You could use a red filter… create something that would wrap around the outside of the translucent cover, so you can remove it when needed.
A red filter applied on the outside would significantly decrease LT1's overall brightness while red light from XP-E2 LEDs would be much more efficient. I would also love to see an updated or enhanced version of LT1 with either additional XP-E2 photo red (660nm) on the PCB or - taking RobertB's idea into consideration - Sofirn could use LH351D 4.000K 90CRI plus XP-E2 (photo) red and maybe remove the tint ramping feature but use the free space on the MCU for some nice red light modes. Barry was a bit worried what to do with all the XP-E2 photo red that were sourced for C01R - here comes the great opportunity to use them in another fantastic light.
Anyway, I just encouraged Barry to have a look at this idea. He is thrilled about it and would like to discuss further options. I think it's the best to have these options discussed within the LT1 team with Dennis, Lexel, ToyKeeper etc. first to see what's feasible and reasonable.
That’s good to know. If I end up having time to learn a PCB design program, I might be interested in seeing it for reference. Currently, unfortunately, I’ve got too much going on to take on a hobby project.
That’s an interesting idea. I think it would be good if they are able to offer the board for sale, although since those are emitters with an XP footprint, reflowing the included board is an option.
I wonder if the low forward voltage of the red XP-E2 would cause any issues with mixing. I wouldn’t think so, but I don’t really know.
I see what you mean. Yes, with wanting to maintain maximum output, an external filter would be a detriment. Considering how the auxiliary LED’s appearing in Astrolux, Emisar, and FireFlies has been popular, you’d think a circuit could be designed to allow for auxiliary ones driven at higher amperage in the LT1, allowing for bright red or amber emitters. This way it wouldn’t cut into the existing temperature function of the main emitters. Then in UI you can click over into AUX control, to run independently or even simultaneously with the mains.
Just received my LT1 and I am impressed! Thank you to Sofirn, DBSAR and everyone involved in developing this lantern. I am a flashlight and headlamp guy and not into lanterns but this lantern is amazing! What a great price too. Wow.
Ok, maybe a stupid question
Is there an option for smooth ramping without tint change?
I would like the 2700 K all the way from low to high, for now it starts either warm and ends cool and vice versa
Sounds like you have auto tint ramping turned on. When the tint reaches the end of its ramp, it will quickly flash to let you know the limit has been reached. If you continue holding, it will flash again indicating that it has entered auto tint ramp mode.
Ramp the tint back up a little (click-click-hold) and then back down to 2700K and let go of the switch as soon as it reaches the end. That should exit auto tint mode.
Thanx Rayoui!
That’s it! That did the trick.
That part is not directly stated in the flowchart, couldn’t get it from the manual directly.
I have been off-line for a while with a work change, but I finally got a chance to go camping this weekend. My children (age 20 and 15) stole my LT1. We used it on the picnic table as a family, so I did enjoy it, but I was hoping to use the Lightening mode and bedtime mode. Didn’t get a chance. I was going to wait for the different anodization colors, but I think I’ll just take black at this point.
I have sent Sofirm a Private message requesting my remaining two codes, where are they selling them these days? Amazon? BangGood?
Or, you can go direct at https://sofirnlight.com/blf-lt1-lantern-tint-ramping-2700k-5000k-p0123.html
I would be sort of surprised if Sofirn is still doing codes, its been 8 months since the lantern came out. But if you get one, let us know as I’ve got a 2 or 3 code entries I’ve not used yet.
I seem to remember Sofirn saying that anyone who wanted to wait for the coloured LT1s would be able to ask for new codes when they became available?
This was my understanding also, which is why I haven’t purchased another 3 lanterns yet.
That’s what they said…… still waiting for 2 colored(green/tan) ~ 
I’ve got a black one.
Now waiting for a RED one,
All the Best,
Jeff
Sofirn recently cancelled one of my BLF LT1 orders on their own because they hadn’t shipped it in over 30 days. When I contacted them about it, they said they were out of stock and are hoping to have another production run sometime in July.
I just received my first order last week after 53 days. What an amazing piece of kit! I’ve been using it every single night. Absolutely solid construction, to the point that I’m worried about dropping it. Not that it would get harmed, rather it feels like it’d crack the floor tiles. I have an EDC18, so the UI’s familiar and makes great sense with this lantern. The LEDs…are amazing. The high CRI makes a huge difference. At 2700K, it puts out nicer light than the Philips LED bulbs I have here. The illuminated button is great too, almost a night light.
Could someone tell me what the trim pot is supposed to do? I have a Rev 5.0 board in mine. I’ve seen mentions in the thread that it’s for the locator light, but it doesn’t seem to do anything on mine.
it’s my understanding that it’s for modders. stock it has no function.
agreed, I removed if from my LT1. No change in performance or utility. Also no risk in it damaging cells or getting ripped off by a cell. Not sure why we didn’t ask for it to just be removed on rev 5.0, other than like DudeMan said, perhaps a modder could do something with it.
no issue for me with button tops (protected 35E) Rev 5.0
for best results in my opinion, just get button tops.
Ordered 5/16 arrived 7/1 - Full kit with batteries and case.
The case fits perfect BTW - Charging cable and extra gasket rings along with usage manual.