I’m sure its just me but I always struggle trying to find the actual code files. Can anyone point me to Andrul 2 for the LT1?
Easiest would be to use Launchpad.
https://bazaar.launchpad.net/~toykeeper/flashlight-firmware/anduril2/files
I poked around on there for awhile, not sure why I couldn’t find the links. Thanks so much!! 
Update, I still can’t find the firware on that page. Its the same one I visited prior to asking. There are lots of folders and a few files, but a search for Anduril on that page reveals only 2 hits, both associated with the path. I don’t get it still . . . 
Hmm, I've never used anything like that, I'll have to look into it. I just visited the website and still don't really understand how it works, but I also get confused and distracted easily ^^; Managing it all seems like a lot of effort, I have no clue how I'd keep my version of Anduril 2.0 up to date with TK's current changes and stuff...
You just navigate to the "ToyKeeper" folder, there you'll find hardware definition files. There's a "spaghetti-monster" folder, with the FSM toolkit in it. In there, there's also an "anduril" folder with all the specific anduril features and modes.
I guess I was looking for a hex file, not to build my own. Someone provided directions to build my own, I may try it, I was just hoping for a hex file I could just load like Anduril 1. I still have my D4 and LT1 files on my computer that I copied from the Launchpad previously.
Sounds like its more of a roll your own now, guess if I want updated firmware I’ll need to figure it out sometime.
Where's the fun in just loading a hex file ;D I personally started messing with the firmware cause especially in earlier version of anduril the timing were SO SLOW I just needed to adjust them to keep my sanity lol.
I'm usually not a fan of command line tools and mostly avoid linux due to that, so I just threw all the files into an atmel studio project on windows and kinda brute forced my way through the process, without really knowing my way around atmel studio.
As for the 16 bit PWM for the LT1, that part is working fine, I'm just trying to come up with a good ramp brightness table. There's a weird non-linearity or "bump" after about 1/5th of the ramp or so (not sure if it's there with the original firmware, need to investigate further). No idea where it comes from, and "fixing" it by altering the brightness table feels hacky and wrong, but idk what else to do.
Joined this forum to post this question; hopefully someone can advise!
I recently purchased a BLF LT1.
While it worked out of the box, it no longer seems to work since I’ve attempted charging. When it’s plugged into my computer the indicator light looks like a mixture of green and red. It can be turned on, but then it almost never works after it is unplugged.
I suspect it isn’t really charging? Maybe the problem is USB - I’ve tried using two different Apple computers, neither of which run USB-C, but I assumed that things were backwards compatible. If that’s the problem, what’s the easiest way to charge a BLF LT1 on a USB3.0 machine?
Thank you so much!
welcome to the forums gramophoning. did you get the version that came with batteries?
they have stickers on them for transport you need to remove to use the light.
also for charging, why not a wall wart? this light can take over an Amp of current.
Yes, I got the version with batteries - what do the stickers look like? Are they white and (haha) very hard to remove? If so, that’s the problem!! Trying to peel them now.
they are on the negative side of the battery. don’t know the color. NOT the insulating rings on the +positive side.
Hmm, if the lantern worked before charging, then at least one of the cells must have been making contact. So charging shouldn’t affect that. But if it works again after removing the stickers, then all is well.
Welcome to BLF!
There are white circle stickers on the negative side - the same colour/texture as the insulating rings…
ok, managing to peel them off… thank you! a dumb mistake.
not dumb at all. you are welcome. 
Hmm…. I peeled off the four negative stickers but the charger light is still showing a combination of green and red.
Are you sure I shouldn’t remove the ring stickers on the positive ends?
if you unplug it and hit the power button does it power up?
Remove these stickers:
Don’t remove the white circle from near the pointy/button at the top. That’s an insulation circle.
OK, yes, I’ve removed the negative stickers but will leave on the positive.
No, the light doesn’t turn on when unplugged from the computer.
what kinda cable are you using? it would help if you show us pictures of the cable, the batteries, etc. and also how the light looks like when charging
Is the tube screwed in securely? It won’t turn on if you loosen it slightly. The tube won’t be touching the PCB to complete the circuit.
Try wiping the silver aluminium part of the tube and the part that it touches on the head with a dry cloth.