Add Command to Send Servo Calibration Values

[GoogleCodeExporter]

Continuous rotation servos often don't have an exact center until calibrated. 
some servos have a pot on them to adjust but others will need it to be done 
in software.

Original issue reported on code.google.com by rhickman on 18 Apr 2010 at 5:18

[GoogleCodeExporter]

c = calibrate the servo's center PWM value
Servos that have been modified for continuous rotation don't always center 
themselves
on PWM 90, which should mean no movement at all. This can result in the robot 
not
driving straight and turning poorly at slow speeds. You can now calibrate what 
the
center value is, which on my robot is the command "w 85 86", which centers the 
left
servo on 85 and the right on 86.

Original comment by glen.arrowsmith on 23 Apr 2010 at 5:50

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[GoogleCodeExporter]

This is in place and thanks to Glen we store it in the Arduino EPROM>

Original comment by rhickman on 2 Jun 2010 at 3:17

• Changed state: Fixed
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