[chinckley]

Originally Posted by Mark McLeod

The Arcade drive has a second input (X-axis value), that isn't used in the example, but defines the turn amount. An x-axis value of 1.0 for instance will make your robot turn in place. -1.0 makes it turn in the opposite direction. In between values will make it drive in an arc.
Hover the mouse over the left edge of the Arcade Drive icon and you'll see an unattached x-axis. right click and choose constant to give it a value (0 is the default when nothing is attached).

If you choose to switch to Tank Drive then a turn in place would be .5 to one side and -.5 to the other.

Should the drive forward numbers be 1.0 and -1.0 or is the -0.5 for forward correct (as in the example).