IOIO Controls a Servo
I'm turning into a posting maniac. I'm just getting excited about how close I am to getting a household robot pet. This afternoon I modified the HelloIOIO sample application to include a slider bar that controls an RC servo. I follow a similar approach to http://trandi.wordpress.com/2011/07/03/android-ioio-rc-servo-or-esc/.
Here is a quick video.
Also check the voltage logic levels for the Roomba SCI. I remember that when I played with a roomba last time that it was not using 3.3v which is the standard logic level that my board used (the IOIO defaults to 3.3v as well). I had to add a small signal converter board which I got instructions for at http://blog.makezine.com/2008/02/29/how-to-make-a-roomba-seri/
Good luck and please leave another comment if you make progress! Also check out makerhome.ca where these posts and posts by my buddy duane are both shared.