¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
  1. KM4ACK-Pi
  2. Topics

Portable Digipeater GPS Issue

 

I am building a portable digipeater following Jason's video but my pi isn't recognizing the GPS. I have triple checked everything and rewatched the video several times but still can't get it to recognize the GPS.
?
When i us the cgps command there is no data being displayed.
?
Any help is appreciated.
?
W4ACR - Randy
 

Which GPS are you using? What does your /etc/default/gpsd file contain? With the GPS connected, what does it return when you run:
?
ls -l /dev/serial/by-id
?
--
73, de KM4ACK
|
|

 

?
?
 

I have my Pi as a stratum server for NTP time and FT8 and using USB make sure your config is correct.?IE: "sudo nano /etc/default/gpsd "

?For my my GPS is /dev/ttyAMC0

You have to define your device in GPSD first.? This is what my file GPDS looks like.?

# Devices gpsd should collect to at boot time.
# They need to be read/writeable, either by user gpsd or the group dialout.
START_DAEMON="true"
USBAUTO="no"
DEVICES="/dev/ttyACM0 -s 115200 /dev/pps0"
GPSD_OPTIONS="-n"
GPSD_SOCKET="/var/run/gpsd.sock"


Start Daemon? command makes sure that GPSD starts when the Pi is rebooted.??
USB Auto is where the Pi recognizes the USB device automatically.? In my case I have it turned off
I specify that the my GPS is on AMC0 in my case and -s is where I tell the pi what comport speed the device is, IE: 115200.??
GPSD -n = no wait for the client to poll GPS (starts spitting out GPS data immediately)
GPSD Socket = the socket GPSD for the system.?

Hope this helps
73's?
Rob?
K9SAT

On Fri, Dec 13, 2024 at 5:58?AM km4ack via <jason.oleham=[email protected]> wrote:
Which GPS are you using? What does your /etc/default/gpsd file contain? With the GPS connected, what does it return when you run:
?
ls -l /dev/serial/by-id
?
--
73, de KM4ACK
|
|

 

Ok, nothing seems to be working so i have ordered a different GPS dongle. It should be here tomorrow.
 

My GPS puck recently started working intermittently. Fortunately the puck has a red light to show that it is on. Turns out it was not making a connection when plugged into any of the three Pi's I have unless I forced it to one side or the other in the USB port. I replaced the puck with a GPS dongle and all is good now.

73
Earl KI4OXD

On Tue, Dec 17, 2024 at 7:40?AM W4ACR-Randy Shell via <randywshell50=[email protected]> wrote:
Ok, nothing seems to be working so i have ordered a different GPS dongle. It should be here tomorrow.
 

So, i have bought another GPS, actually the one you did the video with and still the same problem. Re-installed everything on the pi and still the same problem.?
 

Finally got the GPS working, since I'm not able to copy and paste i found some typo's and once they were corrected GPS began working properly.
?
I have some errors in direwolf but I won't to try and figure those out myself.
?
One thing i have learned in Ham Radio is most of the time if you are having trouble, it's the operator's fault. In my case anyway.
?
Thanks to all for comments.
?
W4ACR - Randy.
 

One thing to remember?is that some items with the GPS won't start working until your GPS can contact satellites. Try moving the system to someplace that has a clear view of the sky.?
Good luck.
Kevin, WA4KBM

On Wed, Dec 18, 2024 at 9:43?PM W4ACR-Randy Shell via <randywshell50=[email protected]> wrote:
So, i have bought another GPS, actually the one you did the video with and still the same problem. Re-installed everything on the pi and still the same problem.?
 

What Kevin said.? Depending on how Direwolf is configured, digipeating and beacons may be supressed until there's a GPS position lock.? Clear view of sky helps immensely (my basement window might get 2-3 sats when the GPS stars align).
Steve KS1G

1 - 10 of 10