[PART 1] Official BLF GT Group Buy thread. Group buy officially closed! Lights shipping.

That’s a beauty DEL, remarkable work! :beer:

The heat form this driver should be a non issue in the massive light! :+1:

hey im interested, can you put me down for one.
dont want to sound impatient but how long before its going to be available. Or even see a working prototype to be able to get real world figures and outputs from?

I wish there was a buck driver like this that could do 12A+ :frowning:

NICE DEL!
beautifull driver for sure!
And awesome how you write stuff like: “but this easily adjusted by changing Rsense” and “Will bring it down to about 125 uA by upping the LVP resistors.” it’s like magic and you’re a grand wizard for sure!

Will update list later

Thanks for the kind words everyone!

Regarding capacity, the design is very conservative and it should be able to run 5 A with minor modifications. Doing that will have some components run pretty hot though.

2.5 A is only a 10% bump from where we are now and is not an issue. Only reason I am at 2.25 A is the availability of good current sense resistors. Would have been nice to stick with 0.1 ohm.

Very nice driver setup there. Only thing I could see to improve it would be a 1617 mcu.

+1

I will start a NarsilM thread soon. Might not have DEL's buck driver mods in it for the first release but that's the plan. Hoping it will be just another compiler switch in the setups header to choose between 1, 2 or 3 channels or buck.

Please put me down for 4 more for a total of 5. Saw there was a limit of 555 but put me in line for the spaces opened up by those that drop out. Thanks

Don’t think it’s fair that Lumintop is limiting the number we can purchase. They are getting tons of free R&D, design, and testing for nothing and then want to limit the amount we can buy before the price increases by a significant amount. It might bite them in the butt like what happened with the Kronos lights. They ended up selling for less after the group buy than they did during the group buy. Labeled Astrolux of course.

It is fair for this is not shaping up to be a light costing only half of the groupbuy price to make thus leaving such a big margin that after groupbuy prices can be lower.
I really don’t want to go into how and what Kronos did, just know we do everything possible to get a really low price on the projects I am involved in.
Maybe maybe if the reflector costs are good and the overall costs of making a GT and shipping it are lower then expected we can lift the limited amount for the groupbuy or make the number for the groupbuy higher. IF this is the case, it will be communicated and changes to the lists will be made accordingly.

I’m in for one piece, I hope it’s not to late

…and how much is the blinking frequency of the strobe mode?

Yep, it is done that way many times with knives if there is a special limited run, group buy, or something else that sets the knife apart. :slight_smile:

Like Pulsar mentioned… sometimes they say something like ……… Pre-Production / 1 of 555 or 2016 Forum Knife / 1 of 1000… something like that. It is not negotiable usually, it is just how it is if one wishes to have one.

It could be worded any way, but it sets it apart from the Production run if there is to be one. That way there is no jockeying for position to see who gets what serial number. Those that put there money or mouth up first get the Pre Pro run and they are all numbered the same… end of story.

Could work with a light also, but that is not my decision. If it were, I know how I would do it. :wink:

How about “BLF Q8 SPECIAL EDITION” and with the production run just “BLF Q8”

Cheers David

I think you missed the topic a little. :wink:
This is the GT.

/\\\\\

:+1: …. :wink:

Doh

Cheers David

good question, hope its not like the pathetic one on my tn42
the strobe on that thing is utter junk
my lil thorfire c8 has a more potent strobe
no idea what those dummys were thinking, cutting the power back over half, and making it blink 5000 times per second

About serial number. Why not number it in order, first light will be 1/555, the second one is 2/555, and so on
I dont think we need to engrave text, Kiss(keep it simple stupid :D)

Please put me down for one,
hope I’m not too late…