@ase1981 said in PS3 connected by USB on RPI4 running most recent Retropie:
However I am confused about the "plug and play" sync when using USB. Once it is synced, will I be able to disconnect the USB wire and still use the controller?
For a simply USB connection, the controller doesn't need to be 'synced', you can just press the PS button and it will start working, i.e. you can configure it and it will be available for the emulators included.
I don't want to be tethered to the RPi.
Using USB, it won't be 'tethered' exclusively to the Pi, that happens only when you pair it via Bluetooth.
I see there are bluetooth syncing options available, but it looks complicated and I would rather avoid that if possible.
It's really not complicated and I think you should give it a try.
Also is it possible to have more than 1 ps3 controller synced and running at the same time for 2 player games?
Yes.