I have been looking for a few weeks now on how to make a .py file start on startup.
I have had no luck on any of the methods working, does anyone have any ideas.
The file is reasonably small and will need GPIO input from a PIR movement sensor.
Make sure your script runs fine from the command line first.
Also, if you are dealing with the GPIO pins, make sure you are running your script with the proper permissions.  I know when I access the GPIO pins on my pi, I need to use root/sudo to access them.
Autostart on raspberry pi