Pre production sample [Review] Astrolux MF-01 4x18650 flashlight supplied by Banggood

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Lexel
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This is a prototype with Nichia 219, so who knows if they drive the XPG3 with a little less current or this is not the final driver

it is possible the light does more than 12k with XPG3, this Nichia one is really bright

Its likely they do not use highest flux bin to keep the costs low

and the TIR plus AR glasss will have like 15% loss
so your 5100 lumens need 36W @80°C Tj

driver efficiency 85%
42.4W

S3 flux bin
47.85W

AEDe
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Price differense CW S5/ CW S3 is very small. They can not much reduce cost this way.
So looking forward test in sphere. Maybe they change UI meanwhile.

WTF
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I’m thinking about using this for wintertime mountain biking, the Nichia’s should look nice in snow. It might even work as a hand warmer. With four cells it should be able to run for a couple hours at a high enough level to keep the batteries warm. Do you think the light will handle the vibration or will parts of the battery carrier or driver start shaking loose?

Biking on snow is usually pretty slow but I might need more throw. How are the Nichia’s for dedoming?

The mode spacing could be better, probably want 1400 to 2200 lumens depending on beam width and reflective glare from the snow. How do buck drivers respond to doubling the resistance of the sense resistor? Is it a linear change, mode spacing get wacky or does the driver just quit working?

mizou51
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do you have any output lumens VS time chart ?
I can’t see the picture of the post.

Lexel
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Hi,

I cant measure the real output, but I estimate about 10000 lumens

The light steps down after 2 minutes when cold, when really hot its about 1 minute.

But when the light steps down first time from being cold its on the edge to be held comfortably on the tube and way too hot to touch the head,
you would not do another turbo unless wearing gloves.

I tested the light in ice water and it seems it the timed stepdown is always there just shorter when the light is hot.

Tom E
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So if I understand this right, the cells are 2S2P and the LED's are 3 groups of 2S3P. Therefore, you can run the 3 groups in parallel and have a fully 2S LED setup with 2S cells, therefore a FET based driver can be used. I think that's right??

Lexel
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Tom E wrote:

So if I understand this right, the cells are 2S2P and the LED’s are 3 groups of 2S3P. Therefore, you can run the 3 groups in parallel and have a fully 2S LED setup with 2S cells, therefore a FET based driver can be used. I think that’s right??

yeah you can run it DD, but it gets hot quick as it is now

with DD you may get like 25A

Tom E
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Yea, awesome. Just wonder if the std SRK size boards will fit. Might not have clearance for piggybacking in there? From your pics, looks pretty tight. Not sure if a SRK style driver would fit or be compatible as-is.

SubSailorVet
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Beam shots are awesome! That thing is a search light. I’ll definitely be getting one!

Best regards,

Matthew

 

 

 

 

 

fuzun
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I don’t know if they are comparable but would you describe this as Q8 killer?

Tom E
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fuzun wrote:
I don't know if they are comparable but would you describe this as Q8 killer?

For $20 it would be a Q8 killer smile.  I wouldn't bury the Q8... yet. Without knowing lumens, throw and how the UI works, hard to compare. Only 4 output levels compared to smooth ramping plus multi mode sets, etc... I can also still pocket a Q8 but with the wide head on this, I don't think I could.

Plus the Q8 is a fully open source design.

Lexel
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Tom E wrote:

fuzun wrote:
I don’t know if they are comparable but would you describe this as Q8 killer?

For $20 it would be a Q8 killer smile.  I wouldn’t bury the Q8… yet. Without knowing lumens, throw and how the UI works, hard to compare. Only 4 output levels compared to smooth ramping plus multi mode sets, etc… I can also still pocket a Q8 but with the wide head on this, I don’t think I could.


Plus the Q8 is a fully open source design.

Hi

I measured the driver with 47.5mm like the Q8 one

give me some time and I make one for you

Lexel
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Order from OSH Park

Theodore41
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How many cd it has?

freeme
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©freemex1thedeals.com

Lexel
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freeme wrote:
This a modified version for MF-01?

Lexel wrote:

Order from OSH Park


yes I took the measurements in my sample and modify a SRK layout to fit
I did some minor adjustments after you quoted it

joechina
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So how much do you ask for a working driver with NarsilM Smile

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Tom E wrote:

Plus the Q8 is a fully open source design.


If it so, I would like to have its drawing/3d model.
Lexel
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joechina wrote:
So how much do you ask for a working driver with NarsilM Smile

depends how many want one
Oshpark sells always multiples of 3 boards
so if only one would want one thats 17.55$ for 3 boards

Prices:

17-22mm

Narsil v1.4
13.5$ Attiny85 with temperature calibration
14$ temperature calibrated, 1S LVP calibrated to any value you want

NarsilM Attiny85
12.5$ flashed no settings,
13.5$ with temp calibration and max temperature preset,
14$ with calibrated 1S or 2S LVP / temp calibration and max temperature preset, this version has no indicator LED

loose spring adds 0.3$

47.6mm add 5$ if 3 boards come together

LDO 1.2$ 21mm and bigger only

Bistro or Narsil customized modespacing adds 1-2$ depending how many groups you want changed
or you suply a hex add 0.5$

SRK Size with more than 8 AMC7135 Bank add 1$ for all 16 AMCs

so NarsilM without calibration
12.5$
LDO 1.2$
copper alloy spring 0.3$
5$ for bigger board if 3 drivers gets ordered
2$ shipping
1$ 16 AMCs

so minimum price is 22$

Tom E
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Dang, that was quick!! Wow, thanks Lexel!! Now we're cooking...

Tom E
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Dang, that was quick!! Wow, thanks Lexel!! Now we're cooking...

WTF
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Great work, this light is getting better really fast.

How many lumens do you think the light will put out on the 7135’s?

What were the 12v cc chips you mentioned in the other thread?

What would it take to modify this board to use them?

Silent_Star
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Good flashlight, but… you know, after this story with S42’s short tube and ugly USB cover too hard to trust them…
When I think about thear QC, I am understand that this QC – is only checking if it’s posible to turn on a flashlight.
So, thank you, Asrolux, but NO, until full reviews and specs.

 Genesis 1:3 "And God said, "Let there be light,"  and there was light."

strayz
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very interesting…..

steel_1024
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Interested in buying PCB

Are you willing to list part capacitance and resistance values?

Sorry for my poor english.

Lexel
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steel_1024 wrote:
Interested in buying PCB

Are you willing to list part capacitance and resistance values?

The parts are the same as for all TA 2S drivers

http://budgetlightforum.com/node/48447

MCU Attiny85 for Narsil

Use 1% resistors all around
R1 : 19.1 k (220 k for e-switch lights, 360k for 2S setups like the L6 driver)
R2 : 4.7 k (47 k for e-switch lights)
R3 : 100 k
R4 : 47 ohm
R5 : 4.7 ohm

R6 : 0 ohm jumper, or can use a solder blob (LDO drivers only)
R7 : 0 ohm jumper, or can use a solder blob (LDO drivers only)

BR : Bleeder resistor for lighted tailcaps, varies between 470-630ohm (optional)

C1 : 10 uF (be sure it is rated for the voltage you plan to use, so for a 4S setup, it needs to be 20v or more)
C2 : 0.1 uF (10uf for LDO drivers, can use the same one as the C1)
OTC : 1 uF (functions as e-switch pads for e-switch lights)

U1 : SOIC-8 footprint Attiny25 for bistro, the 20mm+ versions have pads for the Attiny85, the 25 & 45 also fit on them
U2 : LFPAK56 MOSFET (aka, “FET”). PSMN3R0-30YLDX is a popular cheap option, the SIR800DP is better but costs more.

D1 : Schottky Diode SOD-323 (if using a zener and 2S cells then you will need a 200 ohm resistor here instead)

Z: Zener diode (link is external) SOD-323 (Optional, only needed for 2S+ operation)

LDO : Designed around the MIC5235-5.0YM5 LDO voltage regulator

7135 : Standard 350ma or 380ma 7135’s can be installed on these pads. I prefer 350ma myself. You will need to clip the center pin of the top side 7135 if you plan to use a bleeder resistor. The 7135’s can be purchased from RMM or FastTech

http://www.digikey.com/short/3bvvz2

steel_1024
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Many thanks, Lexel

Sorry for my poor english.

hIKARInoob
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This light is also sold as Mateminco MT18. Check out for pictures and additional data. Either the run time data is completely off, or there is going to be a huge thermal step down (although temp is set at 60 C) accompanied with aggressive reduction in output for the fairly high run time of 4 and 3.5 hours for the highest two outputs. Price is $55, but not sure how to interpret Taobao prices.

https://world.taobao.com/item/556346782412.htm?fromSite=main&spm=a21m2.8...

Edit:

Based on the run time data, I see a possibility that the light steps down aggressively when reaching 60 C to the 1100 lumen mode (for the Nichia version), and stays there until batteries are depleted. So there is no feedback control for output as a function of temperature.
If so it’s a bit unfortunate that there is no 2500~3000 lumen mode where the light can sustain output fairly continuously.

rizky_p
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Good catch and it sell for $54.87 too Party

hIKARInoob wrote:
This light is also sold as Mateminco MT18. Check out for pictures and additional data. Either the run time data is completely off, or there is going to be a huge thermal step down (although temp is set at 60 C) accompanied with aggressive reduction in output for the fairly high run time of 4 and 3.5 hours for the highest two outputs. Price is $55, but not sure how to interpret Taobao prices.

https://world.taobao.com/item/556346782412.htm?fromSite=main&spm=a21m2.8...

Newlumen
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Can we swap the led with xpl hi v3 ??

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