New 4XP Noctigon MCPCB for quad optic

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Agro
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AEDe wrote:
X3 wrote:

I wish all the Russian crowd that show itself here to bash a new product was that effective to help BLF in making new products… but it seems easier to bash the Q8 for some people…

It seems almost nobody on BLF interesting in hi efficiency driver , and convinient for daily use UI. DD and wow effect are the main thing here. It is great pity)

You’re very wrong. See the joy after every post in the GXB20/GXB17 threads.
But there’s a place for FET+1 too. It’s cheap and for many uses – it’s good enough.

Personally I can’t wait for Emisar D4, though I admit I hoped for a 3-channel driver.
And at the same time I’m seeking for the absolutely most efficient driver that I want to have in another light.

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Jerommel wrote:
I think it would be interesting if someone from Russia (or any fonarevka member) would offer to sell those nice drivers here on BLF (and in English language).
Especially in Europe it is hard to find interesting drivers.
KD has a couple, but usually with horrible mode spacing… FT is the same..

I’ve been thinking about it too…
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Jerommel wrote:
I’m definitely interested.
But i get lost on fonarevka because of the language…

The reality is next. If you wanted to make diy driver, you probably gonna have lots of questions, so that would be rather hard even reading forum through traslator. So I can answer the questions and give a few tips etc. how to assemble some of the fonarevka drivers. For example me and “Serp” know how to calculate Indigo, we’ve passed through this way.

Shipping is not an issue from Ukraine it’s about 23$/1 kg by air to any EU country. Yeah.. I wish it would be cheaper but drivers are rather lightweight. As always need people and good contacts to cooperate. Interesting topic, worth to think about that more detail.

Jerommel wrote:

It seems Eastern Europe has much more experience and knowledge of electronics.

Not really, flashlight market and users demands are different. Don’t think that all of fonarevka hates D4, many folks gonna buy it Smile
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It is nice to see so many russians (and ukrainions Smile ) chime in in this thread. I do not understand much of electronics but I like what is going on on Fonarevka, and if the forum was a bit more accessable (the language is a barrier for reading, but certainly for posting there, and perhaps also the culture is different) I’m sure there would be much interest from folks on BLF.

mattlward
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Jerommel wrote:
I think it would be interesting if someone from Russia (or any fonarevka member) would offer to sell those nice drivers here on BLF (and in English language). Especially in Europe it is hard to find interesting drivers. KD has a couple, but usually with horrible mode spacing… FT is the same..

I agree, I am a little interested in trying them as well. I have been trying to get enough info from google translate, but it is not very helpful. I have not even found where to source the boards yet.

EDC rotation:
FW1A, LH351D 4000k (second favorite)
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Nichia 4000k sw40 r9080 (favorite light!)
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
S2+, XM-L2 T6 4C

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It is necessary to create a topic about Indigo 5.2 here on BLF.
There are at least a few ready-made solutions that have been implemented by mag_vitaliy.
http://forum.fonarevka.ru/showthread.php?t=36000
http://forum.fonarevka.ru/showthread.php?t=35427
http://forum.fonarevka.ru/showthread.php?t=30582
http://forum.fonarevka.ru/showpost.php?p=999143&postcount=550

The most difficult thing is to make a circuit board (for me).

Plus there are some moments for calculating the inductance and capacitors.

The basic principle of layout of elements on the board is considered. To ensure that the power part does not interfere with the signal.
http://forum.fonarevka.ru/showthread.php?t=26562&page=8

Reyden half a year ago delved into all the subtleties of building a driver.
But. Even if you assemble the driver according to the scheme that in the indigo theme on the most common elements – it will also work Smile
This is a very cool driver Smile

INFERION, the creator of indigo, these are the main points (for me, they were important)
http://forum.fonarevka.ru/showpost.php?p=421591&postcount=436
http://forum.fonarevka.ru/showpost.php?p=421619&postcount=438
http://forum.fonarevka.ru/showpost.php?p=421635&postcount=440
http://forum.fonarevka.ru/showpost.php?p=847002&postcount=202
http://forum.fonarevka.ru/showpost.php?p=845141&postcount=193

This is very interesting and deserves a separate topic Smile

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Serp wrote:
Many were waiting for the same functionality as in the Meteor.

If this had been a mini-Meteor, I would not have bought two. However, it is reflashable with inexpensive tools, if you would like to port Indigo to it. I would be happy to include that in the repository to help everyone find and access alternate D4 firmwares. I’m planning to make some alternate firmware for it too. Smile

Serp wrote:
The code for indigo 5.0 is also open. But it’s in assembler
Indigo_5.0_final.txt
http://forum.fonarevka.ru/attachment.php?attachmentid=87964&d=1382298519

If someone irritates links to a foreign forum, I’m sorry. It’s just a way to show the best that is for today Big Smile

Don’t worry, outside links are cool here. Smile

I have Indigo 5.2, dated 2013-12-17. It is old, and is not the same code that the Meteor uses. Do you have a copy of the Meteor code to share under an open-source license?

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Reyden wrote:
I just wanted to say that M43 driver could have full smooth dimming but it’s more technical issue.

Exactly. The D4 has no such technical issue.

Reyden wrote:
That’s the first time that I see this graphs, who is the source?

I made that graph. It shows the output levels for three lights on a visually-linear scale.

Reyden wrote:
I might have missed something because I’ve never used M43 only his free beta version “Indigo” they’re close but not the same regarding to interface and in reality it has completely smooth ramping, as i can see it.

Not buying a Meteor is a good way to convince a businessman to make a mini-Meteor. Big Smile

The M43 has smooth transitions between levels. It gives a nice imitation of ramping smoothly, especially when adjusting levels in UI3. However, it can only stop at 9 discrete levels. The in-between levels are inaccessible due to the technical issue, and that is what the graph shows.

The D4 has actual smooth ramping, or pretty close anyway, with 150 discrete levels. It has stair-steps, but they’re very small and very close together.

Reyden wrote:
Open source? It’s fully open as mentioned above. May be the time for dedicated “Indigo” topic on BLF has come. Spread the light! Smile

Unfortunately, Indigo is not the same as what the Meteor used. Indigo also has no published license, so I cannot legally distribute it in the firmware repository. Indigo-compatible drivers are not easy to find or buy in most of the world. Assembly code may also limit its use somewhat, since it raises the barrier to entry.

Can you help with any of these, to make it fully open and available?

“Open Source” means more than just putting code on a web site. It also means giving the code a license which explicitly allows people to use and modify it. There are several open-source licenses to choose from, but I recommend GPLv3 for flashlight drivers.

Reyden wrote:
Jerommel wrote:
I’m definitely interested.

I can answer the questions and give a few tips etc. how to assemble some of the fonarevka drivers. For example me and “Serp” know how to calculate Indigo, we’ve passed through this way.

… As always need people and good contacts to cooperate. Interesting topic, worth to think about that more detail.

Jerommel wrote:

It seems Eastern Europe has much more experience and knowledge of electronics.

Not really, flashlight market and users demands are different. Don’t think that all of fonarevka hates D4, many folks gonna buy it Smile

I like where this is going. Smile

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Am I the only one who finds ads on fonarevka extremely annoying?
Anyway, back to reading.
Very interesting links. Thank you Serp!

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ToyKeeper wrote:
Can you help with any of these, to make it fully open and available?

“Open Source” means more than just putting code on a web site. It also means giving the code a license which explicitly allows people to use and modify it. There are several open-source licenses to choose from, but I recommend GPLv3 for flashlight drivers.


Typically there are as many recommendations as there are recommenders. Wink
I tend to recommend CC0.
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Agro wrote:
Am I the only one who finds ads on fonarevka extremely annoying?

Registered users have the option to disable forum advertising in their profile.
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Of course Indigo is not a Meteor. In the Meteor, improved algorithms and other modes. And Meteor commercial product. The firmware have only manufacturer.

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AEDe wrote:
this host can carry 5-7W for long time. With 10-15W consumption it would be hot like zebra on turbo. With 20W+ it would be an useless toy. I have 30W pocket light of similar size …

If I understand correctly, the D4 might be able to do 60W with XP-L HI emitters and a high-amp cell. It’s like a smaller version of the Q8, and the Q8 does over 20 amps. I have a single-cell triple-XPL which does 15 amps. Limiting it to just a few amps would be practical but kind of boring.

The high modes are not intended for long-term use, and if it’s too hot or too bright, there are 100+ lower levels available. Hold the button until it is bright enough, then let go. It does not need to be on “wow” mode all the time.

AEDe wrote:
After M43, D4 is huge step back

Many people feel exactly the opposite about this.

In general, I would really appreciate it if people would try not to phrase personal preferences as if they were true for everyone. They’re not. Different people like different things, and it appears that all the recent drama in this thread exists only because the D4 caters to a different population than the M43. It’s a matter of taste, not quality.

Below are a few more examples of things which could be considered over-reaching or rude:

AEDe wrote:
I hope to see good drivers in the next Hank s light.
gukase wrote:
I don’t want cheap flashlight. I want to spent my money for good thing that I can use every day.
AEDe wrote:
I was waiting for good 4led light with good modern driver …
AEDe wrote:
I agree to add 15-20 bucks and even 25 bucks for good driver .

Many people feel this is a good modern driver, not cheap or bad, and that it will be great for everyday use. It’s just a different type of modern driver than what you wanted. Me, I was hoping for a 3-channel driver, like a FET+N+1. But I’m okay with a FET+1.

AEDe wrote:
But we received another astrolux. It’s as if the ferrarri will release ford fiesta.

I’m sure insulting people is the best way to make things go your way in the future.

AEDe wrote:
astrolux and manker exist with similar lights.

Comparing this to Astrolux and Manker is a false equivalence. The Astrolux attempt in particular was a disaster.

Qwertus wrote:
Yes, 2 years we waited Noctigon Meteor M13/M14 and got Noctigon Astrolux. Disappointment.

The D4 is not an Astrolux. I’m sorry you didn’t get a mini-Meteor, but a mini-Q8 is a silly reason to go around insulting people. Even if the runtime graphs aren’t perfectly flat, and even if it might be a few percent less efficient in some modes, it excels in other ways and is still better than most torches in the world.

AEDe wrote:
… and all these have low quality , pwm or dd driver bad ui and so on. And now there is one more such light.

You have never touched a D4, and claim it is low quality? You claim the UI is bad without trying it? You reject anything with PWM or DD, even though the FET+N+1 multichannel PWM technique is virtually the same as what some premium brands use for current control? Maybe this is just a translation issue, but it sounds like hot air.

AEDe wrote:
It seems almost nobody on BLF interesting in hi efficiency driver , and convinient for daily use UI. DD and wow effect are the main thing here. It is great pity)

It seems almost nobody named AEDe interesting in productive discussion , and respecting other cultures. Hyperbole and insult are the main thing here.

We can stop phrasing exaggerations and personal taste as objective universal truths, please?

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Ok, so how does it work? There is ramping from min output to max output, and then there is the FET turbo. So do we know approximately how low low is? And there is a gap between max and FET turbo right? So how bright is max?

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ToyKeeper wrote:
I have Indigo 5.2, dated 2013-12-17. It is old, and is not the same code that the Meteor uses. Do you have a copy of the Meteor code to share under an open-source license?

This version is free for non commercial use. Newer than M43 firmware version has been developed but it’s not wide spread and avaible only locally to support diy community. Indigo and M43 schemes are almost the same, disadvantage of the fist one is Attiny85 which has not really good built-in amplifier vs Attiny45, that’s it.

40W driver costed me 20-25$ using best end components from digikey and local stores. Here’s original Indigo interface description. Simple words there are 3 main modes with discrete and smooth regulation.
https://drive.google.com/open?id=0B5UZoGmkPR9UQ2FjeENRNDRGcDg

ToyKeeper wrote:

Can you help with any of these, to make it fully open and available?

Yes, as you said there are many types of open source licences, this question should be discussed with the author. I’ll try to clarify this topic. What’s your goal, you wanna share drivers and do bussiness? At the moment we’re not allowed to do this.
Serp wrote:
Reyden half a year ago delved into all the subtleties of building a driver.

Yep.. that was crazy days Smile Got a tons of experience.
https://photos.app.goo.gl/htQmB5JpTjaOt3wD3
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hIKARInoob wrote:
Ok, so how does it work? There is ramping from min output to max output, and then there is the FET turbo. So do we know approximately how low low is? And there is a gap between max and FET turbo right? So how bright is max?

I don’t have a D4 to measure yet, but as far as I can tell it will likely go from about 1 lumen (maybe lower?) up to about 3000 lumens (ish, depends on emitter type and battery type). My light box maxes out at about 3000 lumens, and I would not be surprised if the D4 exceeds that. If it does, I’ll measure it in some other way.

There is no gap in the ramp. It is a smooth slope all the way from 1 lm to ~3000 lm, with 150 steps between.

This is only an estimate, based on my Q8 prototype which should be very similar, but I expect the 150 output levels will be very similar to this:

1: 1.00 lm
2: 1.30 lm
3: 1.64 lm
4: 2.05 lm
5: 2.52 lm
6: 3.05 lm
7: 3.66 lm
8: 4.34 lm
9: 5.09 lm
10: 5.94 lm
11: 6.87 lm
12: 7.89 lm
13: 9.01 lm
14: 10.23 lm
15: 11.56 lm
16: 13.00 lm
17: 14.55 lm
18: 16.22 lm
19: 18.02 lm
20: 19.94 lm
21: 21.99 lm
22: 24.18 lm
23: 26.51 lm
24: 28.99 lm
25: 31.61 lm
26: 34.39 lm
27: 37.33 lm
28: 40.43 lm
29: 43.70 lm
30: 47.14 lm
31: 50.76 lm
32: 54.55 lm
33: 58.53 lm
34: 62.70 lm
35: 67.06 lm
36: 71.63 lm
37: 76.39 lm
38: 81.36 lm
39: 86.54 lm
40: 91.93 lm
41: 97.55 lm
42: 103.39 lm
43: 109.46 lm
44: 115.76 lm
45: 122.30 lm
46: 129.08 lm
47: 136.10 lm
48: 143.38 lm
49: 150.91 lm
50: 158.70 lm
51: 166.76 lm
52: 175.08 lm
53: 183.67 lm
54: 192.54 lm
55: 201.70 lm
56: 211.14 lm
57: 220.86 lm
58: 230.89 lm
59: 241.21 lm
60: 251.83 lm
61: 262.76 lm
62: 274.01 lm
63: 285.57 lm
64: 297.45 lm
65: 309.65 lm
66: 322.19 lm
67: 335.06 lm
68: 348.26 lm
69: 361.81 lm
70: 375.71 lm
71: 389.96 lm
72: 404.56 lm
73: 419.52 lm
74: 434.85 lm
75: 450.55 lm
76: 466.62 lm
77: 483.07 lm
78: 499.90 lm
79: 517.11 lm
80: 534.72 lm
81: 552.72 lm
82: 571.12 lm
83: 589.93 lm
84: 609.14 lm
85: 628.77 lm
86: 648.82 lm
87: 669.28 lm
88: 690.17 lm
89: 711.50 lm
90: 733.25 lm
91: 755.45 lm
92: 778.09 lm
93: 801.17 lm
94: 824.71 lm
95: 848.71 lm
96: 873.17 lm
97: 898.09 lm
98: 923.48 lm
99: 949.35 lm
100: 975.69 lm
101: 1002.52 lm
102: 1029.83 lm
103: 1057.64 lm
104: 1085.94 lm
105: 1114.75 lm
106: 1144.05 lm
107: 1173.87 lm
108: 1204.20 lm
109: 1235.05 lm
110: 1266.42 lm
111: 1298.32 lm
112: 1330.75 lm
113: 1363.71 lm
114: 1397.22 lm
115: 1431.27 lm
116: 1465.87 lm
117: 1501.02 lm
118: 1536.73 lm
119: 1573.00 lm
120: 1609.83 lm
121: 1647.24 lm
122: 1685.22 lm
123: 1723.78 lm
124: 1762.93 lm
125: 1802.66 lm
126: 1842.99 lm
127: 1883.91 lm
128: 1925.44 lm
129: 1967.57 lm
130: 2010.31 lm
131: 2053.66 lm
132: 2097.64 lm
133: 2142.23 lm
134: 2187.46 lm
135: 2233.32 lm
136: 2279.81 lm
137: 2326.94 lm
138: 2374.72 lm
139: 2423.15 lm
140: 2472.24 lm
141: 2521.98 lm
142: 2572.38 lm
143: 2623.45 lm
144: 2675.19 lm
145: 2727.61 lm
146: 2780.71 lm
147: 2834.50 lm
148: 2888.97 lm
149: 2944.14 lm
150: 3000.00 lm
hIKARInoob
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^^^ Aha! And the intervals are probably made to make it (quasi) visually linear I guess?

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Reyden wrote:
ToyKeeper wrote:
I have Indigo 5.2, dated 2013-12-17.

This version is free for non commercial use. Newer than M43 firmware version has been developed but it’s not wide spread and avaible only locally to support diy community.

… as you said there are many types of open source licences, this question should be discussed with the author. I’ll try to clarify this topic. What’s your goal, you wanna share drivers and do bussiness? At the moment we’re not allowed to do this.

I would love it if you could talk to the author. Smile

My goal is a healthy collaborative community with a solid foundation of open projects that anyone can use and build on. The idea is that a rising tide raises all ships. Instead of trying to make any individual ship taller, I hope to raise the tide for everyone.

It’s nice to have things which are free for non-commercial use, but it’s nicer to have things which are free for any use. If someone takes my code, modifies it, and sells it, I am not harmed. Especially with a “copyleft” license like the GPL, which requires people to give back their changes under the same license. Share and share alike. It may seem strange, but it has proven itself to be a very effective tactic in an information economy. Even traditional institutions like banks are catching on these days:

https://blogs.worldbank.org/opendata/leveraging-open-source-public-insti...

As someone in the study put it: Open-source makes sense because “You get what you pay for, everyone gets what you pay for, and you get what everyone pays for.”

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hIKARInoob wrote:
^^^ Aha! And the intervals are probably made to make it (quasi) visually linear I guess?

Not really.
The higher the output, the smaller the % increase per step up.

2Q19

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Jerommel wrote:
hIKARInoob wrote:
^^^ Aha! And the intervals are probably made to make it (quasi) visually linear I guess?
Not really. The higher the output, the smaller the % increase per step up.

Thanks. I just put the data in excel, and in single log it’s a declining line. Not sure if it’s supposed to be a straight line in single log to be visually linear; I have to look that up.

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Jerommel wrote:
hIKARInoob wrote:
^^^ Aha! And the intervals are probably made to make it (quasi) visually linear I guess?

Not really.
The higher the output, the smaller the % increase per step up.

There are a few different theories about what makes the best “visually linear” brightness curve. The one I showed was a cube-root method, as recommended by CPF’s “selfbuilt”.

However, if you don’t like the cube-root curve, the firmware repository has a ramp calculator to generate other curves. It includes square root, cube root, fifth root, natural log, and base-two log… or it’s pretty easy to add others by changing only two lines of code.

I expect it will probably be reasonably easy to reflash the D4; just take out the driver and use a SOIC8 clip with avrdude on the MCU. So you should be able to change the ramp shape or change the interface entirely, if desired.

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^^^ Great, thanks! Interesting… I don’t find myself reflashing firmware… or tinkering with drivers… Who knows in a couple of years…

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ToyKeeper wrote:
hIKARInoob wrote:
Ok, so how it work? There is ramping from min output to max output, and then there is the FET turbo. So do we know approximately how low low is? And there is a gap between max and FET turbo right? So how bright is max?

I don’t have a D4 to measure yet, but as far as I can tell it will likely go from about 1 lumen (maybe lower?) up to about 3000 lumens (ish, depends on emitter type and battery type). My light box maxes out at about 3000 lumens, and I would not be surprised if the D4 exceeds that. If it does, I’ll measure it in some other way.

There is no gap in the ramp. It is a smooth slope all the way from 1 lm to ~3000 lm, with 150 steps between.

This is only an estimate, based on my Q8 prototype which should be very similar, but I expect the 150 output levels will be very similar to this:


Same mistake again. You are not able to give lumens because you never know actual conditions that influence on output.
Of course smooth ramping is very usefull for flashlight which cant work longer than 30sec from start Big Smile .
And no steps is great achievent when any level will loose several % of output every minute Facepalm .
Just imagine that youve bought car, and seller claimed that it can go 100mph. But after some time you realize that this can be only reached with 95-100% tank load, with 50% tank load it cant go faster than 70mph. And there is no document which will show this feature, no method to calculate actual values.
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kiriba-ru wrote:

Just imagine that youve bought car, and seller claimed that it can go 100mph. But after some time you realize that this can be only reached with 95-100% tank load, with 50% tank load it cant go faster than 70mph. And there is no document which will show this feature, no method to calculate actual values.

In this analogy (it is always cars..) it is easy to see where you and some others differ from reality: you demand another safe and road-legal car (another Zebralight) while Hank now offers a drag racer (D4).

It is just different people who buys the two types, no reason to argue. It is Hank who made this choice, I’m sure also for commercial reasons, but I can just imagine that as many others he is attracted to small wow-lights as well Big Smile

I’m really looking forward to the D4 Smile

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djozz wrote:

It is just different people who buys the two types, no reason to argue. It is Hank who made this choice, I’m sure also for commercial reasons, but I can just imagine that as many others he is attracted to small wow-lights as well Big Smile


Im not with them Wink . Im just trying to prevent some problems caused by claiming values that are not always repietable.
Drag racer dont need 18650 cell. Just imagine how many times you can turn it on (100%), wait until you cant hold it and then turn it off. New aspire 18350 capacity is more than enough for such using.
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kiriba-ru wrote:
djozz wrote:

It is just different people who buys the two types, no reason to argue. It is Hank who made this choice, I’m sure also for commercial reasons, but I can just imagine that as many others he is attracted to small wow-lights as well Big Smile


Im not with them Wink . Im just trying to prevent some problems caused by claiming values that are not always repietable.
Drag racer dont need 18650 cell. Just imagine how many times you can turn it on (100%), wait until you cant hold it and then turn it off. New aspire 18350 capacity is more than enough for such using.

And that’s why some of us are getting 18350 tube too Smile
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kiriba-ru wrote:
ToyKeeper wrote:
This is only an estimate…

Same mistake again. You are not able to give lumens because you never know actual conditions that influence on output.

As stated, it’s an estimate. The actual output is complicated, but the estimate gives people a rough idea of what to expect.

kiriba-ru wrote:
Of course smooth ramping is very usefull for flashlight which cant work longer than 30sec from start Big Smile .

You might have a point if the light only had “off” and “direct drive 100%” modes. Fortunately, there are 149 other levels in-between to cover a wide variety of situations. Unfortunately, exaggeration and polarization are almost never helpful, so I hope that can stop.

kiriba-ru wrote:
And no steps is great achievent when any level will loose several % of output every minute Facepalm .

Levels 1 to ~64 are current-regulated with long runtimes, and are quite useful on a small light. Above that, the levels are partially regulated and partially direct-drive. The runtime graphs should look similar to the BLF A6, where high modes sagged over time, medium modes sagged but only a little, and the entire bottom half of the modes were very close to flat.

This method gives low and medium modes which are pretty stable and practical, while also giving good “wow” modes. So it can be practical or fun depending on what you want at the time. Is it a problem to have some fun modes?

Reviewers didn’t generally measure the lower half of the modes, because the runtime was too long, but the graphs for those are mostly just a flat horizontal line.

On a FET+N+1 driver, the regulated portion goes much higher, like 3A instead of 0.35A. So it can be regulated up to about 1000 lumens instead of just ~150. This doesn’t matter much to me because I normally use less than 150 lumens, but it’s nice to have sometimes.

kiriba-ru wrote:
Just imagine that youve bought car, and seller claimed that it can go 100mph. But after some time you realize that this can be only reached with 95-100% tank load, with 50% tank load it cant go faster than 70mph. And there is no document which will show this feature, no method to calculate actual values.

You mean, like how the M43 can run at 100% without losing any output over time? Let’s find a runtime graph… (red line)

Maybe car analogies aren’t very relevant here.

The M43 does a pretty good job with power and thermal regulation (though the thermal regulation is a bit bumpy). However, virtually every flashlight sags quite a bit when running at 100%. And that’s okay. Some manage to get a flat graph on medium modes, which is nice. Others still sag a bit over time, which is not as good but usually not noticeable by eye. And both the M43 and D4 have regulation on low modes.

They are both good lights. I don’t understand why a few vocal people are upset about the D4. I expect I’ll enjoy mine quite a bit. Smile

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I love those Aspire cells, it made all my 18350 lights worthwhile, it is my perfect size flashlight but the battery capacity always made me have mixed feelings about them.

That said, I think I will probably mostly use 18650 cells in the D4 because my current 18350 EDC is about the perfect version of the 18350 format, a Jaxman E2L shorty (bistro driver with R9080 Nichia’s), for me the D4 will not beat that one, but with 18650 battery, from the lights that I have, it will probably be the best in its class.

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Runtimes couldnt be similar to blf A6 cause bigger current with same cell size.
Im not against fet, but small edc should have one regulated mode that gives such output that host can dispread in air. In this case, fet+4 amc with one separated amc could be great achivement in comparing with A6 driver. Right now (three years after) we cant see big difference in fet drivers.
Im dont have m43, but I think it is able to give near 100% output with 50% charged cells. Graph that you posted shows thermal regulation.

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Can anyone confirm if the Emisar D4 will be sold on intl-outdoor? Or will it be sold exclusively to ME?
Hank not reply my question, from US the price of shipping is prohibitive for Europe.

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