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

[David Jensen]

I would take 2 also.  

Thanks,
David

> On May 1, 2021, at 11:10 AM, Bill Notfaded <notfaded1 at gmail.com> 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
>>> _______________________________________________
>>> time-nuts mailing list -- time-nuts at lists.febo.com -- To unsubscribe
>> send
>>> an email to time-nuts-leave at lists.febo.com
>>> To unsubscribe, go to and follow the instructions there.
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at lists.febo.com -- To unsubscribe send
>> an email to time-nuts-leave at lists.febo.com
>> To unsubscribe, go to and follow the instructions there.