The Servo 1/2/3/4 speed bytes allow the rate, at which changes to the servo positions are made, to be controlled. If the value is set to zero, changes to the servo position is immediate. If the value is non-zero, changes will occur at a rate equal 10*value milliseconds per step. The angle range is from 0 to 250 corresponding of the pulse ariation (to set the angle) between 0.75ms and 2.25ms.