TOM E this UI looks great
is it possible to flash it on other drivers too ?? if yes which do you recommend ??
When we were starting this Q8 I asked in a new topic if anybody knows a flashlight that is sold with a AT85 and no answer
But you need something like the parts list in the OP
AT85, fet and 7138 chip
We would love to see people test Narsil, the more the better!
Well... Of course, but must be a Tiny85. I dunno anyone selling them. I got the firmware running on 17 mm's and 22 mm's, and even one of these SRK 7135 drivers, but swapped the MCU. Best board (I think) is or will be this one: http://www.mtnelectronics.com/index.php?route=product/product&path=67_117&product_id=663, but still need to swap the MCU to a Tiny85. I got a bunch - need to reflow them and test.
Hmm. Is there a pause once you reach MAX before it starts ramping back down? Or does it stop completely? And will have to press and hold switch again to ramp down.
In video, it looks to start ramping down almost immediately making it very hard to stop at the MAX mode.
Honestly, I wouldn’t mind just having it stop all ramping once it reaches MAX. I have a light that stop ramping and a light that ramps back down, and on the light that ramps back down, I always second guess myself if the light is on MAX or slightly less because of the ramping back down.
But if not, I think it should be at the same pause as on the moonlight.
Of course a double click brings it to max right away.
Yet a little extra pause sounds logical, but up to Tom 
Ohhh, no - sorry, was hoping you could hear the clicks - the sounds of the clicks make a big difference. It ramps up to max, then stops there. I was releasing the switch, then doing a press&hold to ramp it back down. Sometimes, usually the first time in the video, I didn't hold ot long enough to hit max, so had to press&hold again to hit it.
It will stop ramping at max when going up, and at the lowest level (moon of PWM value of 3) when ramping down.
Below are the new 150 level, 2.4 second PWM level tables, using TK's utility to generate them. Notice in the FET table, the last 29 values are above 50% (128 and higher), and it gets pretty hard to differentiate anything much above 50%, so it's kind of hard to tell the moment it reaches max. Might be easier outdoors in true low light conditions, not sure. Was thinking of adding a real quick blink at max, just to signal you got there, but that might be distracting too, but would make my testing and videos easier 
.
//---------------------------------------------------------------------------------------
#define RAMP_SIZE 150
#define TURBO_DROP_MIN 115
// min level in ramping the turbo timeout will engage, level 115 = 106 PWM, this is ~43%
#define TURBO_DROP_SET 102
// the level turbo timeout will set, level 102 = 71 PWM, this is ~32%
// Ramping Modes, 150 total entries (2.4 secs)
// level_calc.py 2 128 7135 3 0.3 150 FET 1 1 1500
PROGMEM const byte ramp_7135[] = {
3,3,3,4,4,4,5,5, 6,6,7,8,9,10,11,12,
13,14,15,17,18,20,22,24, 26,28,30,33,35,38,41,44,
47,51,54,58,62,66,70,74, 79,83,88,93,99,104,110,116,
122,128,135,142,149,156,164,172, 180,188,196,205,214,223,233,243, // 49-64
253,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,255,255,255, 255,255,255,255,255,255,255,255,
255,255,255,255,255,0 // 145-150
};
PROGMEM const byte ramp_FET[] = {
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0, // 49-64
0,2,3,4,5,7,8,9, 11,12,14,15,17,18,20,22,
23,25,27,29,30,32,34,36, 38,40,42,44,47,49,51,53,
56,58,60,63,66,68,71,73, 76,79,82,85,87,90,93,96, // 96-112
100,103,106,109,113,116,119,123, 126,130,134,137,141,145,149,153, // 113-128
157,161,165,169,173,178,182,186, 191,196,200,205,210,214,219,224, // 129-144
229,234,239,244,250,255 // 145-150
};
//---------------------------------------------------------------------------------------
U hit it right on once again haha. I dunno call me lazy or maybe I just forget instinctly about the double click to high.
But when I turn on the light , and say I need more light, I tend to press and hold switch to ramp up more often than doing a double click.
I may just have a lazy thumb hahha
Thanks for greetings!
I think I know what you mean ( I have SRK also), depending on design that could be achieved too.
Thanks for support!
I think advantage would be versatility of cell's by user preference. Of course some might think that too big, but think of having 0,33l soda can in your hand and it would be smaller. If it would be with carrier that would give them ability to make it in series of higher voltage if needed. Please bear in mind that my idea was it being user preferrable between those 2 cells types.
You got nice points there, thanks. And special thanks for your effort in ramping, I really like watching it and look forward seeing it in my hands (with Q8).
I hear you. It is always matter of opinion.
Here is another sketch with little different position of 18650's so they would align different. There is now possibility (blue) for "triangular" shape of tube that could be nicer for hand and also work as antirolling. Downside being it would have to made out of solid bar.
And one more with body tube like, since I realised that there could be fitted 7x 18650 in same place of 3x 26650's (or even little smaller). Here they would certainly outperform.
Thanks for your opinions. And sorry for my "mad" inventions
. I really like all of your effort guys. I'ts not like I would make it my own and force it to be too big (or something you dislike) for you. I'ts just me and my idea's, that sometimes I might be re-inventing wheel. Nevertheless I like to say them out and see if they any good. I really enjoy reading this forum, and watching group buy's where is productive conversations.
Like before feel free to shoot my ideas, I appreciate your feedback.
Best Regards
Phoenix_FIN
Wow! 7x18650? Runtimes would be immense. But that looks like a completely different project. IMHO.
I think we should try to squeeze one more cell in there, in the name of the light (samsung 30Q8) Just kidding.
Or maybe it would be appropriate for DBSAR's lantern SRK for extreme runtimes.
-Phoenix_FIN
I like those sketches. What would the diameter of the battery tube end being using 3x26650 vs just 4x18650? I like the cell versatility idea.
You’d need about 13mm (half an inch) more.
And you’re all conveniently ignoring the springs which won’t line up for both cases. I can’t see how it will happen. Not without the whole thing going downhill with more complexity.
@Tac Gunner : I haven’t thought about handle. And I’m not quite sure did I understand your question correctly? Did you mean mean difference between SRK style 4 cell’s tube vs my sketch tube? If so it would probably be around ~10mm depending on wall thickness so @fixed it has it right.
@fixed it : Depending on sketch it could be done couple ways
1) Solid copper "pole" that is placed correctly to work with different cell's, that would probably reguire spring on negative contact under driver to contact bodytube. Or carried by unanodizided thread that would be long enough to allow different cell lengths.
2) Springs in positive side. For example like a one solid pcb "floating" that got enough surface area to allowing all cell configure's. But that would reguire using button top cell's. Not sure if I can describe it good so that you understant, but like the way Nitecore has it in SRT-7, only bigger.
3) Using spring contact pin, like this (only of example probably not the correct one for the job, but there is plenty of others with different specs like this.)
But you are right at it, probably would be more complex. But I'd like to think every obstacle can be overcome it's just matter of time.
-Phoenix_FIN
Moinsieur you own flashlights with at85 i think how about the x5 and x6 they both have the att85 does ths nasril work on them ??? i would flashit it right now
Yes that it was I referring to. Not sure why I said “handle end” instead of battery tube, I’ve edited my above post. With the increase in size that would probably put it at around a 70-73mm diameter? If so then never mind on the 3x26650, that would just be to large, mid 60-65mm is large enough for me. As for the springs I’m sure that could be worked around but at the point Fixed It is right, to much complexity to stay with in the price range set.
Let’s do the job properly and build the light for 7 x 26650 …
… and add some little wheels perhaps …
I’m in for one =)
Speaking about button tops. Does the Q8 need them much like the M2?
Hmm yes let’s keep it to 4 18650
And let me tell you that if this Q8 goes well I like to pursue a Q4 (taking AA and 14500) (hold your horses first this Q8 )
And if that works I like to pursue a Q2 (AAA) and Q10 (26650) yet the Q10 needs something special in terms of LEDs but that is so far down the road we’ll have to see what is available then so again please focus on the Q8 while that is not even in our hands
A 4*18650 tube is still able to be put in a pocket and does not require a handle, so let’s stay on this.
2 mxlu
Welcome to BLF; cool your first post dedicqted to the A_1 Thanks:
Yes button tops are the cells needed.
I’m in for a Q4 
Sorry, couldn’t help myself. Back to the Q8!