Post count: 7

I am very new with all this and still have some issues, but my PS3 cont. works via bluetooth. After spending so much time looking up guides (that were focused on the old RetroPie) a just used the automatic PS3 setup in R.Pie config option.
cd RetroPie-Setup/
sudo ./retropie_setup.sh
You pair it while USB connected and it works fine. I am still having some issues with it for certain emulators, but it works.
BTW, my BT dongle is from Asus, not the cheap crap, so that might help.