Reader [Jakeh] wanted a Bluetooth based game controller for his Axim. Unfortunately, the only commercial option didn’t fit very well. He decided to chop up the Bluetooth controller and wire it into an original Playstation controller. Wiring was slightly annoying because half the buttons in the Bluetooth controller don’t have a common ground. The final touch was modifying two mechanical pencils to provide clamping pressure on the outside of the PDA. Here’s [Jakeh]’s original post about the project and his Flickr photo set.