Has anyone done work with the Parallax Motor Mount and Wheel Kit with Position Controller? It uses a single wire serial line at 19.2kbps and requires sending commands broken into high bytes and low bytes.
This is the unit:
http://www.parallax.com/tabid/768/ProductID/507/Default.aspx
I'm having trouble getting any commands to work reliably using serial out of the Tx pin on the Arduino and into th data line on the Parallax position controller. Even without trying to read anything back I must not be sending the right bytes.