My NEO-F10N board is hooked to a Pi 5 via USB-C. Can I just run a Dupont cable from the PPS pin on the board to pin 18 on the Pi or do I need to yank the USB connection and run all five wires necessary (3.3v, GND, TX, RX, PPS) to the Pi GPIO
I know how to configure PPS on GPSD. Just not sure if the TX and RX being on separate UART’s is problematic or not.
You’ll need to wire them…that model just has the UART1 available; comms over usb isn’t implemented
Thank You!
Hi John (@JohnEH ),
Just to clarify:
The NEO-F10N does not support USB directly. On the GPS-24114 Breakout, the CH340 USB-C connection is connected to the GNSS UART TX and RX.
It is perfectly OK to have USB connected, to provide power and TX/RX, and then have a separate jumper wire to connect PPS to a Pi GPIO pin. So long as they all share a common ground - provided by the USB connection.
If you want to use the TX and RX Breakout pads directly, you will need to open the USB-RX jumper link on the back of the board to prevent the CH340 and Pi outputs fighting each other… Solder the USB-RX pad closed if/when you want to use USB again.
I hope this helps,
Paul