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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dotBLF
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Can I get on the list for 3 please?

Thank you!

Nooner
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I’d likely take 2.

jkbam
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In for 1. thanks

Couchmaster
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In for 3 please.

VictorB
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I’m in! One or two lights sure

asdqqq
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In for 1 if it it is infinitely variable, starts at a moonlight level.

bonC
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Infinitely variable magnetic ring and NW? Hell yeah I’m in for 2 please!

slowtechstef
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Djozz: thanks for this great initiative!

I am interested in 2 units.

djozz
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I have no idea about the current status of the project. I know that Barry is working and he posts on BLF every now and then, but how the design plans of Sofirn have changed because of the crisis I have no idea. I guess I need to mail Barry.

Moomoomao
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In for 1!
My first light was a Sunwayman V11R – still one of my favorites but I’ve grown away from the cool white LED.
Like others have mentioned before, as long as it’s packed well with certain types of grease the ring won’t really loosen up too bad and can always be repacked.

Bwana
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Both my grandmothers have passed . Can I still get one ?

djozz
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Bwana wrote:
Both my grandmothers have passed . Can I still get one ?

if you can still catch their spirit, yes sure Smile
paosms
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I am in for at least 2. Maybe 3. Thanks!

korpzgrinda
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interested in 2 please

Unheard
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Maybe I should take one. Please add me to the list, djozz.

Spitzbube.

Sari33
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interested, hope can be more than 500 lumens output

patmurris
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Interested.

Sorry i haven’t followed the whole thread… and post #1 does not help much understanding where the project is now. Could you add updates to the first post?

djozz
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patmurris wrote:
Interested.

Sorry i haven’t followed the whole thread… and post #1 does not help much understanding where the project is now. Could you add updates to the first post?


There are no actual updates since the first post apart from that in January Sofirn asked for a draft of how the light should look like and so I made one for them. I decided not to post my draft because it will (of course, this is BLF Smile ) generate lots of discussion on something that Sofirn may not use after all. So the next update will be when Sofirn confirms that they are actually started working on the design, with hopefully first design drawings.
SKV89
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Can you provide me a link of where to find the ipx7 or ipx8 usb-c port? I’m trying to convince a flashlight manufacturer to use usb-c instead of proprietary magnetic charging.

Lagittaja wrote:
Well, I’m interested. Put me down for 3.

—-

I’ll probably repeat a lot of what’s already been said but I’ll leave my few cents anyway.

As far as features go, I would prefer a TIR optic (but not too floody). With a high CRI emitter and an efficient driver. Detented off position would be lovely.
Strategically placed (thicc) knurling would be a good thing and the no-ano/SS ring should be slightly thicker than the rest of the body.
Suggested modes are fine, infinitely variable would be nice but not really necessary.
(Though if it ends up being variable then yes, please start from ~1lm but otherwise no.)

Regarding the charging port, like raven said, IPX7 and even IPX8 rated USB-C receptacles are a thing. The light needs to be designed around one and it needs to be implemented properly but I would pay a little bit extra for that.
Though that might be a bit too much to ask for in a ~20-25$ light, considering the BOM increase.
If someone wonders about the price, cheapest USB-C receptacles are ~0.1$ a piece in 100-1000+ quantities but if you add ingress protection then they start at around 1$.
Certainly not expensive but small things add up quickly and Sofirn needs to make a profit.
Though that was based on LCSC and glancing over some Alibaba listings I guess they could find something closer to 0.3-0.4$.

If an IPX7/8 port is not possible then hiding the charging port in the threads is the next best option in my opinion.
Since personally I find flaps to be fiddly, they will wear over time (no longer water resistant) or better yet just fall off.
Sure, with the in-threads-option an o-ring will wear as well but I’d say they’re lower maintenance? Threads will have grease so there’s probably going to be enough grease on the o-ring itself to reduce the wear rate. And if damaged then it’s relatively trivial to change.

djozz
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This is the USB-C port part link that I sent Barry as an example of what can be used. But I am by no means an expert on such things, I hope that Sofirn can sort out what is usable and affordable.

 

https://www.digikey.nl/product-detail/en/amphenol-icc-commercial-products/124018612112A/124018612112ACT-ND/9825364 

 

SKV89
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Excellent thanks!!!

headburger
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In for 2, very worthwhile project!

ChibiM
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I'm concerned about safety. 

I would suggest adding a USB Power adapter as well, and not just a USB-C charge cable. Make it a complete kit if possible. 

It's a wise decision to use USB-C instead of Micro USB. Just think about the times they try to connect the cord up-side down. 

 

If you just add a charge cable, you don't know where they try to pry those cables in. Even USB-A cables can give problems. I've seen people trying to put a USB cable in an ethernet port on laptops.. and no, they weren't dumb people. Just couldn't see the holes very well. 

 

I hope Sofirn can guarantee safety and test this rigourosly before production. 

 

artooro
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I want at least two

robbobus
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2 please.

bobkido
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Looks like a worthy effort. Single unit for sure, soft commitment for another 3 for total of 4.
thanks

Just a simple man.

jon_slider
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asdqqq wrote:
In for 1 if it it is infinitely variable, starts at a moonlight level.
you can dream, I do too.. but that is not what this light is about, afaict

.

bonC wrote:
Infinitely variable magnetic ring and NW? Hell yeah I’m in for 2 please!
there is also no mention of NW, unless you mean 5000k High CRI:
djozz wrote:
led maybe Samsung LH351D 5000K 90 CRI.

.

afaict by searching posts by djozz with the word “infinite”…
it is not going to be infinitely variable:

djozz wrote:
Infinitely variable is not a promised feature
djozz wrote:
operation will be a magnetic control ring with off-low10lumen-med100lumen-high500lumen, nothing else (and so not infinitely variable).
djozz
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I have communicated the list of wishes to Barry/Sofirn in Januari, which included the wish for the magnetic ring being infinitely variable. I have not received comments on that list from Sofirn since.

But Sofirn has not even started with the design, so I’m not surprised that there are no answers to the wishes, because only when they start designing they can reflect on ideas and get a first idea of the costs of certain wishes.

The infinitely variable ring is not a key feature for this light, but if it is possible to have one while staying within budget I will certainly try to get that included.

chrisddo
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In for 1

m0nk33
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In for 1!

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