Hey mate,
super cool project. loved tinkering with this. just what i needed. i left you some feedback on hackster.io regarding improvements that can be made from some issues i encountered. nothing big though. i'll leave the feedback here too. Well done, really like this 
-
in OKPG installs please add the component: python-light . If you don't install this component the python script will fail in the "import time" line
-
in showgps.py line 17 the method is actually oledExp.setTextColumns() not oledExp.setTextColums()
-
in showgps.py line 45 the "if" has to be in small letters. it is currently with a capital I at the moment which is not recognised by python
-
in showgps.py line 51 the "elif" has to be in small letters. it is currently with a capital E at the moment which is not recognised by python
-
Don't forget to remind people that they have to chmod getgps.sh with executable permissions like "chmod 775 getgps.sh" for example.
Love the project mate keep it up