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The SG90 9g 360-degree continuous rotation micro servo motor is a compact, lightweight servo for robotics, Arduino projects and small motion-control applications. It gives full 360-degree rotation in both directions from PWM signals, which suits wheels, platforms and mechanisms.
The specification list identifies it as a TowerPro servo of the SG series, with a torque rating of 1.2kg-cm, an operating voltage of 3.0 to 7.2V DC and an operating speed of 0.12 seconds per 60 degrees at 4.8V.
The listed features include high resolution, accurate positioning, fast control response, constant torque throughout the servo's travel range and excellent holding power.
Continuous 360 degree rotation: in both directions using PWM signals.
High resolution: smooth speed control.
Accurate positioning: predictable control.
Fast control response: quick reaction to commands.
Constant torque: throughout the travel range.
Small and light: 9g class micro servo.
A standard servo turns to an angle and holds it. A continuous rotation servo has its position feedback disabled, so the pulse width sets the speed and direction instead: about 1.5 milliseconds stops the motor, shorter pulses turn it one way and longer pulses turn it the other way. This makes it behave like a small geared motor that is easy to drive from a microcontroller.
Because there is no position feedback, the stop point can drift. Most continuous servos have a small trim potentiometer to set the centre; adjust it with a 1.5 millisecond signal applied until the shaft stops turning.
Always power a servo from a supply that can deliver its peak current, not from a weak receiver port, and keep the linkage free so the servo never strains against a mechanical stop. A stalled servo draws a large current and can overheat within seconds.
Wheels for small robots and rovers
Rotating platforms and turntables
Arduino projects that need a geared motor
Winches and sliding mechanisms
Teaching robotics
The listing is for the 360-degree continuous rotation version, so it cannot be used to hold an angle. The operating voltage is 3.0 to 7.2V DC and the torque rating is 1.2kg-cm.
The package contains one SG90 continuous rotation servo.
Item type: TowerPro servo motor
Series: SG
Rotation: 360 degrees (continuous)
Torque: 1.2kg-cm
Model: SG90
Operating voltage: 3.0-7.2V DC
Operating speed: 0.12s/60 degrees at 4.8V
1 x SG90 continuous rotation 360 degree servo motor
Robotics beginners and makers who want a small geared motor that is easy to control from PWM.
Continuously through 360 degrees in both directions.
1.2kg-cm.
3.0 to 7.2V DC.
By the PWM pulse width.
No, it is a continuous rotation version.
One SG90 continuous rotation servo.
| Brand | TowerPro |
|---|---|
| Operating Voltage | 3.0-7.2V DC |
| Rotation Angle | 360 degrees (continuous) |
| Speed | 0.12 s/60 degrees at 4.8V |
| Torque | 1.2 kg-cm |
| Selling unit | PCS |
