@mitu

Installing Stella was the trick.
Thank you for your help.
I know she's going to enjoy playing River Raid with the correct kind of controller.

@gamester
In the Retropie setup script

Manage packages > Manage core packages > emulationstation > Configurations/Options > Swap A/B Buttons in ES

@theatomicfire said in Trying to make my own motion control with retropie:

However, I have been running into problems getting the gamepad "configured" within retropi. I created cfg file for my "input device" which retopi recognizes, but none of the commands i input through the script actually go through

Do you mean EmulationStation will not recognize and configure your input ? Is your device working with jstest or sdl2-jstest ?

Do you have any ideas as to how I could implement this?

Difficult to say without any more details or a look at the code you used.

That's a fortunate coincidence :).