weeks back, once i receive them i can work on the design & testing for the micro/Mini LT1.

:+1: I can hardly bear the wait.

This is great. Count me in!

subā€™d

Meh. Not for me, I think. Lighter, smaller, dimmer lanterns are plentiful in the marketplace. I am content with the LT1 for its brightness, runtime and feature set.

If I were a backpacker I guess Iā€™d feel differently.

More thoughts:
If the tailcap could be screwed directly into the head (without battery tube), the result would be a nice batteryless lamp. LT1 can be used without tailcap but with exposed contacts doesnā€™t feel like a product but rather like a hack. Reversing the threads on the head and adding a tailcap would make it feel better in such use.

Great that they are helping you to get this Mini moving along.
After all the LT1ā€™s they sold you must be on their ā€œGoodā€ list :slight_smile:

Thanks for doing all this and Thanks to all the others who worked on the LT1.

Your idea seems rational, but itā€™s probably easier to just stick an old 18650 in there; one that isnā€™t good for much else :wink: .

If someone did try the capacitor in a dummy shell, I recommend putting a resistor in series with it to limit charge/discharge current to some reasonable value. Even a low value like 10-ohm should be fine, as thatā€™s only a ~400mA inrush and seems likely to keep the charging circuit happy. 100-ohm also seems reasonable to me, but even higher may work.

Count me in for 1 please.