[time-nuts] small multi-timezone display

[Adam Kumiszcza]

I had an old iphone sitting on my desk all the time showing the clock using
https://apps.apple.com/app/atomic-clock-gorgy-timing/id295302256 (Gorgy
Timing app). It was using my local wifi and using SNTP to connect to my
local GPS NTP server.

It worked great for a year or more, until one day I noticed a bump on the
iphone's case. It turned out the battery got swollen by constant use (it
was connected to a charger all the time). So it can get dangerous!

I guess more modern phones and tablets could do it better (trying to keep
optimal charge all the time, sometimes I even see a message that my iphone
won't charge now because my normal behaviour shows it won't be needed until
6AM, so it will charge later…). Also maybe using the smallest possible
current or setting some time switch for the charger will help, but I guess
most smartphones or tablets are not really prepared to work non stop.

Adam

On Fri, Jan 8, 2021 at 4:56 PM Robert LaJeunesse <lajeunesse at mail.com>
wrote:

> If I had to solve this I'd consider a cheap (~$53 US, delivered) 7"
> Android tablet:
>
> https://www.banggood.com/512MB8GB-Allwinner-A33-Cortex-A7-Quad-Core-7-Inch-Android-4_4-Kids-Tablet-p-1636039.html?cur_warehouse=CN&ID=224&rmmds=search
>
> Paired with an app like this:
> https://play.google.com/store/apps/details?id=tm.app.worldClock&hl=en
>
> No, I'm not sure the tablet does NTP, but it does have WiFi and could
> prove close enough. You might find it self-setting while shelf setting.
>
> Bob L.
>
> > Sent: Thursday, January 07, 2021 at 10:35 PM
> > From: "Lux, Jim" <jim at luxfamily.com>
> > To: "Discussion of precise time and frequency measurement" <
> time-nuts at lists.febo.com>
> > Subject: [time-nuts] small multi-timezone display
> >
> > I've got a shelf about 80cm long that I'd like to have 4 timezones
> > displayed on.
> >
> > The obvious easy solution is go buy 4 clocks and put them there.
> >
> > But, being a member of this list - anyone know of a off the shelf
> > multizone display that accepts NTP or receives WWVB?
> >
> > Because, after all, if I glance up and want to know what time it is in
> > DC, I want it accurate to microseconds.
> >
> >
> > (My wife keeps setting other clocks in the house fast for one reason or
> > another. Or they just drift.)
> >
> > Maybe a $100-200 budget here.
> >
> > (Not interested in building something unless it's really easy..
> > remember, the competition is going and buying 4 clocks from CVS)
> >
>
>
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