PS3 YLOD diagnosis with Arduino

Hey guys, I have 2 arduino uno's lying around and don't want to wait around for a new USB to TTL board to get here, has anyone had experience with this before?

I vaguely know that reseting the arduino can make it act as one of those boards, but that it needs a voltage divider to not brick the PS3. (I have a bunch of 1000 ohm resistors)

Could someone provide a schematic, and also where the RX and TX pins are on the PS3?