Power HD Continuous Rotation Servo AR-3606HB
The AR-3606HB is a standard-sized servo that has been built by Power
HD specifically for continuous rotation. At 6 V, it has a maximum
rotation speed of 71 RPM (no-load) and can produce up to 93 oz-in (6.7
kg-cm) of torque. It features two ball bearings on the output shaft for
reduced friction, and it offers easy access to the rest-point adjustment
potentiometer. The servo can be controlled using a direct connection to
a single microcontroller I/O line without any additional electronics,
which makes it a great actuator for beginner robotics projects.
The AR-3606HB continuous rotation servo converts standard RC servo
position pulses into continuous rotation speed. The default rest point
is 1.5 ms, but this can be adjusted by using a small slotted screwdriver
to turn the middle-point positioner. Pulse widths above the rest point
result in counterclockwise rotation, with speed increasing as the pulse
width increases; pulse widths below the rest point result in clockwise
rotation, with speed increasing as the pulse width decreases.