GT mini~reflash the latest firmware~

What diameter is the driver?

Technically it is a 22.5mm driver but it is press fit and needs to be lined up with some bumps in the edge to work, so I would not plan on swapping drivers, piggybacking is a more practical option if that is needed, although I don’t see that working out real well since I doubt a buck driver would fit.

That is unless someone makes a driver just for this light.

Here’s a few measurements from my CW version. With a 30Q @30s I got 2.85A at top of ramp and 5.5A on turbo. Quite good. Same clamp meter as Steel.

I also got 148kcd @30s.

So quite good performance.

I have a lot more numbers if anyone wants them. Link here.

148kcd is really good. Is that with the spring bypass or stock?

Also do you have a D1S to compare it with?

That’s stock. The tail cap has a double spring, but the driver is a single. At least it’s a short single spring.

I don’t have a D1S.

thanx!

is there much difference between using a 30Q battery or a samsung 35E battery ?

For most situations, I would go with the 30Q.

Lower internal resistance, so more power, and more efficient at higher power levels than 3A.

Like BSM said, with a FET light like this, a high drain battery will get you higher output than a high capacity battery.

You basically trade some of that high output for some extra runtime when the voltage gets real low.

Here is a comparison with the Sanyo GA 3500, it’s very similar to the 35E.

As you can see, they are both pretty good. There are just some small differences.

okay great gonna use the 30q then :slight_smile:

I’ve tried measuring the current when the 18650 is housed in a similar kind of battery holder. I think the battery holder’s springs plus the thin wires are causing a massive drop…

UPDATE TO MANUAL

After trying mode 4 and mode 10 it appears that the groups are reversed.

Modes 1-6 use full turbo as 100% (5A)

Modes 7-12 use the top of the ramp as 100% (2.5A)

We definitely need an updated manual to reflect this.

Edit: And here it is.
GT Mini User Manaual
.

The GT mini manual was printed before the “official” manual was sent to lumintop IIRC. So this manual is one they made without really understanding the details.

The manual we sent them has the correct modes.

GT Mini User Manaual

Cool, now we just need to get rid of the old manual links and update them. Thanks. :+1:

Regarding NarsilM versions.

The stock BLF Q8 (and it seems even the currently-produced models) come with NarsilM v1.0
(can be updated to NarsilM v1.2 — I wonder why they didn’t do so from the factory, for this bestselling light;
which fixes the strobes mode to be cyclable)

The BLF GT comes with NarsilM v1.2

The Lumintop GT Mini now comes with NarsilM v1.3

What is changed between v1.3 and v1.2 of NarsilM? Is there a changelog somewhere?

(I notice the Fireflies ROT66 also just comes with NarsilM v1.2 ; any other factory-produced lights that come pre-installed with NarsilM?)

I guess you could say Thorfire is lazy and/or doesn’t want to risk the newer version having a flaw or issue. So they just leave it as it is. It’s works fine as is, it just lacks a few features. It’s also possible that they need someone to tailor M v1.2 to work reliabily on the Q8. I’m not sure.

I don’t know if there is a changelog between M v1.2 and M v1.3. I don’t think any features changed, it was mostly cleaning up code, tweaks, etc… that the user will not see. M v1.0 to M v1.2 is where we had all the changes that the user notices.

Here is a link about NarsilM in general, but it’s not up to date, I think. NarsilM - configurable e-switch firmware for Multi channels, v1.3

No other lights come with NarsilM, although Lexel and Texas_Ace do make drivers that use it if you want to convert an existing light to using it.

I am not entirely sure what changed in 1.3 to be honest. Some back end bug fixes I think.

Somehow I ended up with the NarsilM 1.3 when working on a light and have just been using that ever since.

excellent
thanx

awesome photos

I had today also a GT mini open

as I noticed now also here in the pictures the MCU is not original Atmel, looks like a chineese copy

I had in first Prototype board of fireflies also this MCU and programming it failed

Lexel,

thanks for sharing those pics…

so that means it may not be possible to reprogram the “Chinese clone” of the Atmel ATTiny85 MCU chips in the GT Mini?