Fireflies ROT66 Flashlight

Okay, I corrected my earlier post and let the fellow in the video know it’s 150 steps.

I do get confused that it’s 150 steps, but I think it’s in the code where you have 255 levels. :disappointed: Ah, confusing.

It’ll get more confusing when we get drivers with 16-bit PWM counters. Then it’ll be 0 to 255 sometimes and 0 to 65535 sometimes. But probably still 150 ramp steps, because that number seems to work pretty well.

Ah so that’s what you meant by 125/150 earlier. I’m gonna try experimenting with maybe 120/150 or 115-110/150 to see if I can get a slightly lower output that will manage heat better.

Man, the temperature calibration was a good 10c or so off on my particular ROT66 from the looks of it. I didn’t have a thermometer on hand to get a completely accurate reading of my room temp, but I do know it was around 18-22c, so I dialed in 22c just to play it safe. My ROT66 read 35c!
I also changed the temp limit from 45c to 55c.

I also set the ramp ceiling from 125/150 to 120/150, and now it manages what looks like a 1100/1200 lumen output for at least 10 minutes without any heat issues. It did get warm, but it never got super hot, so I think I found the level where it can shed heat well enough on the SST20 4000k version.

You didn’t have the light running beforehand, did you? If so, the lights internal temperature might have been higher than its external temperature. I mention it because a lot of people forget about this.

I let it rest 30 minutes. It wasn’t cold to the touch like my other ROT66, but at the same time it had ample time to shed any heat. I’m going to go back later on and re-calibrate the temp again when it is cold to the touch to get it completely accurate though.

Why are you still messing with cr@ppy 8 pin MCUS ?

The days of DIY, or shabby “commercial” manufacturing, maybe with a hotplate or toaster oven, are surely over.

Sorry but this is reality.

Prove me wrong., please.

Re-calibrated the temperature sensor to be more accurate once the light was cold. The factory setting was still a good 7-8c off though.

The proof that you are wrong is right in front of you, if you could only be bothered to open your eyes and look.

I can’t say why these specifically, but we’re using such basic MCU’s probably because until recently, we weren’t using much of their capabilities. I mean, at one point, as far as I know the norm seemed to be essentially a convoy style Nx7135 single channel 3 or 5 mode light… doesn’t really need much of a chip to control that. Anyway, apart from the limitations we’re starting to have (and, after all - it’s not as if an atmega is gonna fit in a d4) they’re not that bad. Easy to program, for one thing.

My ability to resist finally broke down last night. My wife is probably not going to let me live down buying another light, but oh well. I went with black on the hope she’s less likely to notice it.

I’m really looking forward to my first experiences with Anduril and SW45K ranked emitters. The only other 219B light I have is just R9050 binned, I think.

It will be hard for her not to notice with the lit up auxiliary board! My wife was drawn to it right away like a magnet.

So true…. LOL! :smiley:

I'm still working on my cover story. Maybe if I mod my Convoys with illuminated tailswitches I can confuse her.

My fall back would be to distract with a gift, but she's not a jewelry person, so I've got to figure out something else.

I keep hoping that if she sees the right copper, brass, anodized titanium, or otherwise fancier lights, she'll catch the bug. So far, it hasn't worked.

I got is as a constant reminder of how it looks when I gaze deeply into your beautiful eyes honey.

The ROT66 is nice, but it’s not worth giving yourself marital problems. Don’t be deceptive about your purchases… Communication is important.

Fear not. I’m joking about the distress over how to explain it to or hide it from my wife.

I do expect to have to endure a 3rd degree eye roll and occasional teasing about an excessive number of flashlights, but both of us make discretionary purchases for ourselves rarely enough that items in this price range are a, “do we have a place to store it?” discussion, rather than a, “can we afford it?” topic. It’s definitely not a matter where reciprocation is demanded, although I would like to think of a comparable gift.

Or you cold always use Nev’s approach , although I definitely would not recommend it if you want your state of ‘maritial bliss’ to continue very long. :wink:
.
Flashlight Collection Downsizing

Says Nev whilst panically looking over his shoulder to make sure his wife didn't read that