[sdiy] advice on creating power for small wearables? batteries ? solar ? Etc

[David Simpson]

Hello,

Just last week I took an "Electronic Prototyping For Designers"
<https://grayarea.org/workshop/electronic-prototyping-for-designers/> with
the founder of Loomia, Madison Maxey organized by GreyArea.org
The  kit came with 2x PKCELL LP503035 3.7V 500mAh batteries
<https://www.digikey.com/en/products/detail/adafruit-industries-llc/1578/5054539>
and an Adafruit Micro Lipo - USB LiIon/LiPoly charger.
<https://www.adafruit.com/product/1304>

- david

On Wed, Oct 7, 2020 at 1:51 PM Scott Young via Synth-diy <
synth-diy at synth-diy.org> wrote:

> I read a great piece of advice which I think came from notable wearables
> expert Sophie Wong - if it’s for something for yourself, lipo batteries are
> the best option because they’re small & rechargeable, but if it’s for
> something you’re going to sell then go for ‘normal’ AA / AAA/ coin cell
> batteries. This is because Lipo require special chargers which normal
> ‘consumers’ won’t have, but if you’re using it yourself they’re great if
> you want to hide the battery.
>
> I use lipos all the time in my projects.  Great for exactly what you’re
> describing , micro controller and a few leds.
>
> Cheers,
> Scott.
>
> Sent from my iPhone
>
> On 7 Oct 2020, at 18:30, Daniel Roberts <danmroberts at gmail.com> wrote:
>
> 
> For a one-off or small quantity project, Adafruit has a lot of small
> rechargeable batteries, as well as boards to manage charging:
> https://www.adafruit.com/category/138
>
> On Wed, Oct 7, 2020 at 12:46 PM Dan Snazelle <subjectivity at hotmail.com>
> wrote:
>
>> Hello
>>
>> I am working on a project that is quite small. I would love some advice
>> on which coin or flat  batteries are good , small and have a decent output
>> ..I would love to be able to drive leds, a 3.3v uprocessor, maybe a small
>> speaker but of course AA batteries or a 9v are too big for this
>>
>> another possibility is a storage battery with a solar cell that
>> continually charges the battery—I have never tried this and once again any
>> advice would be great.
>>
>> obviously it’s possible as the Apple Watch has quite a small footprint
>> yet is able to drive a screen and a microprocessor. i suppose a tiny dc to
>> dc converter could help
>> Too
>>
>> I see other examples all over the place I’ve just never been in a
>> position where I needed something very small and instead of going through
>> thousands of entries online I figured I would ask the community first
>>
>>
>> THANKS FOR ANY HELP
>>
>>
>>
>>
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-- 
david o. simpson | cameraperson | 646.515.2005 | binarymob.com | earth
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