I use to use a DS3 on Moutain Lion with my old Macbook Air. Amongst many (too many) other problems on my new Macbook Pro which I'm having more and more reason to ditch, I just can't seem to be able to pair a PS3 Controller on Yosemite. Tried resetting the controller, plugging, unplugging, pushing the PS3 button, activating-reactivating bluetooth etc... It simply doesn't work. This is one of too many Yosemite bug and I'm about to retake my old Macbook Air for transport and switch to PC for serious work or gaming.