tomasz1994
Posts: 2
Joined: Wed Feb 08, 2017 1:13 am

GPS UART connection

Wed Feb 08, 2017 1:28 am

Raspberry : 3 model b
GPS : GLONASS NEO-7M-C UART
https://botland.com.pl/moduly-gps/4472- ... atowe.html

I'm doing all as in link below (highlight the code in boxes and copy to see what is in)
https://cdn-learn.adafruit.com/download ... rry-pi.pdf

when i type : 'sudo service gpsd status' i see "active (running)" - all excellent
but when i type: 'cgps' the status is NO FIX, lat long ect. are 'n/a' and all satelites are 'N' in column "used"

My only one idea is the fact that i'm working on this indoor, not outdoor...
... can someone help me with this issue ?

texy
Forum Moderator
Forum Moderator
Posts: 5161
Joined: Sat Mar 03, 2012 10:59 am
Location: Berkshire, England

Re: GPS UART connection

Wed Feb 08, 2017 1:19 pm

Without the gps module or antenna situated either outside, or close to a window, you'll get very poor reception.
In order to prove the setup, are you at least able to temporarily move it outside so that a good signal can prove the setup.
In my experiments I was able to get a good lock being close to a window inside.....
Texy
Various male/female 40- and 26-way GPIO header for sale here ( IDEAL FOR YOUR PiZero ):
https://www.raspberrypi.org/forums/viewtopic.php?f=93&t=147682#p971555

tomasz1994
Posts: 2
Joined: Wed Feb 08, 2017 1:13 am

Re: GPS UART connection

Wed Feb 08, 2017 3:17 pm

Thanks I will try, so you think that when all notifications are
- good, active, running and working,
- displays current data time
BUT
-don't displays data as latitude, longitude
- gps see about 10 satelites but can't use them ('N' in column 'used' after cgpsd)

It can be probably signal problem ? Nothing more with configuration or technical dammage?

texy
Forum Moderator
Forum Moderator
Posts: 5161
Joined: Sat Mar 03, 2012 10:59 am
Location: Berkshire, England

Re: GPS UART connection

Thu Feb 09, 2017 7:08 am

tomasz1994 wrote:Thanks I will try, so you think that when all notifications are
- good, active, running and working,
- displays current data time
BUT
-don't displays data as latitude, longitude
- gps see about 10 satelites but can't use them ('N' in column 'used' after cgpsd)

It can be probably signal problem ? Nothing more with configuration or technical dammage?
See how you get on with moving the kit and getting a good GPS lock. If you do, you should be able to get valid co-ordinates.

Rgds,
Texy
Various male/female 40- and 26-way GPIO header for sale here ( IDEAL FOR YOUR PiZero ):
https://www.raspberrypi.org/forums/viewtopic.php?f=93&t=147682#p971555

idk_lol
Posts: 1
Joined: Wed Apr 11, 2018 2:30 pm

Re: GPS UART connection

Wed Apr 11, 2018 2:33 pm

I am having the same problem, I tried at the window side too but getting n/a in every case.
any help will matter a lot.
thanking you.

Return to “Troubleshooting”