home router battery backup

Thu Jan 13 20:00:33 UTC 2022

On Thu, Jan 13, 2022 at 11:00 AM Chris Adams <cma at cmadams.net> wrote:
>
> Once upon a time, Dave Taht <dave.taht at gmail.com> said:
> > I tend also to hang a good gps off a second usb port, if available.
> > There's a topic for geeks - does anyone else really know (or care)
> > what time it really is?
>
> 25 (or 6) to 4?
>
> Running GPS over USB for timing makes me twitch though - too much
> jitter! :)  Use a proper serial or GPIO port, with that you can get down
> to sub-microsecond accuracy.

No, no, I actually went through the time/hassle and expense to create
a usb gps with a PPS
output, and then wanted to put a supercap on it because batteries
didn't last long enough.

https://lists.bufferbloat.net/pipermail/thumbgps-devel/2012-May/000497.html

They were sold wholesale for a while. I don't know if any modern usb
gps has a pps
output... I still have enough of these left to last a lifetime.

> --
> Chris Adams <cma at cmadams.net>

-- 
I tried to build a better future, a few times:
https://wayforward.archive.org/?site=https%3A%2F%2Fwww.icei.org

Dave Täht CEO, TekLibre, LLC