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

Other Types of Lights LED Lanterns
4165

So in for 2 more?

Never mindā€¦.I put you in for another 2,

4166

Yes! Sorry. Didnā€™t make that clear. 2 more. 3 total.

4167

No. I wasnā€™t suggesting that an options with batteries was not needed.

I just didnā€™t want to have to get batteries in order to get accessories. (What I saw in the original post was the accessories and batteries were bundled. But perhaps I was reading too much into it.)

4168

Triple down.

Meaning, Iā€™m on the list at 978, please add me for TWO more (total of three).

I have two brothers. I should maybe add another, because I also have a father who might be interested, but letā€™s start with a total of three (from one).

Youā€™re all doing great work.

4169

I would also like to enter for 2 more.

As well as blammergeier I am already on the list for 1.

so in total: 3 for me please

4170

Agreed :beer:

I like it :smiley:

Agreed, thank you very much :beer:

4171

Hi, please put me on the list for one.
Thank you.

4172

@DBSAR, 12-15ft is 4-5m, which is still extremely long, and you will be getting high power losses.

A max of 2-3m, or a max of 9ft, would be the best bet.

4173

Please put me on the list for one.
Thank You.

4174

I have done a quick test of the charging port

also 2. measurement I have overwritten the automatic protocol to charge at 12V to test the plug in to a 12V source as 1:1 car adapter or diretly on a 12V solar panel

4175

Can this work with a 1x 18650?

4176

Of cause, why not.
It has the same battery-tube as the Q8 and it do not need many amps from the battery, because it should have a long runtime.

4177

yes, just expect 1/4 the run time compared to 4x18650

4178

Please put me on the list for one.

4179

Ooooh, I completely missed the part about the charging circuit.
So it accepts up to 15V. Is it the TP5100 BlueSwordM mentioned earlier or something like it?
That would mean thereā€™s no QC or USB PD or anything fancy like that?
If I understood correctly you can plug it in to a 5V USB power and it will take that but if you hook it up to a 12V solar panel it will happily accept that as well?

Hmmā€¦ How is the charging circuit integrated to the rest of the flashlight?
Iā€™m just wondering if the lantern is moddable in that regard?
With previous talk about configurable charging rate my guess is it wouldnā€™t be?

DBSAR, regarding the cable. 12-15 feet is ~3.65-4.57m. Not that far off from 5m :innocent:

24AWG is pretty standard with decent quality charging cables.
But 20AWG is certainly doable with Type C and legacy Type C cables. I think Iā€™ve even seen 18AWG at some point.
These just wonā€™t be cheap so Iā€™m not sure it would be worth it.
As if I did the math correctly, thereā€™s 2.5x more copper in 20AWG than there is in 24AWG.
Thatā€™s a bit of a jump in terms of cost. And copper is expensive these days.

Iā€™ll just dump some voltage drop values here for 5 meter cables with one pair of copper conductors
20AWG and 5V1.0A = 6.66% drop or 4.67V at the end
20AWG and 5V1.5A = 9.99% drop or 4.5V at the end
24AWG and 5V1.0A = 16.84% drop or 4.16V at the end
24AWG and 5V1.5A = 25.27% drop or 3.74V at the end

Even if we drop the length down to 3.5 meters it would still perform rather poorly in my opinion with
24AWG and 5V1.0A = 11.79% drop or 4.41V at the end
24AWG and 5V1.5A = 17.69% drop or 4.12V at the end

Iā€™d say a 2 meter cable would be a good compromise
24AWG and 5V1.0A = 6.74% drop or 4.66V at the end
24AWG and 5V1.5A = 10.11% drop or 4.49V at the end

Or 2.5m. Something in that ball park.

4180

good points. maybe shorten a good HD cable to 8 or 10 feet then.

4181

Please add me for another 1 please :+1:

4182

The LT1 is about the same size as a Q8 with a diffuser cap on top, but it looks a lot nicer and it doesnā€™t emit most of its light out the top like the Q8 does. Also, it lets me adjust the color temperature, but in this pic I have it set as warm as possible to try to match the Q8.

I think the lantern is going to be getting a lot of use here. Iā€™ll probably retire the Q8 from lantern duty, add some DC-Fix to the lens, and use it only for photo fill lighting. Because the lantern is better at, er, being a lantern.

4183

Nice photo TK :+1: i do notice the slightly thicker base due to the tripod mount hole. Just curious, how deep is that 1/4-20 threaded mount hole?

4184

Wow, great comparison shot TK! Iā€™m looking forward to getting mine when the time comes. If I can scrape up enough money at the time, I might go for a second one!