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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Lagittaja
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djozz already replied but…
…here’s an example from LCSC at ~1.1-1.2$ a pop in reasonable quantities
https://lcsc.com/product-detail/USB-Connectors_XKB-Enterprise-USB3-1-TYPE-C-FSABC_C319140.html

Problem is usually IPX7 or IPX8 Type-C connectors are also made as USB 3.1 Gen 2 compatible which drives up the cost (and complexity) unnecessarily.
For a flashlight you really don’t need a Type-C connector with 24 pins… You only need 6 pins.

I’m not good at rummaging through Alibaba but here’s a cheaper example
https://www.alibaba.com/product-detail/IP68-Waterproof-USB-Type-C-6PinFemale_62252784266.html
It even has “locating” pins so you can make a couple of holes in the PCB for it to sit in for some added support.

With these, like I said previously, the light needs to be designed around it and implemented correctly since the ingress protection comes from the o-ring which seals against the “chassis”.

If anyone is interested or perhaps wants some light reading before bed, here’s a link to Parker’s o-ring handbook. Almost 300 pages worth of fun.
https://www.parker.com/Literature/O-Ring%20Division%20Literature/ORD%205...

SKV89 wrote:
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:
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$. Certainly not expensive but small things add up quickly and Sofirn needs to make a profit. Though that was based on LCSC and glancing over some Alibaba listings I guess they could find something closer to 0.3-0.4$.

P.S. djozz, it would be a nice thing if this flashlight would follow the USB Type-C spec. By this I mean the connector needs to have 5.1k pull-down resistors between CC and GND so that USB Type-C chargers will actually charge the flashlight.

SKV89
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Thanks!

djozz
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Thanks for the extra USB-C socket information, and for the Parker O-Ring Handbook link, best lockdown read ever Big Smile

I think I already asked for the USB-C charger support, Sofirn should be able to handle that because they had the request before for the LT1 and I believe already implemented it there in the next batch (not sure).

Lumens Industry
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Interested

vandasian
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Interested

BurningPlayd0h
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Interested

djsz
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I’ll take one!

Rsqweezy
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I’ll take 2 or 3

lukehale
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Interested.

Linburger
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Add me to the list!

Tixx
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Interested!

firstcipher
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Interested

Geuzzz
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Interested in two if it has usb-c.

djozz
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Geuzzz wrote:
Interested in two if it has usb-c.

USB-C is planned. But to be frank, I have not had contact about this light since the crisis. But I think this light is still highly relevant so I see it coming off the ground at some point.
Geuzzz
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djozz wrote:
Geuzzz wrote:
Interested in two if it has usb-c.
USB-C is planned. But to be frank, I have not had contact about this light since the crisis. But I think this light is still highly relevant so I see it coming off the ground at some point.

I am Frank (even by name Big Smile ). A light like this will always be relevant. And before every camping vacation I am looking for good muggle lights for the kids and my girl, but hardly ever succeed.
Would be a big plus for me if it had a warmer led than 5000k BTW,

djozz
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Quote:
Would be a big plus for me if it had a warmer led than 5000k BTW,

For me too, but the 5000K LH351D was chosen because it is a great led that Sofirn already has in-house, and it pleases many. In a later phase we can maybe ask for other emitter options but at this point that is not relevant yet.
Frink
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I finally stopped lurking and joined just to say INTERESTED for two to start. If they work out as well as they sound I could see buying a bunch more later. Would be perfect Christmas gifts in that $22 range with battery .

djozz
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Thanks for the interest, I will update the list somewhere this week.

nick779
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Add me to the list please. Most likely 1, but if executed properly ill grab a bunch for gifts.

tizzo
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I would be interested as well.

Fonckman
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Interested!

Fastgonads
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Interested!

drewski
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I’m interested in 2 if I haven’t said so already. My grandmother just experienced a power outage and I’m having a real tough time finding a decent quality flashlight for her taking her needs into account (and working with arthritic hands, vision, and lack of affinity for adapting to new tech). I want to get her an LT1 but I’m waiting for Anduril 2.0 or a simpler UI.

I always feel like an 18650 light should also be able to take 2X CR123, like the Sofirn SP31. In a power outage you can put in new batteries; you cannot recharge a battery (barring powerbanks) so unless you have extra 18650s around you basically have a proprietary cell. But bad things can happen with accidentally charging primaries, so I understand it’s too much to ask for USB and cr123 compatibility.

Looking forward to this light anyway.

Unheard
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Interested in one.

Spitzbube.

ReManG
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Interested in three right now

M78
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Interested in 2

Sari33
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Interested 1,hope with smooth knurling and design

weirfik
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interested in one

JaredM
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Curious where this project stands these days… any word from Sofirn?

https://fundrazr.com/osturaband

No affiliation, just a fan.

caramba
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Interested

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