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

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Melez
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Looking at all these last minute changes, I guess I’ll just hope we get some good emitters.

And I think I’ll be getting the ol’ lathe set up if logos on the button and up the only option. Last time I did a group buy was the 348 and thankfully they sold it with or without markings.

WarHawk-AVG
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Put me down for one!

ridepacker
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please add me to the list, i want one. thanks

Hugh Johnson
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Melez wrote:
Looking at all these last minute changes, I guess I’ll just hope we get some good emitters.

And I think I’ll be getting the ol’ lathe set up if logos on the button and up the only option. Last time I did a group buy was the 348 and thankfully they sold it with or without markings.

Three posts and looking at your second group buy. You’re all action.

xray291
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ill just be happy to see this come to life…flashlight people designing flashlights

Melez
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Oh I mostly lurk. I’m not the most active I know… But hey plenty of people sign up just for group buys right?

iamlucky13
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Melez wrote:
Oh I mostly lurk. I’m not the most active I know… But hey plenty of people sign up just for group buys right?

A group buy is what got me to join. I was also a lurker (active elsewhere, but avoiding BLF because I didn’t need more temptation to buy lights) until the Sofirn C01 started to take shape.

And then once I signed up for the C01, I very shortly afterwards gave in and signed up for the FW3A, too.

trakcon
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zak.wilson wrote:
The FET can be disabled in firmware without having to modify the driver.

I’m hoping to swap some sw45k’s into one of my FW3A’s. When the time comes, how would I go about disabling the FET in firmware? Am I correct that this would require a coding change and then recompiling?

ToyKeeper
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trakcon wrote:
zak.wilson wrote:
The FET can be disabled in firmware without having to modify the driver.

I’m hoping to swap some sw45k’s into one of my FW3A’s. When the time comes, how would I go about disabling the FET in firmware? Am I correct that this would require a coding change and then recompiling?

This has come up a few times, so I’ll probably make a config specifically for it. I just need to remember to actually do it…

trakcon
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That would be much appreciated!

zak.wilson
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I think setting PWM_CHANNELS to 2 in hwdef-FW3A.h would do it. You could also redo the PWM levels in cfg-FW3A.h to use the FET, but only at a low duty cycle.

Ceilingbounce – flashlight testing and runtime graphs for Android

Bob_McBob
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trakcon wrote:
zak.wilson wrote:
The FET can be disabled in firmware without having to modify the driver.

I’m hoping to swap some sw45k’s into one of my FW3A’s. When the time comes, how would I go about disabling the FET in firmware? Am I correct that this would require a coding change and then recompiling?

FWIW Maukka tested his review sample with sw40s and the output was acceptable with a GA. I suspect the LEDs wouldn’t fare as well with high drain cells, so it comes down to either only using the light with GAs or limiting the FET output in firmware or disabling it completely. It’s quite doable but the level you limit it to will depend on what cells you want to use.

beastlykings
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Ok, I give up. Please put me on the list for 2 of these.

Also, as far as not using the FET is concerned, couldn’t you just set the top of the ramp to the highest regulated level? Then it would never use the FET, correct? I guess unless you double clicked for turbo.. hmm..

So how would the ramp look if you didn’t use the FET? Top of ramp at 75% regulated, then fully regulated for turbo?

Interesting. I just can’t imagine not wanting the option of more lumens if you really needed them.

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zak.wilson
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beastlykings wrote:
Also, as far as not using the FET is concerned, couldn’t you just set the top of the ramp to the highest regulated level? Then it would never use the FET, correct? I guess unless you double clicked for turbo.. hmm..

So how would the ramp look if you didn’t use the FET? Top of ramp at 75% regulated, then fully regulated for turbo?

Interesting. I just can’t imagine not wanting the option of more lumens if you really needed them.

Once you start rewriting the firmware, you can specify any behavior the hardware is capable of. I’ll play with it a bit and may end up with something like a 25% duty cycle with the FET for the one I put 219Bs in. I probably want the behavior of the light to feel the same, just with a max level that’s safe for the emitters.

I don’t want to give up output I can actually have with the LEDs I’m going to use. 219Bs given too much power will turn blue and output will decrease. The emitters might potentially be permanently damaged in the process. That’s technically true of the emitters the FW3A will actually come with as well, but the hardware will not be capable of delivering that much power.

Ceilingbounce – flashlight testing and runtime graphs for Android

beastlykings
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zak.wilson wrote:
beastlykings wrote:
Also, as far as not using the FET is concerned, couldn’t you just set the top of the ramp to the highest regulated level? Then it would never use the FET, correct? I guess unless you double clicked for turbo.. hmm..

So how would the ramp look if you didn’t use the FET? Top of ramp at 75% regulated, then fully regulated for turbo?

Interesting. I just can’t imagine not wanting the option of more lumens if you really needed them.

Once you start rewriting the firmware, you can specify any behavior the hardware is capable of. I’ll play with it a bit and may end up with something like a 25% duty cycle with the FET for the one I put 219Bs in. I probably want the behavior of the light to feel the same, just with a max level that’s safe for the emitters.

I don’t want to give up output I can actually have with the LEDs I’m going to use. 219Bs given too much power will turn blue and output will decrease. The emitters might potentially be permanently damaged in the process. That’s technically true of the emitters the FW3A will actually come with as well, but the hardware will not be capable of delivering that much power.

Oh! That’s what I get for not paying close enough attention. I was under the impression that this was being done for battery life/heat management. What you say makes sense though. Even Anduril on the D4 and D4S has the FET limited on the 219c version if I remember correctly, for that reason.

I didn’t realize the 219b was that sensitive.

Thanks!

BurningPlayd0h
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beastlykings wrote:
zak.wilson wrote:
beastlykings wrote:
Also, as far as not using the FET is concerned, couldn’t you just set the top of the ramp to the highest regulated level? Then it would never use the FET, correct? I guess unless you double clicked for turbo.. hmm..

So how would the ramp look if you didn’t use the FET? Top of ramp at 75% regulated, then fully regulated for turbo?

Interesting. I just can’t imagine not wanting the option of more lumens if you really needed them.

Once you start rewriting the firmware, you can specify any behavior the hardware is capable of. I’ll play with it a bit and may end up with something like a 25% duty cycle with the FET for the one I put 219Bs in. I probably want the behavior of the light to feel the same, just with a max level that’s safe for the emitters.

I don’t want to give up output I can actually have with the LEDs I’m going to use. 219Bs given too much power will turn blue and output will decrease. The emitters might potentially be permanently damaged in the process. That’s technically true of the emitters the FW3A will actually come with as well, but the hardware will not be capable of delivering that much power.

Oh! That’s what I get for not paying close enough attention. I was under the impression that this was being done for battery life/heat management. What you say makes sense though. Even Anduril on the D4 and D4S has the FET limited on the 219c version if I remember correctly, for that reason.

I didn’t realize the 219b was that sensitive.

Thanks!


Yep, 219Bs shouldn’t be driven at >2.5A for more than very short bursts if I’m remembering right. That’s VERY easy to exceed with even lower-drain cells, they can put out higher current than even the rated burst drain in a FET-driven light.
trakcon
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I just want to make sure there’s no chance of damaging the emitters. It seemed to me that disabling the FET was the safest option.

iamlucky13
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beastlykings wrote:

Oh! That’s what I get for not paying close enough attention. I was under the impression that this was being done for battery life/heat management. What you say makes sense though. Even Anduril on the D4 and D4S has the FET limited on the 219c version if I remember correctly, for that reason.

I didn’t realize the 219b was that sensitive.

Thanks!

The 219B is rated at 1.5A, compared to 1.8A for the 219C, so nominally they don’t look much different, especially since the newer V1 219b’s have similar voltage curves to the 219C. However, the 219C is already known to be working very hard on the D4, so the concern is increased when the current your battery can supply is shared between one less emitter, and that emitter has even a slightly lower current capacity.

So dialing back the current for a 219B mod is very likely prudent.

A benefit to modifying the firmware rather than just setting the ramp at a safe level is you retain the short-cut to the firmware max level. Shortcuts are a great feature of firmwares like Anduril.

A firmware modified for the 219B might also be well-suited for the E21A, and Clemence is planning an E21A triple board. However, Carclo says the 219B should have more throw in the 10511 optic than an E21A.

FW3A Team
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Location: This is not a real account. Contact Neal for support instead.

Added some extra info to comment #3 — about the driver, and about the optics and beam pattern.

Also updated status in post #1.


- TK

FW3A thread – contact Neal on BLF or email for FW3A questions and support

WTF
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Will it be possible to buy a spare driver?

justanotherguy
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How about spare clips…!

nfetterly
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Please add 2 more for me, thank you.

ToyKeeper
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WTF wrote:
Will it be possible to buy a spare driver?
justanotherguy wrote:
How about spare clips…!

I have no idea. I’ve been trying to get confirmation on a variety of extras… but most of those questions just disappear into the void. In particular, I’m hoping there will be a diffuser cap made to fit it, to allow it to work as a candle or lantern. But I get the impression this sort of question won’t even be acknowledged until after the light itself is in production.

saypat
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will it be possible to drive a spare buyer?

boTy
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Very excited to finally see this come to fruition! Can’t wait to be able to order mine. I’ve got the money reserved Big Smile

WTF
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ToyKeeper wrote:
WTF wrote:
Will it be possible to buy a spare driver?
justanotherguy wrote:
How about spare clips…!

I have no idea. I’ve been trying to get confirmation on a variety of extras… but most of those questions just disappear into the void. In particular, I’m hoping there will be a diffuser cap made to fit it, to allow it to work as a candle or lantern. But I get the impression this sort of question won’t even be acknowledged until after the light itself is in production.

I get the impression that you have the patience of a saint.

Justanotherguy brings up a good point, you never know what spare parts you might need. I think I should get the complete master set of spare parts.

Could I have another light please? First one is at 1877.

teacher
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WTF wrote:

I get the impression that you have the patience of a saint.
/\ +1 I agree. Thumbs Up

WTF wrote:

Justanotherguy brings up a good point, you never know what spare parts you might need. I think I should get the complete master set of spare parts.

Could I have another ……..

Good one. ….. Beer . Wink

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Dougiestyle
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If no logo is possible for the GB production, I want two, total, for sure.

I don’t mind the bunny, but I don’t prefer it, either.

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