CLOSED! Group Buy: Starry Light SA-22 BLF Edition (NW emitter, better modes, faster PWM, BLF logo)

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Bort
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What is the lumen sag on high, startup to 30 secs to 5 and 10 minutes?

Also like others said runtime and how low will cells get discharged

Edit:
Thats also a lower high then i expected, whats the current draw for the modes?

Also what type of driver is it, linear or buck?

The Journal of Alternative Facts

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Streamer
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brad wrote:
TexasToasted wrote:
_the_ wrote:
it doesn't have mode memory yet (= forgets in 2-3s, always starts on low)
I would love to have one that always starts in low.
Same here. I might go for two.

I for one would not want one if it ALWAYS started in low.

When memory gets added in the final production, you will have to remember to switch it to low mode for it to come on in low.

Best of both worlds.  At least I hope that's the way it's gonna be.

 

ezarc
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Same as above, always starting in low would be a pain if you always use it on high/med or need to illuminate something quickly (firefighter/security/police) without fiddling around with the modes.

If low is your most preferred mode then just leave it on low and it will stay on low.

Bort
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ezarc wrote:
Same as above, always starting in low would be a pain if you always use it on high/med or need to illuminate something quickly (firefighter/security/police) without fiddling around with the modes.

If low is your most preferred mode then just leave it on low and it will stay on low.


I prefer starting on low every time, then i don’t have to remember what mode i let if on and get blasted by too many lumens in a small space later. However i can see your point of certain occupations or circumstances where mode memory would be a good thing.

The Journal of Alternative Facts

"It is critical that there is a credible academic source for the growing and important discipline of Alternative Facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists."

 

ezarc
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Not saying starting in high is good either (or mid) but mode memory is a compromise of all of them.

For a small EDC starting always on low would be OK, I like it on my AAA and AA DQG lights.

zelee
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the sample is still test type isn’t?i hope there is a solution for fixing this amnesiac driver :~

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As the others have asked, the highest output only has 592 OTF lumens?

Always starts on low… is it “moonlight (0.4lm)” or “low (4lm)” to be exact?

Thanks and it’s getting more interesting!

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If Ive read this correctly, and Im not rereading the thread so if I missed it, my apologies.
The TEST sample has no memory. But the one being discussed for the GB should have memory. It is one of the options requested by _ the _.

From the OP

“…- 4 modes, LL-L-M-H (0.2%, 2%, 25%, 100%), with memory, no blinky modes!”

As I understand that, the lowest mode is moonlight or similar being .2%. And if high is 500lumens, then LL @. 2% (low low) is 1 lumen. (500*.2/100)

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So how’s the group buy looking at this stage?
I would like 1, thanks.

Hi, my name is Anton, and I’m addicted to flashlights.

_the_
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Some answers to questions above..

1. OTF lumens

I think the drive current is a good compromise as is. 592 lm OTF is not bad at all, see the following comparison table:

The drive current could be made higher, but I wouldn't dare to give out that kind of light to a non-flashaholic.. It would simply become way too hot when left unattended.

 

2. Mode memory

The GB lights will have a good memory, which engages after being off about 2s (not more!).

 

3. Runtime, heat, heat sag..

I'm planning to perform the runtime tests this evening. Please wait.. Smile

Preliminary result is that the head of the light gets quite hot after being on for about 10min. Body tube / cells don't get hot at all.

=the=

 

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Thanks for update, the, good job ;)!

Chicken Drumstick
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brad wrote:
TexasToasted wrote:
the wrote:
it doesn’t have mode memory yet (= forgets in 2-3s, always starts on low)

I would love to have one that always starts in low.

Same here. I might go for two.


With memory if you leave it in low. Then it’ll turn on in low. Problem solved. If you are not leaving it low, then the reality is you probably don’t use low as much as you think.

And at the end of day if low really is the most important and used mode. Then picking a 4AA light is overkill and you’d be better served with a 1AA or 1AAA light.

bibihang
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the wrote:
The GB lights will have a good memory, which engages after being off about 2s (not more!).

Sorry but I don’t quite understand about this sentence. Do you mean that it actually behaves like the Nanjg driver, i.e. when switching it into high mode and stay in high mode for more than 2s it will memorize the high mode?
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If you have a mode selected eg low with the light on. Turn it off and back on again quickly it will go to the next mode. If you turn it off and count one two and turn it on again it will be in the mode you left it in, rather than advancing to the next mode.

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Chicken Drumstick wrote:
If you have a mode selected eg low with the light on. Turn it off and back on again quickly it will go to the next mode. If you turn it off and count one two and turn it on again it will be in the mode you left it in, rather than advancing to the next mode.

I like this implementation of mode memory. Thanks for explaining it to us.
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Looking good so far, the issues i was really worried about the threads and the issue with the batteries and the head. the mode memory sounds fine to me.

_the_
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Runtime test at 45min mark. Ambient temperature 25°C, no cooling, head temperature 87°C.

Would you like to have any higher current? Wink

=the=

 

Streamer
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_the_ wrote:

Would you like to have any higher current? Wink

 

87 degrees C = 188.6 FSurprised     yeh, kick it up + 24 degrees F so I can boil a cup of water for my Tea....Laughing

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Chicken Drumstick wrote:
brad wrote:
TexasToasted wrote:
_the_ wrote:
it doesn't have mode memory yet (= forgets in 2-3s, always starts on low)
I would love to have one that always starts in low.
Same here. I might go for two.
With memory if you leave it in low. Then it'll turn on in low. Problem solved. If you are not leaving it low, then the reality is you probably don't use low as much as you think. And at the end of day if low really is the most important and used mode. Then picking a 4AA light is overkill and you'd be better served with a 1AA or 1AAA light.

Th problem is, if your using moonlight to low and back, having to cycle through the high modes. It's not about not leaving it in low, it's that it's sometimes inconvenient being forced into high, even briefly. If you have a tactical use that makes it important to always start on high, maybe you'd be better served by a single mode light.

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the wrote:

Runtime test at 45min mark. Ambient temperature 25°C, no cooling, head temperature 87°C.

Would you like to have any higher current? Wink

YES

Would you mind keeping the wrong flashlight?
Best wish, May
Tmart service team

 

Soumil wrote:

PLEASE HELP ME GEARBEsT! IM LITERALLY CRYING!

 

_the_
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The light is well regulated, but the head heats up pretty much, causing some thermal sag when run indoors without any cooling (not in hand, no moving air). Ambient temperature was 25°C and the maximum measured temperature of the head was 90°C (at 59min, when the light ran out of regulation). That's pretty hot, but then again, not too hot for electronics, and the body tube and cells were in comfortable less than 50°C temperature, which is perfectly ok for NiMH cells.

Conclusion: This light is driven at suitable level, being bright enough, but still safe for careless non-flashaholic users. Smile

Note: The graph ends at 2h mark, but the light is still running with about 0.5 lumen light. Currently 4h and counting..

=the=

 

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Wonderin' how she would do on lithium primarys....Undecided

Chicken Drumstick
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Gj wrote:

Chicken Drumstick wrote:
brad wrote:
TexasToasted wrote:
the wrote:
it doesn’t have mode memory yet (= forgets in 2-3s, always starts on low)
I would love to have one that always starts in low.
Same here. I might go for two.
With memory if you leave it in low. Then it’ll turn on in low. Problem solved. If you are not leaving it low, then the reality is you probably don’t use low as much as you think. And at the end of day if low really is the most important and used mode. Then picking a 4AA light is overkill and you’d be better served with a 1AA or 1AAA light.

Th problem is, if your using moonlight to low and back, having to cycle through the high modes. It’s not about not leaving it in low, it’s that it’s sometimes inconvenient being forced into high, even briefly. If you have a tactical use that makes it important to always start on high, maybe you’d be better served by a single mode light.


But this problem will exist with any light with more than two modes. Regardless what it starts on or if it has memory or not.

And again. If you only use moonlight and low, then a 600 lumen 4AA light is simply the wrong tool for the job.

bibihang
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Chicken Drumstick wrote:
If you have a mode selected eg low with the light on. Turn it off and back on again quickly it will go to the next mode. If you turn it off and count one two and turn it on again it will be in the mode you left it in, rather than advancing to the next mode.

Yeah this is exactly what I could imagine. So the mode memory behaves like my other Qlite drivers. Thanks.
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bibihang wrote:
Chicken Drumstick wrote:
If you have a mode selected eg low with the light on. Turn it off and back on again quickly it will go to the next mode. If you turn it off and count one two and turn it on again it will be in the mode you left it in, rather than advancing to the next mode.

Yeah this is exactly what I could imagine. So the mode memory behaves like my other Qlite drivers. Thanks.

I believe you are confusing the “off time memory” Chicken Drumstick described with the “on time memory” used by qlite and other 105c-style drivers.

“on time memory” memorizes the mode based on how long the light has been on (for example on >2 seconds), “off time memory” memorizes the mode based on the amount of time the light has been off (for example off >2 seconds).

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

Bort
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What are the drive currents at the various levels?
Does it have a buck driver or a linear driver?

The Journal of Alternative Facts

"It is critical that there is a credible academic source for the growing and important discipline of Alternative Facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists."

 

bibihang
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wight wrote:
“on time memory” memorizes the mode based on how long the light has been on (for example on >2 seconds), “off time memory” memorizes the mode based on the amount of time the light has been off (for example off >2 seconds).

So this Starry light is having the “off time memory” while the Qlite are having “on time memory”? Do I understand correctly this time?

Most of the time I deal with Nanjg drivers and I think I never have lights that perform the “off time meory”, or I was not aware of.

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Chicken Drumstick wrote:
Gj wrote:

Chicken Drumstick wrote:
brad wrote:
TexasToasted wrote:
_the_ wrote:
it doesn't have mode memory yet (= forgets in 2-3s, always starts on low)
I would love to have one that always starts in low.
Same here. I might go for two.
With memory if you leave it in low. Then it'll turn on in low. Problem solved. If you are not leaving it low, then the reality is you probably don't use low as much as you think. And at the end of day if low really is the most important and used mode. Then picking a 4AA light is overkill and you'd be better served with a 1AA or 1AAA light.

Th problem is, if your using moonlight to low and back, having to cycle through the high modes. It's not about not leaving it in low, it's that it's sometimes inconvenient being forced into high, even briefly. If you have a tactical use that makes it important to always start on high, maybe you'd be better served by a single mode light.

But this problem will exist with any light with more than two modes. Regardless what it starts on or if it has memory or not. And again. If you only use moonlight and low, then a 600 lumen 4AA light is simply the wrong tool for the job.

Wrong (IMO). Without memory, you can go from low to moonlight by turning off for a couple of seconds, then starting in moonlight without going through medium and high. If you use high and are annoyed by having to spend a second or two on lower modes, then a light offering moonlight and low is simply the wrong tool for the job.

Bort
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Can the LED be upgraded to sinkpad/noctigon and what diameter is the driver, i am curious if it can be replaced

The Journal of Alternative Facts

"It is critical that there is a credible academic source for the growing and important discipline of Alternative Facts. This field of study will just keep winning, and we knew that all the best people would want to be on board. There is a real risk in the world today that people might be getting their information about science from actual scientists."

 

wight
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bibihang wrote:
So this Starry light is having the "off time memory" while the Qlite are having "on time memory"? Do I understand correctly this time?

Most of the time I deal with Nanjg drivers and I think I never have lights that perform the "off time meory", or I was not aware of.

Yes, you understand correctly.  "off time memory" is what was described by _the_ and Chicken Drumstick.  In the other thread nobody discussed which type of memory the stock light has beyond the fact that it works properly.  In this thread we have yet to see a 100% complete prototype of the BLF GB light, so I can't tell you for certain what this light will have yet!  "off time memory" is considered the more desirable of the two.  I believe that outside of Nanjg drivers "on time memory" is rare.  

Gj wrote:
Wrong (IMO). Without memory, you can go from low to moonlight by turning off for a couple of seconds, then starting in moonlight without going through medium and high. If you use high and are annoyed by having to spend a second or two on lower modes, then a light offering moonlight and low is simply the wrong tool for the job.
Personally while I see merit in having both low and moonlight, I'd primarily use a light like this on full blast.  If it were to have no memory, I would prefer to start in high because:
  1. I mostly use it on high.
  2. It's easier to showboat that way.
  3. If it ever seems practical to defend myself by shining the light in someone's eyes, it better be on high for that first click! Wink
  4. I can easily preserve my night vision by covering the lens and switching modes a few times to moonlight. 

I think the memory/no-memory/mode-order discussion has been walked through several times on BLF and elsewhere.  There's really no cure-all for the issues that are brought up _the_ picked a configuration, some people will purchase it and some will not.  

Bort wrote:
Can the LED be upgraded to sinkpad/noctigon and what diameter is the driver, i am curious if it can be replaced
Bort, _the_ pointed out that the special battery contacts are on the bottom of the driver PCB, a swap with an existing driver would not be practical.  Of course a custom driver could be made.  Fair question as to how the LED is mounted!

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

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