FW3A, a TLF/BLF EDC flashlight - SST-20 available, coupon codes public

Yeah, thanks Jon. I can see that on my own.
I was referring to it looks like that team isn’t there any more to update it and it’s all on TK and Neal now.
Won’t ask again.

Great post. Thanks.

Nope, he’s back to saying it’s in limbo and in chaos and chastising Neal for not communicating. :confounded:

If TK is cool with it, I’d vote for her to give it a once over before production starts.

Hoping this gets some more traction and we get a final prototype/render.

Current status: Trying to get answers. Attempting to pull something solid out of the cloud of possibilities, so there can be a more concrete plan and schedule. Most of the remaining tasks depend on Neal nailing down details and making commitments.

Aside from trying to get answers, about the only task for me right now is to build new firmware with the latest updates, test it on proto2 for a few days, and send it for production to use.

Interested in one.
Please put me on the list for one (LH351D)

Does anybody know what kind of driver the light will use. It says regulated up to 1000 lumens. Is it going to be a Linear 7135 based driver?

Driver:

Anduril based 3 channel driver, with 7135+7x7135+FET.

The 3rd and “final” prototypes were already sent to 2 different people over a month ago.

We want the production version sent to someone close to Hong Kong as a final check.

Thanks BlueSwordM

Interest list updated in post #4.


- TK

you are being facetious, right?

Pavlo, it’s a FET+7+1 driver.

So, three power channels:

  • 1xAMC7135 chip for 0 to 350mA
  • 7xAMC7135 chips for 350mA to 2.8 A
  • FET for 2.8 A to full power (direct drive)

This keeps most of the levels pretty stable and reasonably efficient, as far as linear drivers go. But it still has a direct drive circuit for turbo.

In a totally non-scientific qualitative manner, the overall efficiency curve compared to a constant current linear driver looks something like this:

LEDs also change tint according to the power level. This driver attempts to minimize that effect by blending power channels, but it may still be noticeable. The curve for that looks roughly like this:

If I remember to, I suppose I should probably put this info in the first post somewhere.

Color temp / power ??
Should be efficiency / power, right?

@chinookee, no, not at all.

I really sent Digi-Key a detailed quote for 800-4500pcs+ of LH351Ds in the chromacity bins we want.

:slight_smile:
OK BlueS, I was referring to your “it’s gonna take a bit of time.”

Two seperate things.

The color can be effected due to the power delivery. The FET is full power, many amps, and uses PWM which pulses the full power to create the lower brightness levels.

The 7135 limits current, it only allows 0.35A through. So when it’s using 1 or all the 7135 chips fully, there is no pulsing or PWM and the color is slightly different.

It’s a bit complicated for me to follow, but the tint does shift slightly based on the type of power delivery to the led.

Check ToyKeepers vid.

Of course it’s gonna take a bit of time.

The folks at Digi-Key are not going to be responding during the week end.

irony is hard to master, especially for me, I guess. :weary:

The price will be quoted when it is quoted. :wink:

Joking aside, my experience is large suppliers like this can usually provide quotes on items they deal with regularly in hours to a day or two during their regular hours, and if they have to work directly with a manufacturer on a special order of something that requires a little bit of special effort, it’s usually not more than a week.