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 < [email protected]> 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 -- [email protected] -- To unsubscribe send > an email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
