; FIGURE 3.
I wrote to test the trackball object.
It reports the current position and
shows button status. When the
button is pressed, the delta values
from the last button press are
displayed. Pressing the button also
lights the LED, so all elements are
tested.
So, there we are — a cool little
driver for a mini trackball that can
be used in myriad applications. I’m
just starting to explore graphics on
the Propeller, and this is likely where
I’ll go, though I’m also looking at
replacing a standard button
interface in an LCD HMI.
What will you do? Have fun,
of course, and until next time, keep
spinning and winning with the
Propeller! NV
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18
July 2012
