Page 1 of 1

GPS Raspberry Pi

Posted: Tue May 05, 2015 9:00 pm
by dramabeatz
I am planning on creating a gps tracker that displays the location on a map and shows movement(refreshes every 5-10 seconds)

The GPS data will be received over VHF transmission on the select frequencies (151,820 MHz, 151,880 MHz, 151,940 MHz, 154,570 MHz, 154,600 MHz).

I have a TFT screen for display.

My father is a hunter and uses dogs. He tracks them with a GPS collar.

He has a handheld device for this but it is difficult to hold, and look at the device while driving. The reason being that he runs the roads to protect the dogs from any danger when crossing highways and such.

If someone could give me an idea on how to receive the GPS data sent over VHF signals and put them into a GPS format with a map, also I want to add a GPS tracker in his vehicle so he also shows up on the display.

Any help with links/parts/or advice is greatly appreciated.

(I have looked through forums and online but couldn't find anything related to VHF receiving)

Thank you. :) :D :D :D :D :mrgreen:

Re: GPS Raspberry Pi

Posted: Tue May 05, 2015 10:34 pm
by dramabeatz
Would this software work on a Raspberry Pi?
http://ravtrack.com/gps-software-downloads

Re: GPS Raspberry Pi

Posted: Tue May 05, 2015 10:40 pm
by DougieLawson
dramabeatz wrote:Would this software work on a Raspberry Pi?
http://ravtrack.com/gps-software-downloads
No.

That software isn't open source and it's build for X86/X86_64 processors.
Your RPi has an ARM6 or ARM7 processor and can't run X86 stuff without an emulator and even then that's unlikely to work.

If you want to read GPS data start by installing GPSD.

Re: GPS Raspberry Pi

Posted: Tue May 05, 2015 10:57 pm
by dramabeatz
Is there any certain module I need to get the GPS data from the VHF frequency?

Re: GPS Raspberry Pi

Posted: Tue May 05, 2015 11:21 pm
by ame
You need a radio receiver and a USB sound card.

Tune the radio to the desired frequency. Connect the sound output from the radio to the mic. input of the sound card.

Run some modem software like soundmodem or direwolf to decode the data from the audio signal.

Really you need to know a lot to get this working.