Vieleicht hilft Dir schon dieser Auszug aus der servo.cpp weiter:
attach(pin ) - Attaches a servo motor to an i/o pin.
attach(pin, min, max ) - Attaches to a pin setting min and max values in microseconds
default min is 544, max is 2400
write() - Sets the servo angle in degrees. (invalid angle that is valid as pulse in microseconds is treated as microseconds)
writeMicroseconds() - Sets the servo pulse width in microseconds
Viel feiner wird die Servoelektronik kaum auflösen.
LG Lena