This is kinda two questions.
Firstly, can I make a python file run before RetroPie starts?
Secondly, the python file in question would be one to drive the Blinkt! led array. In this case would the python file run in the background whilst RetroPie boots and runs?
I’d like to make a little retro console for my nephews and a few sparkly lights while they play would go down well.
Any advice much appreciated.