Fireflies ROT66 Flashlight

Any tips on accessing the potentiometer for the aux LEDs? Do I unscrew the bezel or does the board come out the back? I tried to unscrew the bezel and it was TIGHT, didn’t get anywhere (including using a strap wrench). I ordered the unglued version so I was anticipating that it would be easier to take off. Thanks in advance.

Glad I got the ROT66 version with no auxiliary leds. Seems like they have just complicated things.

Well that all depends. I got the ROT 66 without, and just got the PL47 with, and I much prefer the with. Once you understand the basic control it's simple. The brightness though is a personal pref, so without access you either live with the brightness it came with, or turn it OFF (7 clicks to blink, then 7 clicks again to OFF).

Gotta take the bezel off to access that. If it’s stuck, heat might help.

Would just rather not have them. Serves no purpose for me personally. Although, I have an E07 coming, so I won’t have a choice…

You can turn them off with 7 clicks.

I don’t get why anyone buys a ROT66, PL47, E07, D4S, if not for the AUX LEDs and lit switches. Are there not better choices if you are anti-glow anything?

Because the original ROT66 219b didn’t come with aux leds. Bought it to use as a flashlight, not a conversation piece. And a wonderful flashlight it is.

I know they didn’t for a brief, initial minute, but they all do now. I find a good deal of practicality in them as well, it’s good they can be turned off for you people that do not.

It's the bling factor... No literally it blings... What else would you call it?

My PL47 aux leds don't seem so bright in room light, but in the dark, it's a significant glow - last night seemed a little too bright for the nightstand pointing towards me.

I just received my xpl hi ROT66 and I have noticed that when I put it on Turbo there is flickering it also doesn’t seem as bright as I thought it would be. I do not have it in muggle mode since I learned about that with my PL47. Has anyone had this happen to their Light and if so is there anything I can do to fix it? That means am I doing something wrong or is there a fix? All help is appreciated.

I have XP-L Hi ROT66 and don’t notice flickering and seems as expected lumens on turbo. Using Samsung 30Qs.

I like aux LEDs but tried Toykeeper suggestions above and can’t turn em off.

You also have an Anduril version?

Like TK said, you might have one that is not controlled by the mcu. I’m guessing some were wired to the MCU and some where not.

It should not flicker. On turbo it should be full power. Does it flicker on slightly less than full power or only on turbo?

What batteries do you have in it? Are they unprotected?

Make sure the carrier screws are tight.

Using flat top 30q from fireflies and yes when I ramp up to the max lower mode it flickers a little then too

Hmmm, sounds tricky. It could be a fault in the driver, but I would check all the usual things first. Loosen and retightened the driver retaining ring - if possible. (Is it glued?) Clean the battery tube ends and where it contacts the retaining ring. Clean the spring contacts. Try flipping the battery tube around. Tighten the battery tube first, then tighten the rear cap 2nd. Clean your carrier springs and contacts. Make sure your carrier screws are snug and not loose.

I think that’s about all the average person can do. If it still flickers the problem might with the driver.

Thanks JasonWW. Followed your advice still a little flickering on top ramp level and turbo. I am going to swap out batteries and try that when I get home from work. Doing my own crude light comparison my XPL Hi cool version does not appear as bright as my Sofirn Q8 although the ROT66 is rated at twice the lumen output.

Rot66 xpl hi measured 7050 lumen with my Texas ace lumen tube. ( using Sony vtc5a).

If you are not getting 6500-7000 , then something is wrong with your light…

I would clean the carrier, and all the connection just to make sure…

I found the screws were a bit loose in my ROT66 carrier, and the driver retaining ring was a bit loose as well. The way the carrier works is tightening down the end cap forces the ground ring on the carrier to make contact to the driver retaining ring, so the driver spring must compress a fair amount. Not sure how much you can do, but you can do a one cell test without the carrier using just one cell and a decent wires. Take off the battery tube, press down on the cell on the driver spring, then hold the wire to the neg. end of the cell to the driver retaining ring, and if you got good contact, see if you still have the problem.

Thank you for the help Newlumen and Tom E. I will follow your recommendations once I am home from work. I still love the look and feel of the ROT66 and my PL47 and when the E07 arrives next week sometime I am sure I will love that one too. Like the Emisar lights, these lights are unique and great looking lights. They also do amazing things in such compact designs.