Fireflies ROT66 Flashlight

Yes Vinh was referring to the crushed emitters and/or misaligned emitters he got when talking about poorly assembled. He loves the design and quality of components on the light otherwise.

The driver retaining ring is threaded normally, not reverse. However, it is a bit stiff. I don’t know if it’s normally glued, but I asked specifically for a light with no glue anywhere, because the whole point of me having one was to open it up for development purposes. Glue would defeat the point.

Thanks!
I’m not sure if I should heat the head with heat gun. There is plastic inside. Don’t want to destroy anything. Since I’m not in a hurry I might wait for someone else taking the risk :smiley: .
But I might drill two smaller, not conical holes into the retaining ring for more grip with my tool.

Btw., there have been some strange inconsistencies in lumen measurements done by members. Might these have happened due to poor battery contact?

i just saw the movie (again), 30 days of night…makes me want to visit. with a months worth of batteries, of course

SST20 95 cri version ordered. Will have to have a nice little bout between the Nichia SW45k R9080 version, Samsung LH351D+804 filter from Vinh, and this SST-20 version.

I’m only aware of one person whose numbers are off, and that appears to be caused by unusual measuring equipment.

Among people with calibrated spheres / tubes, the values I’ve seen reported have been pretty consistent and seem to vary mostly with temperature. Warm batteries seem to produce more lumens than cold batteries.

Nice. What do you guys think about 9x SST20 6500K CW 8500lumens CRI66?

By the way, I am a fan of CW… i even bought blf gt xhp35 in CW…

Just ordered a SST20 4000k 95CRI version myself. This thing looks fantastic, 5000+ lumens of high CRI light in a relatively small form factor, I seriously can’t wait. If this lives up to my hopes it’s going to get a lot of use.

Same here.

I’m planning to calibrate a 14x7135 build on the SST20 4000K 95CRI model soon, and I’m looking forward to seeing how it looks. The only other 4000K light I have is a BLF A01, but it’s 1xAAA so it doesn’t have a lot of lumens or runtime.

Since the 219B model has 7x7135 and all other models have 14x7135, they need different firmware. I already made a 7x version of Anduril, but still need to make a 14x version. The main differences are the ramp shape and default config values, but it may need other tweaks as well.

I can’t wait to see the results of that build. Please update the thread or make a new one.

Black Nichia version showed up today. I used HG2 batts. Great rosy color. Blue switch and firefly is quite impressive. Decent spill and throw. 200 yards and the deer stood out! Nice lanyard. This is one comfortable light. Narsil 1.2 works perfect! Impressive light and very satisfied. Thirty minutes use. Warm but not too warm. I like as is. No changes for me.

95 cri @ 5000+ 4000k lumens, at that price, shit… how could I possibly resist?

Besides, I have plenty of xpl lights already, I don’t have any sst20 lights. Might as well give them a shot.

How pleasant the beam looks really dependent on the tint, where it sits with respect to the BBL, instead of the CRI. I tried many 90CRI 219C 4000k and the LH351D 4000k 90CRI and could never get myself to like them no matter how much I try due to the yellow/green tint. However, I recently tried the 4000k E21A 9080 and 219B 4000k 9080 from Clemence, and they are just beautiful. I see absolutely no hint of yellow or green. Just pure neutral white. I don’t even notice any rosiness unless I compare it side by side with a 219c 4000k.

Hopefully this SST 95CRI they are using is really below the BBL otherwise at 4000k, it will be yellowish.

The nice thing about the ROT66 is that its bezel can be unscrewed, and you can just sandwich a Lee minus green Zircon filter between the lens and optics if the beam is slightly too green.

I really want a multiple optics light sporting E21A 9080 emitters.

I have values for calculated lumens for the ROT66 nichia. Can someone check it with real measurements?

calculated modes for Maukkas Nichia + Lexcel code
(doesn't value nonlinearity from the LED curve, doesn't contain Moonlight)
(1+7+FET)

ROT66 Nichia in Lumen
Modeset 1 3860
Modeset 2 102, 3860
Modeset 3 102, 705, 3860
Modeset 4 10, 102, 807, 3860
Modeset 5 10, 40, 102, 807, 3860
Modeset 6 6, 32, 102, 378, 807, 3860
Modeset 7 3, 80, 212, 433, 807, 2218, 3860
Modeset 8 807, 3860

The Nichia 219B has a pretty nonlinear output curve. It has a slow startup time at least, and seems like it may have a slow fall time too. To estimate the output, you may need to go from ~10/255 to ~245/255, instead of 1 to 255.

There’s a guy adamant on Twitter that Vinh has been in two movies

Has anyone got their replacement head for the ill-fated XP-L yet?

I received my SST-20-W40H ROT66 a few days ago. Excellent and pleasant tint, but I think it is of 7x7135 because its output is pretty close to the 219B version when both driven by 100% 1x7135 + 100% Nx7135 (level 3 of mode-set 4).

Alright, just checked with Fireflies. SST-20-W40H is of 7x7135, while the cool white SST-20 is of 14x7135.