I’m just going off of Maukka’s review. On lower outputs it’s .0020 as opposed to the.0080 on max. Still on the rosy side, but tastefully so.
Trying not to look at the ROT66… don’t have the funds. Feel like I’m losing…
Okay, I could not stand it and I ordered D4s in XP-L HI. I have one 26650 in stock, so I will used it.
ROT66 will have to wait. Maybe at this time, he will get rid of childhood defects.
Why are you waiting for?? You get all the lumen in one hot spot with xpl hi.
Make sure you get the black rot66. I was told champagne color step down quicker.
What?!
I think it more likely that the stepdown time is very variable but completely random, depending on the very inaccurate internal temoerature sensor of the MCU.
Ok. I told him to test the rot66 champagne again.
Anyone know what size of Orings this thing takes?
Regarding the “boundary” between regulated and unregulated, what “level” is that at in terms of ramp? Ie if I wanted to set my ramp ceiling to the highest regulated, would it be 100 or 110 or whatever? Thanks!
Actually, is this meaningful at all? I just wanted to pick a max output (sub-turbo) that has a good balance of run time and brightness, or at least a more predictable run time. Imagine bringing this camping and having it on at 90% instead of 50% and the battery dies in less than an hour of use (of course I have many spares).
First, in smooth ramp, there is a little “hitch” when it transitions to or from the fully regulated modes.
Second, the “unregulated” zone blends is really a blend of regulated and unregulated, so being a bit over the fully regulated zone has a fairly minor hit on efficiency.
I knew I had seen this somewhere, I found it again in this post.
I believe the post is discussing ways to set up the variation of light intensity per step, but the info you were looking for is step 85 is the highest regulated output on the 7135 chips.
Exactly.
I set up the photo to make tint variations as visible as possible. Lights running at only ~50 lm, short exposure with low ISO, photo taken at an angle to avoid direct reflections, factory preset white balance, etc. Because, in general, none of our lights are truly pure white.
Well, except for a couple lights people made experimentally to see how close they could get to pure white. And, next to a ROT66-219b, pure white looks a bit green.
Personally, I like that. I think a rosy tint looks more white than a true pure white. That’s why I like the Nichia 219b so much.
Everything in the photos is white though. They’re just different shades of white, photographed carefully to make the different shades stand out.
I’ve had very few lights which I wouldn’t classify as white. Here’s one though. On the right is a D4-219c 5000K. And on the left is a D4 with dedomed XP-G2 emitters. It had good throw, but it made everything look gross. The tint was so far off white that I ended up un-modding it.
Wouldn’t this depend on the max allowed temperature you program in?
Yes, I think the next batch is supposed to have some things fixed.
Different types of regulation.
Ramp level 85/150 is the highest level with fully-regulated power on the 7135 chips. Above that, the FET activates.
Thermal regulation is completely independent of that. It depends on the temperature the user configured. However, thermal regulation does a hardcoded floor, below which it will not attempt to reduce power for heat reasons. On the D4S, that floor is level 60/150.
These values are set in cfg-emisar-d4s.h , along with other hardware-specific parameters.
Yes. The anodizing color is not related to the thermal step-down behavior. That’s just random, based on factory variation in the attiny85 chip.
I have FSM / Anduril working on it though, and it includes a way to calibrate the sensor for more consistent behavior. It works on all Emisar lights and all Fireflies lights so far, plus a few others. And the D4S includes the calibration code too, because it’s built into RampingIOS V3.
That is what the stepped ramp is for. It allows hitting exactly the same level every time, for consistent and predictable runtimes.
Is there a place that breaks down exactly how to use every feature this light has? Like a step by step walkthrough of how to program the thermal config and how to program the ramps/floor/ceiling?