From Arduino Radio Control

Main: Servo calibration procedure

The standard pulse width for servos ranges from 1000 to 2000 microseconds: servos are supposed to move their arm to the 0 position when receiving a 1000 microseconds pulse, and move it to the 90 position when receiving a 2000 microseconds pulse.

However, many servos support or require a wider pulse range. HobbyKing's HXT500 servos, for instance, respond to a range of 720-2200 microseconds pulses, moving their arm by 110.

Entering the widest pulse range corresponding to your servos will achieve maximal mechanical resolution.


Power-on the receiver, enter Command mode, and for each channel (following procedure is given for channel #1):

See the Channel variables page to learn more about PWL and PWH variables.

Read Servo control interface in detail for more information about servo pulses.

Retrieved from
Page last modified on July 05, 2013, at 03:12 PM