Hi there ezroboter's!
I'e been a lurker for quite awhile and fairly recently got my developer's kit. I'm having blast so far! I posted some months ago to inquire of the ez-b v4 board would support my Kobuki base which i received as part of a Turtlebot 2. It's a supercharged iRoomba/create (no vacuum parts, but quite a bit more power, lots of connections. Bigger battery, etc.).
Folks assistance in those early days is much appreciated as it allowed me to move forward, but I appear to continue to hit a wall. The Kobuki base is reportedly electrically compatible to the iCreate, however, I can't get the ice-robot Roomba project to connect.
If you look at the user's manual on page 10, you'll see the wiring diagram for the db25 serial port (linked below). The major difference between the iCreate and the Kobuki is that there's no ps/2 connector like the one is the video tutorial. I've got a servo (3 wire) plugged into D0 of my ez-b and disconnected the power wire. I've got ground going to pin 25 and the signal wire going to the pin 1(serial rx) on the kobuki. I have a suspicion that I should have my signal wire going to to the Kobuki's D10 which is its pin 3.
I figured I'd solicit the community's advice before moving forward. I have managed to get two arm's constructed from A12's Dynamixel's and a few other items integrated but this one worries me simply due to the cost of the Kobuki:)