【convoy】M21G XHP70.3 HI 2*21700 flashlight available

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Coyote2710
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hello, best driver for osram 1mm red (CSLNM1.23) around 1.5-2A using single 18650? continuous use on C8+.

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polarweis wrote:
z1 has 6 amp output on highest mode. will it be safe to use flat white 1mm2 or will it turn blue? and anyone know the mcpcb size?

So it uses one of these ∅22mm newer gen SST40 linear drivers, with 10mΩ sense resistor:

 

 

Sense resistor size seems to be 2010 imperial. For an Osram Ostar Projection Compact KW CSLNM1.TG, you could swap the R010 with two R025 sense resistors in parallel. This would set the driver at 4.8A theoretical, probably driving the emitter at slightly less effective current (4.5+A), which is a nice figure in practice.

 

Coyote2710 wrote:
hello, best driver for osram 1mm red (CSLNM1.23) around 1.5-2A using single 18650? continuous use on C8+.

Simon has this suitable ∅17mm 1.5A buck driver in his store; this other would also work (despite being marketed for AA / 14500s, it has the right size).

If you need more power you need to look elsewhere, this or that 2.2A buck drivers for example.

Now that I'm here let me suggest Simon he could list a few CDM brand drivers, namely to cover deficiencies.

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Coyote2710
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Barkuti wrote:

polarweis wrote:
z1 has 6 amp output on highest mode. will it be safe to use flat white 1mm2 or will it turn blue? and anyone know the mcpcb size?

So it uses one of these ∅22mm newer gen SST40 linear drivers, with 10mΩ sense resistor:


 



 


Sense resistor size seems to be 2010 imperial. For an Osram Ostar Projection Compact KW CSLNM1.TG, you could swap the R010 with two R025 sense resistors in parallel. This would set the driver at 4.8A theoretical, probably driving the emitter at slightly less effective current (4.5+A), which is a nice figure in practice.


 


Coyote2710 wrote:
hello, best driver for osram 1mm red (CSLNM1.23) around 1.5-2A using single 18650? continuous use on C8+.

Simon has this suitable ∅17mm 1.5A buck driver in his store; this other would also work (despite being marketed for AA / 14500s, it has the right size).


If you need more power you need to look elsewhere, this or that 2.2A buck drivers for example.


Now that I’m here let me suggest Simon he could list a few CDM brand drivers, namely to cover deficiencies.


hi barkuti, simon says that his 17mm 1.5A isn´t suitable for red led. Due to the red led 2.4V vs the white led 3.0V. With a red led, that driver would transform the voltage difference into heat? Is it reliable for long periods of use on a C8+?

Barkuti
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Coyote2710 wrote:

hi barkuti, simon says that his 17mm 1.5A isn´t suitable for red led. Due to the red led 2.4V vs the white led 3.0V. With a red led, that driver would transform the voltage difference into heat? Is it reliable for long periods of use on a C8+?

Mmmph, that sounds strange to me. The driver clearly is a buck driver:

 

 

It has an inductor and a sense resistor onboard. Besides, valid input voltage is listed as 3 - 8.4 V.

In my experience, a buck driver can usually work fine outputting lower voltages. I once modified a buck driver from Sofirn to output a lower current and drive a red XP-E2 led with it. And it worked. But of course, I haven't tested the above single mode driver.

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Chatika vas Paus
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@Barkuti
The sense resistor seems to be the main reference for output current control. This 22mm driver has a resistor R010 and is limited to 6A, but 17mm has the same resistor and is limited to 5A. Is there anything else to regulate the output current?

kiriba-ru S2+ and S21a spacers are available in EU. PM me. A few details here

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Chatika vas Paus wrote:
… Is there anything else to regulate the output current?

By Ohm's Law V = I × R, if you calculate it for both driver types you'll get 60mV sense voltage for the bigger diameter ones (∅22 and ∅20mm) and 50mV for the ∅17mm one.

The sense voltage must be set somewhere in the firmware I bet. The actual intricacies of that I don't know.

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Simon Mao
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sochi111 wrote:
Simon Mao wrote:

I will produce some holsters suitable for L21A in small quantities

Very kind of you.You are the king Cool

I am working on a thread about the new throwers here
Let me know anything to change
By the way does the C8 holster fit M21A flashlight, or a little too short?
M21A has the same head as C8+ right?

it should fit ,too
the head is almost the same ,but the thead for middle aluminum tube is different ,and 20mm driver in M21A but 17mm driver in C8+

Simon Mao
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Coyote2710 wrote:
hello, best driver for osram 1mm red (CSLNM1.23) around 1.5-2A using single 18650? continuous use on C8+.

i’m making a driver sample for red LED
30%-100% two modes

polarweis
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Does the 6amp driver really gives 6amp to the led? or are there loses somewhere? (this might be a stupid question);)

"It wouldn’t be so bright if there wasn’t a shadow every once in a while." - Jason Mraz

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polarweis wrote:
Does the 6amp driver really gives 6amp to the led? or are there loses somewhere? (this might be a stupid question);)

yes, indeed 6A

Barkuti
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polarweis wrote:
Does the 6amp driver really gives 6amp to the led? or are there loses somewhere? (this might be a stupid question);)

Being a linear driver, it will deliver up to 6A. To deliver 6A there must be a minimum voltage difference between input -cell voltage- and output -emitter- because current flow times resistance (the very battery cell, springs, switch, cables and contacts, etc.) causes a voltage drop. So, once battery voltage drops below a certain point, i.e. once it gets close enough to the Vf of the emitter, the driving current will start to drop below 6A, reducing progressively down from there as it happens with “MOSFET direct drive” drivers.

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

caramba
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Anyone got the new M21C-U with side switch? I would love to see how the new ramping works.

Simon Mao
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caramba wrote:
Anyone got the new M21C-U with side switch? I would love to see how the new ramping works.

At present, Chinese buyers mainly feedback two opinions. One is that the reaction speed is not as fast as Anduril, and the other is that the ramping time is a bit long.

Nicolicous
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caramba wrote:
Anyone got the new M21C-U with side switch? I would love to see how the new ramping works.
got mine today.

The ramping UI is almost like sofirn sp70. I suspect Sofirn made the driver/firmware?

Built is robust and feels good in hand. This light definitely win win over EC03 (horrible tint and biggest regret)

I like this light alot Simon. Good work and please make drivers with same UI for M3 Smile

Clip from youtube (not mine)

Nico -.-

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Nicolicous wrote:
caramba wrote:
Anyone got the new M21C-U with side switch? I would love to see how the new ramping works.
got mine today.

The ramping UI is almost like sofirn sp70. I suspect Sofirn made the driver/firmware?

Built is robust and feels good in hand. This light definitely win win over EC03 (horrible tint and biggest regret)

I like this light alot Simon. Good work and please make drivers with same UI for M3 Smile

Clip from youtube (not mine)

This driver is similar in function to anduril, but the code is rewritten, which is more conducive to compatibility with components.
The charging version of M3 will be launched soon, it applies this ramping program.

Geuzzz
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Has anyone measured throw (kcd’s) of the M21C-U with xhp-70.2?

polarweis
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did anyone do the w1 or w2 mod in the convoy z1?

"It wouldn’t be so bright if there wasn’t a shadow every once in a while." - Jason Mraz

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polarweis wrote:
did anyone do the w1 or w2 mod in the convoy z1?

Yup! Check the previous page; Nicolicous put a Flat White (W1) in a Z1.
polarweis
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Did anyone did measument? will i get more candella then with c8+ w1?

"It wouldn’t be so bright if there wasn’t a shadow every once in a while." - Jason Mraz

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polarweis wrote:
Did anyone did measument? will i get more candella then with c8+ w1?

It probably will beat it if you focus it 100% but I dont think anyone has done more extensive mod yet.

RelakS
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That new T2 has finally arrived. Goodbye visible PWM Love The previous version was simply horrible in this regard.

caramba
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Nicolicous wrote:
caramba wrote:
Anyone got the new M21C-U with side switch? I would love to see how the new ramping works.
got mine today.

The ramping UI is almost like sofirn sp70. I suspect Sofirn made the driver/firmware?

Built is robust and feels good in hand. This light definitely win win over EC03 (horrible tint and biggest regret)

I like this light alot Simon. Good work and please make drivers with same UI for M3 Smile

Clip from youtube (not mine)

Great , thanks for the video. My vietnamese is “rusty”. How do you personally like the Ramping.?

Geuzzz wrote:
Has anyone measured throw (kcd’s) of the M21C-U with xhp-70.2?

I think Simon commented that he doesn’t recommend it for throw. Maybe that’s why no measurements,
I assume everyone is getting a Smooth Reflector.
I read in a M21C review thread, that orange peel in combination with XHP702 makes the beam look “nicer”?

I also wonder how Simon’s new Osram White flats would perform in a M21C-U with the 6000mA driver.

Nicolicous
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caramba wrote:
How do you personally like the Ramping.?

The ramping is smooth from 0 to 100% with one blink when reach high same with low.

In comparing with Anduril firmware , ramping from 0% to 50% is similar speed. From 50% to 100% it’s just a touch slower than Anduril.

M21C-U can access Moon mode from off by long press and double click for turbo or single click for off. Andruil is slightly better as you can access moon mode from off and can continue ramping if desire.

M21C-U firmware is very similar to sofirn sp70. I have not seen the code but the user interface is almost like sofirn sp70

In terms of throw it’s similar to Convoy L2 or L6 with smooth reflector. The led in perfectly center and simon has done great job.

Overall I really like this light way better than EC03 in terms of build, tint selection and thermal distribution. The other thing i like about this light is that it run on single battery using boost circuit to power XHP70 with ramping UI. I dont think there is a light on the market have ramping UI like this yet.

I will post some beam shoot this weekend. It’s just hard to find time with 8 months old baby.

Nico -.-

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Simon Mao wrote:
Coyote2710 wrote:
hello, best driver for osram 1mm red (CSLNM1.23) around 1.5-2A using single 18650? continuous use on C8+.

i’m making a driver sample for red LED
30%-100% two modes

do you know when it will be available for sale?

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Hello Simon,,,
Just wanna say hello here.
I’ve bought some Convoy Flashlights at your AliExpress store and I’m very happy with your products Thumbs Up Thumbs Up

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Quote:
2020/7/30
M21C-U available now

2020/7/30 M21C-U available now

Convoy M21C-U flashlight, XHP70.2, ramping

That’s a great flashlight. I’m especially interested in the UI.

Funtastic
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Wait….the Osram red is 2.4v so can I not use a regular 8*7135? I’ve built two with that driver for 230 lumens and all seems fine, it certainly hasn’t killed it

I’m guessing Mateminco has also used the same driver at 3 volt for their FT03 Mini model using all 5 colors

Piercing The Darkness YouTube channel – https://www.youtube.com/c/PiercingTheDarkness

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M21C-U

Simon Mao wrote:

This driver is similar in function to anduril, but the code is rewritten, which is more conducive to compatibility with components.

The charging version of M3 will be launched soon, it applies this ramping program.

M3 with USB-C charging? That will be great!

I wanted to buy M3 but ended up buying M4U mainly because of the USB charging feature (currently in shipping, hopefully will arrive in the next few weeks).
Here’s why : I had a BD06 (XML2, 26650) , it has micro-USB charging (with litter adapter attached to the side switch). It’s been very useful, I mainly used it around the house/yard.
It’s very practical for around the house, even more so for traveling, no hassle with external charger.
I took it for traveling out of town a few times and unfortunately I lost/misplaced it. I bought M4U as a replacement for my BD06.

M3 with USB-C charging + M21C-U’s = super awesome. When will it be launched?

Funtastic
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I just hope the thermal limit has been increased because the current version steps down at 43°C

Piercing The Darkness YouTube channel – https://www.youtube.com/c/PiercingTheDarkness

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Another suggestion Simon, while you are at it, it’s also gonna be awesome to update the S2+ , or make something as a more modern version of S2+ .

IMO :
S11 seems to have a very beautiful body design style for a tube light .
S2+ has the most practical size for EDC .
Convoy’s new best EDC flashlight = S2+‘s size with S11’s body style, with USB-C charging and M21C-U’s UI , XPL HI / SST40 / LH351D ~4500K .

Big Smile Love Cool

Edit/rewording :
Convoy S11 mini (similar size of S2+) , with USB-C charging + M21C-U’s UI.

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