[time-nuts] Re: 2nd Run of TimeHats

[Rick Thomas]

Put me down for two of the TIMEHATs.  Sounds exciting!

Rick

On Sat, May 1, 2021, at 9:10 AM, Bill Notfaded wrote:
> I'd be interested in 2 too.
> 
> Bill
> 
> On Wed, Apr 28, 2021, 4:10 AM Michael Gindonis <michael.gindonis at gmail.com>
> wrote:
> 
> > I would be interested in at least one, perhaps even 2. and perhaps bare
> > boards.
> >
> > Some things that if not already considered, could make it more interesting
> > than it already is:
> >
> > - possibility to have a 26 pin connector instead of the 40 pin connector
> > would be nice for use on Pi 1B. ( or just an option for unsoldered
> > connector and one can solder it oneself.)
> > - bare board.... with breakout connections for RTC and GPS modules,  a
> > CR2032 holder... this could make the bare board handy as time-nut oriented
> > protoboard to use with other modules.
> > - extra pads opposite GPIO side of board to mount a couple extra SMA
> > connectors. ( using proto space one could add one a buffered PPS out or
> > other timepulse out )
> > - MAX-M8W with active antenna out.
> >
> > I have been lurking on this list for a while. A minor upgrade to my low
> > budget ntp server is long overdue. Have used Aliexpress RTC modules with
> > the Pi ( with modifications to use a CR2032 safely).  I have also had a few
> > Pis running with nearly 20 year old surplus fastrax GPS modules which
> > include a patch antenna. Just a protoboard, jumpers, sometimes a backup
> > battery and some DIP switches for setting modes. I had started a GPS board
> > design in KiCAD a while ago but got bogged down when trying to layout the
> > traces for the antenna connector according to the module manufacturer's
> > recommendations.
> >
> > At the moment I just one running GPS ntp server on an old Pi 1B. The module
> > I use works well most of the day. Having a patch and no external antenna
> > connector the whole module must be exposed to sunlight. The module doesn't
> > adjust it's TXCO offset if it doesn't have a GPS fix so it may drift a bit
> > on sunny days.
> >
> > Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std
> > Dev
> >
> > ==============================================================================
> > NMEA                        8   7   224    -17.321      8.039    +55ms
> > 238us
> > PPS                        61  36   240     -0.000      0.003     -0ns
> > 414ns
> > ftp.mikes.fi               19  13  310m     -0.050      0.010  +1718us
> >  64us
> > ntp.netnod.se              15   9  241m     -0.046      0.044  +1596us
> > 183us
> > time.cloudflare.com        49  26   13h     -0.099      0.013  +2935us
> > 372us
> > ivanova.ganneff.de         14   9  224m     -0.045      0.025  +3083us
> >  79us
> >
> > Best regards...
> >
> > ...Mike
> > ---
> > Michael Gindonis
> >
> >
> >
> > On Mon, Apr 26, 2021 at 7:58 PM John Miller via time-nuts <
> > time-nuts at lists.febo.com> wrote:
> >
> > > Hello everyone,
> > >
> > > I’ve seen a number of messages lately that reference the TimeHat boards I
> > > put together a couple of months ago, with lots of positive feedback,
> > which
> > > I really appreciate. The first run of boards I did sold fairly quickly,
> > and
> > > based on a number of emails I have gotten lately there seems to be some
> > > renewed interest.
> > >
> > > As such, I’m going to order up another batch of PCBs and parts, but I’d
> > > like to get an idea of how many I need to order to satisfy current
> > demand.
> > > The GPS modules come from China, so there is about a two or three week
> > wait
> > > them, so I want to make sure I have enough.
> > >
> > > For those not familiar, you can learn more about the TimeHat here:
> > > https://millerjs.org/timehat
> > >
> > > Regards,
> > > John
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