Rather than use the Hat, you might consider just using the breakout board and just using hookup wires to connect it up. Connect up the Vin pin to +5, ground to ground, TX and RX to the serial port pins and the PPS pin to GPIO 18. That’ll save you $5, if nothing else.
Add dtoverlay=pps-gpio,gpiopin=18 to config.txt, comment out the getty on ttyAMA0 in inittab, use dpkg-reconfigure to set up GPSD on /dev/ttyAMA0. At that point, ppstest should see the PPS output and gpsmon should be able to see the GPS. I believe it’s still the case at this point that you need to build a custom ntpd with support for the GPIO PPS driver, as it’s not turned on by default in the Raspberry Pi distro. I did something very similar (wired the same, but I had made my own “cap” - not quite a hat - board for the GPS) to make my Pi Zero public NTP server. > On Apr 22, 2016, at 12:36 PM, Hal Murray <[email protected]> wrote: > > > [email protected] said: >> As I recall there was work using the Pi 1 to make a ntp server and that >> could use a simple gps receiver dedicated to the system. Its installation >> was pretty simple. > > Adafruit sells a GPS HAT. Some soldering required: the 40 pin header comes > loose. > > Uputronics has one if you are in Europe. It's slightly different. > > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
