Raspberry Pi - Data logging

[wmkhizer]

Hi there, im kinda new to raspberry pi.
Can someone share some tips & advice on how to make a data logging.
I'm using Raspberry pi 2 model B, Jessie.
Hope all the experts out there can help the newbies here

[experix]

"data logging" is a huge category. Nobody can tell you how to do "data logging". Start with a defined problem, and you can get lots of hints about what to use and how to use it.

[wmkhizer]

oh sorry for that..
im currently working on a project using a GPS (ublox neo 6m).
I've connected the GPS to GPIO ports and it work okay. i wanted to collect & save all the data that it receives.
so i was just wondering how to do that..

[davidcoton]

oh sorry for that..
im currently working on a project using a GPS (ublox neo 6m).
I've connected the GPS to GPIO ports and it work okay. i wanted to collect & save all the data that it receives.
so i was just wondering how to do that..

How much data each time, and how often?

[DougieLawson]

Are you going to decode the NMEA sentences or simply store those for later processing?

Do you want to use a flat file, a comma separated variables file (which you can load in LibreOffice Calc or Excel), or a database of some description?

[wmkhizer]

Are you going to decode the NMEA sentences or simply store those for later processing?

Do you want to use a flat file, a comma separated variables file (which you can load in LibreOffice Calc or Excel), or a database of some description?

Sorry for the late reply, i just want to simply store it for later processing.
A comma separated variables would be nice. easily to put in excel n etc..

How much data each time, and how often?
i'm not quite sure. Every few seconds? How would you recommend?

[davidcoton]

How much data each time, and how often?
i'm not quite sure. Every few seconds? How would you recommend?

Are you tracking a walker or a rocket? What precision do you need (that is, what distance error can you tolerate before updating)?

You need to think through these basics (and probably several more) to define your requirements before trying to specify a solution.

[liudr]

I recommend Python as the programming language. You need to install pyserial library though. You can open serial port and just dump whatever you read to a file, flush the file periodically to prevent loss.
Install the library:

Code: Select all

sudo pip3 install pyserial

Then find some sample code of serial port communication. I assume you have your GPS hooked up to the AMA0 serial port on GPIO pins, correct?