M100RAK Robotic Arm Kit User Guide

RobotShop Inc. www.RobotShop.com
Hitec HS-785HB Servo
The Hitec HS785HB servo motor is different than most other servos in that
it offers 1260 degrees of rotation (3.5 turns) standard versus the normal
180 degrees for a normal servo. The servo does not need to be modified
in any way, though it is important to note that only pulses between 600us
to 2400us correspond to a position. A pulse of 500us will cause the motor
to rotate at full speed in one direction while a pulse of 2500us will cause
the motor to rotate in the opposite direction.
Note that the arm cannot mechanically allow the joints to rotate 360 degrees, so please be
cautious about which signals are sent. Additional specifications can be found here:
http://www.robotshop.com/PDF/HS-785HB.pdf