Will XPL2 emitters fit under an unmodified Carclo quad optic? If so, what would be the output with them Toykeeper? 
Nope (IIRC), and no clue. But there are reasons people aren’t using XP-L2 in flashlights. I hear the beam is pretty terrible.
I’m surprised the output was so high with the XP-L HI. I figured its higher forward voltage would limit it to about the same as the 219C.
I think XPL HI has generally always produced more lumens than 219C. That’s been the case since both emitters came out in numerous different reviews. XPL HI simply has higher output. More throw too.
219C may pull more amps so the light heats up faster and battery runs down faster, while XPL HI tends to produce more lumens.
That was my impression too. But based on Texas_Ace’s tests of the D320 219C and the XPL HI V2 1A, they produce right about the same output at a given current. So with the lower Vf of the nichia it seems like it should output more. Maybe this light has lower bin 219C.
I suspect Toykeeper also measured max output on a full cell.
It could be that XPL HI starts off with higher output on a completely full cell but due to the higher vF as the cell depletes the Nichia will overtake it in output.
Now I’m tempted to mod my D4. I have Richard’s new quad board with XP-L HI V3 3C and 219c D320. The problem is that I love the light as is…
Well did edit that part but I guess my point was made except it would have been roasted peanuts, that situation sure was certainly NUTS…
Just the combination I think of those being new jeans and sort of stiff, along with seat belt snugged caused the pocket material to fold up and just press that switch all in under a minute blazing hot, couldn’t even hold the light.
I wonder what the people behind my truck were thinking when they see me bailing out of my now rolling truck, I didn’t even have time to put the E brake then at the same time doing a little jig around in the street holding my pocket, probably looked differently to them, and pulling out this massively bright light, man that hurt, must have looked insane I guess… Still hurting…
TK, not technically correct on one point… the XP-L2 will actually fit under the Carclo optic. It’s a tight fit and you can do damage if not careful but they do indeed fit. (I should say the ones I got early on from Cutter fit, haven’t done it again in a while due to, uh, circumstances beyond my control)
I have the user-configured thermal calibration working. The UI for this is a little more detailed though…
- Fast-click 10+ times, then click and hold.
- Light blinks out the current temperature limit in C.
- Let go of the button if you want to exit now with no changes. Otherwise keep holding.
- Light “buzzes” for two seconds. Let go during this time to set limit to the maximum (~70 C). Otherwise keep holding.
- Light goes up to turbo.
- Hold until you feel it’s too hot, then let go.
The light then blinks out the new temperature limit in C, and shuts off.
This way, you can check the current number, set it to maximum, or set a new calibration by feel. Also, setting the ceiling to a high temperature … will hurt. But that’s probably a good thing.
Does this seem like a good way to do it?
Sure does to me, great work TK, is this in the next release…?
I like that it flashes out what it is currently set at so you can check where you left it.
XP-L is pretty beast… but I think I’ll go Nichia on this thing. Would be my first floody Nichia and highest amped light. My mouth is watering at the thought.
I’m getting pretty close to done.
Currently, there is no way to disable mode memory. It’s easy to bypass during regular use, by turning the light on with a long-press or a double-click… but it could be a potential issue when kept in a pocket or a bag if you left it in a high mode and it gets tapped by accident.
Making it optional would need some sort of config mode. Adding an actual config mode would require deeper changes and make the interface more complicated.
So, I’m trying to figure out if it’s okay to always have memory or if it needs a config mode.
Anyway, here’s the UI so far:
Changes from the original version include:
- added full thermal regulation with user-calibrated ceiling
- added mode memory on click-from-off (default 100% 7135)
- made beacon use current ramp level
- made double-click toggle turbo (not just one-way any more)
- made LVP drop down in smaller steps
- calibrated moon to ~0.3 lm on Emisar D4-219c hardware
- blink when passing the 100% 7135 level, for reference
- fixed display of “zero” digits
- fixed/cleaned misc internal things
DROOOOL
I NEED 
:laughing: :smiling_imp:
I LOVE that UI, thank you for your wonderful work TK !
I wish the thermal config was that easy in my TA driver with Narsil (I have it in a Nitecore HC30 and struggle to use the thermal config 
)
If there is no way to configure memory mode, how about a long press to memory mode, and single click is on in low mode?
While I can flash the ATTiny, I’d much rather see this UI available directly from Richard…. the more I see here the more I want to see it in my shopping cart at mtnelectronics.com. 
The UI looks great. Well the FW fit on a attiny25?
Love the new UI!
Probably an ATTiny85