[PD] servo pinmode on [arduino]

[Matteo Sisti Sette]

Hi,

When using [arduino] and setting a digital pin in "servo" mode, the 
input range that corresponds to the full 180-degree range of the servo 
is 0 to 0.66667 instead of 0 to 1.

Is it:
A - that different servo motors have different specifications
B - a wrong scale factor in [arduino], or
C - a wrong scale factor in the arduino code itself (i.e. the 
StandardFirmata sketch or the servo library)
?

I know I can easily work around it by rescaling in Pd...

thanks
m.