Todbot has more photos and a 3rd Roomba Bluetooth interface, he writes – “The case is a Hubble-Bubba bubblegum container which contained about a meter of uncut blue bubblegum. I tried some of the gum and it was pretty gross. But the container was cool, looked a bit like the Roomba and was blue, so it obviously must become a Roomba Bluetooth adapter.” Link.
Also, check out Todd’s new how-to on making a Mac OS X Bluetooth serial port.
Lastly, previous the how-tos on controlling a Roomba with a Mac/PC and with Bluetooth.