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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Moloflashy
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I would definitely be interested in buying some of those lights! This is exactly what i’m looking for. At this phase of the project add me for two.

Jerommel
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thijsco19 wrote:
Maybe a magnetic switch (reed switch) that’s small enough to fit the driver that could act as an electronic switch?
It could lower the parasitic drain to below 5uA like many other electronic switch lights.

They tend to have a large hysteresis though..
hank
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- Put on some leather gloves. - Take a simple light and see how “easy” you can handle that. That is not a fun play. That’s grandma, for the rest of her life.

https://etd.auburn.edu/bitstream/handle/10415/5985/11_15_2017_Lin_Gong_F...

Guidelines for designing handheld tools for the elderly.

Quote:
Abstract This thesis includes a set of guidelines on the basis of which to design handheld tools for elderly people. Elderly people area very special group of customers. First, their bodies go through many changes with the aging process. One of the goals of thesis is to study these physical changes to figure out how to design handheld tools for this special group of users. Secondly, the psychological states of older people are very different than those of normal healthy adults. If designers want to design products that are suitable for use by older people, then they need to do research on the physiology and psychology of aging.

Note for exmple the mention of rocker switches.

Oh, and the diameter section for handheld tools:

Quote:
4.1.1 Diameter of an electric toothbrush handle According to the research results of Chapter 3, we can know that the handle length should be greater than 4.76” (121mm) and the applicable range of handle diameter of an electric toothbrush should be between1.18” (30mm) to 1.97” (50mm) for both normal adults and elderly people to hold. However, the author found that the diameters of the majority of electric toothbrushes in today’s market are too thin to hold. …

Could be one reason the old 2D flashlights remain popular with older people — the battery tube is big enough to hold easily and to find.

Firelight2
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In for one.

Tally-ho
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Interested for 2 units.

Is the rotary going to be like the one of a sunwayman V10R/Jetbeam RTT01 or like a Nitecore EC22 ?

Both could probably be locked with a small sliding tab connected to a pin going in a hole into the ring to block its rotation.

Bastarrdo
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I`m in for one.

M4D M4X
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great idea! 

PLEASE NOTE
i do not work in "reviews, deals and codes" for the time being
maybe M4D M4X will return one day, but until then:

THANK YOU FOR YEARS OF YOUR SUPPORT AND FRIENDLY CONTACTS!

djozz
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@hank&others, thanks for the research and norms, I guess then that this will not become a proper grandma light then, at least it will not be for the granniest of granniest Big Smile

One of the starting points of this project is that it must be an attractive light for flashoholics too (it must be fun to give this light away with a certain proudness) , and going back (with all respect) to D-cell Maglite format whith the performance not different from a S2+ does not sound attractive to me. I must confess that my personal preference for compactness in flashlights plays a certain role here Innocent

manithree
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One of my critical features for a muggle light is a battery level indicator. Then they won’t just leave it on charge all the time. Is there any plan for aux LEDs, or some other battery indicator in this light?

id30209
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In for 1! Infinite mag adjustment and E17/21 option woulf be spot on!

WTB Titanium 4sevens 2xAA tube

Lightbringer
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djozz wrote:
@hank&others, thanks for the research and norms, I guess then that this will not become a proper grandma light then, at least it will not be for the granniest of granniest Big Smile

Oh, great, so now gramma can go die in the dark and cold…

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

Nagonka
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Great! In for 3!

casi29061965
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In for 3.

hank
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Seriously, put on your spouse’s eyeglasses and a pair of welding gloves, and see how easy it is to use the device.

We’re all in denial about what abilities we’re going to lose as we age.

ikaruz_500
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Interested for 2 units.

djozz
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Lightbringer wrote:
djozz wrote:
@hank&others, thanks for the research and norms, I guess then that this will not become a proper grandma light then, at least it will not be for the granniest of granniest Big Smile

Oh, great, so now gramma can go die in the dark and cold…

Innocent
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In for one depending on emitter options.

djozz
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manithree wrote:
One of my critical features for a muggle light is a battery level indicator. Then they won’t just leave it on charge all the time. Is there any plan for aux LEDs, or some other battery indicator in this light?

A minimalistic low battery indicator makes sense for this light, people are used to such indicators already and they are very helpful.
Something like a tiny led near the charging port: off when battery level is sufficient, red blinking when battery is low and charging is adviced, red when charging, green when fully charged.

I put it on the wishlist.

ChibiM
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In..for at least 1

Just worried about parasitic drain and the 'easyness' to open and 'replace' the battery.

 

Skuzapo
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I am in for one please

MtnDon
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An idea for a battery condition /charging indicator….
When the light is turned on….
Blue light constant on (Turned off after 5s) = Battery 100%~85%
Blue light flashes (Turned off after 5s) = Battery 85%~41%
Red light constant on (Turned off after 5s) = Battery 40%~16%
Red light flashes all the time the light is turned on = Power less than 15%

When USB is plugged in, a constant red indicates charging taking place
When USB is plugged in, a constant blue indicates charge is complete

Sub green for blue if desired

djozz
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MtnDon wrote:
An idea for a battery condition /charging indicator….
When the light is turned on….
Blue light constant on (Turned off after 5s) = Battery 100%~85%
Blue light flashes (Turned off after 5s) = Battery 85%~41%
Red light constant on (Turned off after 5s) = Battery 40%~16%
Red light flashes all the time the light is turned on = Power less than 15%

When USB is plugged in, a constant red indicates charging taking place
When USB is plugged in, a constant blue indicates charge is complete

Sub green for blue if desired


Sounds wonderful for my own lights, but is confusing without a manual. Hence the simple red/green indicator that I described above, even without manual most will have an idea what is going on.
XXX-Man
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Interested Smile

“The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom.” - Isaac Asimov

 

"With the first link, the chain is forged. The first speech censured...the first thought forbidden...the first freedom denied – chains us all, irrevocably."

 

My reviews:

Sofirn SF36 /// Thorfire VG10S /// Sofirn C8F /// Zanflare F1

takumi86
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interested for the magnetic ring! please add me to the list!

MtnDon
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djozz wrote:
Sounds wonderful for my own lights, but is confusing without a manual. Hence the simple red/green indicator that I described above, even without manual most will have an idea what is going on.

So true. Have to be able to use it without a user guide. So few things are made like that these days. Have to keep it simple for grandpa. Wait a minute I am one @73.5 ….. (most days I don’t think I feel that age, but I’ve never been this old before, so am not sure)

wapd2
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In for 2

Unloco
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Interested.

t-soung
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Interested – sounds Good.

djozz
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We passed the 100, so 10% of the needed interest is met in little more than 1 day. I’m happy about that. Lots more needed but I feel that I can already show Sofirn that this light has potential. Smile

Anthon
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interested!!

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