Thank you for the point to minty pi.
Will post the first images as soon as it‘ in „beta“. But it will be fairly easy to print and build ;) will be in beta somewhere in q1 :D
We are currently in the process of creating a retropie-based diy handheld console. It would be nice to show things like the battery-level and other informations on the screen as an overlay. Is someone able to point us in the right direction? A python-based solution would be preferable, but everything else would also do the trick. Some RetroPie/Linux APIs or libraries? Maybe a starting point for us to begin?
Note: We do not need help with the coding. We just have no clue how to bring an overlay to retropie and where to start.