"I am also interested in this.  I have both types of sonar, but I am trying to encourage my local community to build rovers and I am trying to get the price point down as far as possible.  As I can get the HC-SR04 down to $1.50 in…"

"Another avenue is to use an off the shelf - or finding a code snippet - for a "v-tail mixer"This is, in essence, what these motor controllers are doing."

"I would like to take part in the development of rover software on the APM2.  Where do I go to become a part of this process?"

"I, too, would like some help here.  I haven't seen instructions on how to activate PPM (apart from this post, thanks!) I have Spektrum Satellite receivers.  I even bought the level shifter along with my APM2 (if that is even…"

"How long to ship after you receive the parts?  Is there a simulator I can begin working with?  Some write up on how to emulate the board?  If I could get started on the "what happens when I do THIS!" part of my project,…"