Interest collect for a new Sofirn design: tube style18650, magnetic ring control, USB-C charging, 500 lm max (AKA grandma light)

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Geronimo
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Put me down for 5 please. Not sure if I ever got on this one. Still hoping for the Blf lt1 mini as well.

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djozz
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I recently mailed Barry about this light as a reminder that the interest was still high, but he did not answer.

MorseCode
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Put me down for 3

RockHugger
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Fantastic idea ! I’m in for two please Smile

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Put me down for one please.

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JaredM
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I know this is getting the point that djozz and many are giving up hope, but I’d have no shame in pestering Sofirn into making this dang thing. Make it a deal with a nice box for gifting and I can’t ssee it not selling heavily around here and on Amz if marketed properly

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Elaboration
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I hope this isn’t necroposting, but if this ever materializes I’d be in for 3!

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Wellp, aside from the usb charging, the SDwhatever diving light ticks most of the boxes. There’s the button type (nice enough) and the ring type (hella simple).

Imagine just modding that with a usb port shouldn’t be that traumatic, eh?

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djozz
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But Sofirn did the mode order wrong in their dive lights Facepalm (plus that I like this to be a compact tube-style light)

JaredM
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So. Time for a new manufacturer here? Curious what Wildtrail would say

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If this ever happens, I would be in for 3 please. ✅

djozz
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JaredM wrote:
So. Time for a new manufacturer here? Curious what Wildtrail would say

Wildtrail may not be ideal. The key part of this light is a dedicated new driver, I know that Sofirn can design magnetic ring drivers but I have not seen Wildtrail/Luckysun design their own drivers.
JaredM
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They at least take suggestions and iterate quickly. This driver topology can’t be that complicated to figure out. A few hall sensors that each tie into a different point in a series string of voltage divider resistors feeding one analogue input pin on an MCU could be a way to do this running a linear-mode FET.

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JaredM
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How independent is Wurkkos?

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Magnetic ring? So will this have parasitic drain?

Moot cuz…..

USB-C.

Auto-disinterested. LOL Silly

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The TCR Reference Standard is the Walmart Ozark Trail OT 50L , Model No. 6103.
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djozz
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My impression was that Wurkkos=Sofirn. But Lux perpetua had more recent contact with Sofirn than me, he may have a better idea.

I must admit that I stopped taking initiatives for this project.

Sofirn/Barry had promised in December 2019 to start the design of this light in March last year, it would be the first project of a designer that they attracted from another flashlight manufacturer. I mailed him a possible structural design to help with the start. Late februari of course the corona epidemic stopped China for a few months, but Barry did not give me an status update when everything started again. Twice last year I tried to contact him about this but I never got an answer. My interpretation is that they lost interest.

I still think that this light is relevant though…

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JaredM wrote:
How independent is Wurkkos?

AFAIK, Wurkkos have their own management but they are dependent on Sofirn‘s production planning and facility. Lately, they have launched a nice portfolio of new diving flashlights (DL30, DL10R, DL70, …) utilizing magnetic control rings.

djozz wrote:
My impression was that Wurkkos=Sofirn. But Lux perpetua had more recent contact with Sofirn than me, he may have a better idea. I must admit that I stopped taking initiatives for this project. (…) Twice last year I tried to contact him about this but I never got an answer. My interpretation is that they lost interest. I still think that this light is relevant though...

See my comment above. Wurkkos, Volador, Yakorsei … all the same factory. I once had a brief chat with Barry about this project here but I did not hear anything again either.

Maybe JetBeam was interested in developing a „no frills“ budget light. I do not have any contact with them, though.

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I have a Sofirn dive light with a magnetic ring control. I love the simplicity. No fiddling with X number of button presses. No concern about mode memory. Just turn the ring to what you want. I wish more lights came this way.

The only thing I don’t like is the cool white emitter. These days, I won’t buy a light unless I can get it in warm or neutral. The tint has to be pleasing to my eyes and bonus points for high CRI. Visible PWM is a deal-breaker too.

Sari33
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Was really interest for a rotary control light with infinite variable bright at human price.
Maybe we can try ask Convoy but they already planning new lights and that would take more time

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nottawhackjob wrote:
Magnetic ring? So will this have parasitic drain?

Moot cuz…..

USB-C.

Auto-disinterested. LOL Silly

Is it the USB-C connection or the integrated charging that puts you off?

Integrated charging seems to be a polarising feature on BLF. My main issue with the feature is that it makes driver swaps difficult, but if the if I like the stock driver I’m happy to have charging. I find integrated charging especially useful in an EDC light or one that will be gifted to a muggle.

I don’t think there’s any shortage of lights without integrated charging, or of lights with Micro USB charging. However, I haven’t seen may flashlights that can charge with a USB-C cable from a USB-C power supply. That feature is really appealing to me in a EDC light – I would love to be able to quickly top up mu flashlight cell from my phone/tablet/laptop charger (or even the laptop itself) without having to carry an extra cable or adapter.

Sari33
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Imho usually I don’t consider integrated charger a necessity unless you use the flashlight often and at high current.It would be nice have it on flashlights with smaller lithium battery or AA / AAA that dischage fast

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In the grandma context, USB-C is a minimum requirement. EM charging through docking station would be better tho.

This light competes with the usual single mode, tail switch, 3 x AAA supermarket light. I got my mom (83yo) a Varta and she is very pleased with it. It must not be more complex than this.

Spitzbube.

TerriblyTorrid
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I’m down for 2 if this ever happens!

Geronimo
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If it was well made I would be fine with a higher price. I bet Hank would make a sweet one.

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djozz
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Hank would have to hire a new driver designer for this one, his drivers sofar are the spin-offs from BLF-drivers with help from Toykeeper, while this is a different type of hardware.

Geronimo
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True, I should have specified, I trust his work/product more than most. The rotary isn’t really even needed imo. Ramping is pretty easy. I though of giving my elderly mom a Blf Lt1 but I am sure she would do something to get it into strobe or something and need me to travel and fix it lol.

Emisar d1s 3a. ZL sc700d,sc64w hi,H600c,Streamlight tlr1-hl, Astrolux mfo1s 4k/purple. Olight I3t Eos black. Ylp 2m cri.ZL sc64le, k1 xhp35 hi in 4k.

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Lux-Perpetua wrote:
Maybe JetBeam was interested in developing a „no frills“ budget light. I do not have any contact with them, though.

Jetbeam doesn’t seem interested in meaningful improvements. They’ve done a couple body changes, making it bigger and heavier, and now offer a tailswitch. It’s not clear to me if they have made any changes to the driver over the last decade. Past reviewers have found it wonderfully flexible, but unregulated and relatively inefficient with no low voltage protection.

I’d love to be proven wrong, though.

nottawhackjob wrote:
Magnetic ring? So will this have parasitic drain?

There would be a minimum current draw necessary for the hall effect sensors to function. Hence why although the RRT01 is capable of extremely low output, it is not a firefly mode runtime champion.

There are a couple ways parasitic drain could be minimized or eliminated. The simplest is a separate tailswitch. It should also be possible to have some other kind of input at one end of the control ring travel to shutoff current to the hall effect sensors.

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Please add me to the list for two units. =)

djozz
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I will update the list, I’m quite a few names behind.

But I must remind you that this project is dormant. But maybe some day… (I still believe that this flashlight is relevant enough today)

Forsythe P. Jones
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Yeah this thread is so old it’s a safe bet it’s not happening. I looked at the beginning and was interested at first, but it seems to me Grandma is familiar with flashlights and had some back when she was bringing up your mom or dad. Her flashlight in those days used two zinc-carbon D cells and a PR2 incandescent bulb and a side switch, put out 10 or 15 lumens when the batteries were fresh, but had pretty good throw by our standards because of the tiny filament and 2 inch reflector.

I think she is not going to care about her light being tiny or having rotary controlled infinitely variable brightness or USB charging. It will be more important to have zero parasitic current since the light will sit around for years without being used.

Frankly there are perfectly good Duracell lights powered by three AA’s at Costco in the $5 range, that have 2 or 3 levels with the top at a few hundred lumens. That seems fine for this purpose. She can handle the pushbutton UI since it is still simple.

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