2 Pack FS90R Continuous Rotation Servo, Mini Size, 9g Weight, 32.6mm x 12.5mm x 27.3mm

2 Pack. The FS90R is a special servo made for continuous rotation. It can make full revolutions forward or backward, which makes it great for projects such as driving wheels on a small robot.

The FS90R servo includes an adjustment potentiometer to calibrate the middle-point (stopped) setting. Calibrate this setting by sending a 1.5ms (1500µs) pulse signal (position "90" when used with the Arduino Servo library), then slowly turn the middle-point adjustment potentiometer until the servo stops rotating. Access the middle-point adjustment potentiometer by inserting a small screwdriver into the hole in the bottom of the servo.

The servo's cable has a standard JR-style connector on the end.

Each servo includes:

1 - straight single ended servo horn
1 - straight double ended servo horn
1 - winged straight double ended servo horn
1 - four-pointed star servo horn
1 - round servo horn
1 - servo horn screw
2 - FS90 servo mounting screws

Stall Torque:
@4.8V: 1.3 kg/cm (18.09 oz/in)
@6.0V: 1.5 kg/cm (20.86 oz/in)
Max Speed:
@4.8V: 0.12sec/60°
@6.0V: 0.12sec/60°
Idle Current:
@4.8V: 5 mA
@6.0V: 6 mA
No Load Running Current:
@4.8V: 100 mA
@6.0V: 120 mA
Stall Current:
@4.8V: 700 mA
@6.0V: 800 mA
Operating Voltage Range: 4.8V to 6V
Pulse Width Range: 900 to 2100 µs
Limit Angle: 120° (900 to 2100 µs)
Dead Band Width: 10 µs
Stop position: 1500 (±5) µs
CW Rotation Signal Range: 900 to 1500 µs
CCW Rotation Signal Range: 1500 to 2100 µs
Internal Gears: Plastic
Cable Length: 20 cm (7.9")
Dimensions:
Length: 32.6 mm (1.28")
Width: 12.5 mm (0.49")
Height: 27.3 mm (1.08")
Weight (of servo itself): 9 g (0.32 oz)
Weight (including horns and screws): 15.1 g (0.53 oz)