Feetech FS5103R 6V 3kg.cm 360° Continuous Rotation Servo

The Feetech FS5103R is a standard-size servo built for continuous rotation: instead of holding an angle, the output turns endlessly, with the pulse width setting direction and speed. It is a simple geared drive for wheeled robots, turntables, conveyors and slow winches, and mounts in any standard 40 x 20 mm servo bay.

Key features

• 3.2 kg.cm peak stall torque and 1.0 kg.cm rated torque at 6V
• Accepts a 4-8.4V supply
• Turns anticlockwise as the pulse rises from 1500 towards 1800 µs and clockwise below the stop point
• Ball-bearing output with a plastic gear train and a 25T (5.9 mm) spline for standard-size horns
• Draws 210 mA at no load and up to 1.1 A at stall (6V), so size the BEC for every servo on it

Specifications

• Operating voltage: 4-8.4V
• Stall torque: 3.2 kg.cm at 6V
• Rated torque: 1.0 kg.cm at 6V
• Current at 6V: 6 mA idle, 210 mA no load, 1.1 A stall
• Rotation: 360° continuous, anticlockwise at 1500-1800 µs
• Gears: plastic
• Bearings: ball bearings
• Output spline: 25T, 5.9 mm
• Lead length: 300 mm
• Dimensions: 40.15 x 20.15 x 37.2 mm
• Weight: 41.5 g
• Operating temperature: -15 to 70°C

For a two-wheel differential-drive robot, reverse one servo's direction in code and trim each neutral pulse if a wheel creeps at stop.