Hi, I am trying to buy a controller to use with Retroepie when I get around to getting a Raspberry pi3. I need to know wether the controller needs to be a Dualshock 3 in order to work, or if the older Sixaxis controllers also work. Also, I can not seem to find an answer to wether or not the internal bluetooth of the retropie 3 is sufficient to connect a ps3 controller, or if a dongle is still needed. Thanks in advance :)