The FS90R is a micro servo that has been built by FEETECH specifically for continuous rotation offering an inexpensive and easy way to get your small turret spinning or miniature robot moving especially when paired with our 60×8mm wheels designed specifically for this servo. This servo can work with both 5 V and 3.3 V servo signals. Key specs at 6 V: 130 RPM (noload) 21 ozin (1.5 kgcm) 9 g CCW rotation for pulse widths above the rest point. 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 miniature actuator for beginner robotics projects; just throw on a pair of wheels and your robot is ready to roll! The FS90R 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 screwdriver to turn the middlepoint adjustment potentiometer. 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. The servo has a 10″ (250 mm) lead that is terminated with a JRstyle connector and includes additional servo horns and mounting hardware.
