MG90S Micro Servo Continuous Rotation 360 Degree (Full Metal Gear )
The MG90S Micro Servo Continuous Rotation 360° (Full Metal Gear) is a compact and powerful servo motor designed for small-scale robotics and automation projects requiring continuous motion. Unlike standard servo motors that rotate only 180°, this version is modified to rotate freely in both directions, making it ideal for applications such as robotic wheels, camera sliders, conveyor systems, and pan-tilt mechanisms.
Built with high-quality metal gears, the MG90S offers durability and wear resistance, ensuring a longer operational life compared to servos with plastic gears. Its full metal gear construction also allows it to handle more torque and stress without stripping or failing under moderate loads. Despite its small size, it provides sufficient torque for driving lightweight robotic platforms and other moving parts.
The MG90S operates on a standard 4.8V to 6V power supply and is compatible with popular microcontrollers like Arduino, Raspberry Pi, and others through simple PWM (Pulse Width Modulation) signals. The direction and speed of rotation are controlled by varying the pulse width — typically, 1.5 ms stops the motor, pulses less than 1.5 ms rotate it in one direction, and pulses above 1.5 ms rotate it in the opposite direction.
This servo comes with a standard 3-pin connector (Signal, VCC, GND) and is easy to integrate into a variety of electronics projects. Its compact form factor makes it especially suitable for space-constrained builds like mini-robots, remote-controlled toys, or animatronics.
Overall, the MG90S 360° continuous rotation servo combines durability, versatility, and ease of use, making it an excellent choice for hobbyists, students, and developers looking to add controlled motion to their creations in a small package.
Features:
- Full 360° Motion: Unlike standard servos, this one rotates continuously — perfect for driving wheels or conveyor belts.
- Bidirectional Speed Control: You can control both the direction and speed using simple PWM signals.
- Compact Design: Its small size fits easily into tight spaces in mini robots, RC vehicles, and hobby projects.
- Durable Metal Gears: With full metal gearing, it handles stress better than plastic servos and lasts longer.
- Ideal for Mobility: Great for adding rotation to small robots, sliders, or camera systems.
- Easy to Use with Arduino & Others: Works seamlessly with platforms like Arduino, Raspberry Pi, and ESP32 — plug and code.
- Smooth, Quiet Operation: Delivers low-vibration, consistent performance — ideal for precision projects.
- DIY-Friendly: Beginner-friendly and supported by countless tutorials and project examples.
- Great Value for Cost: Offers high performance in a low-cost, accessible package.
- Included Accessories: Usually comes with servo horns and screws for quick integration into your builds.
Specifications:
| Specification | Details |
|---|---|
| Model: | MG90S Continuous Rotation |
| Rotation Type: | 360° Continuous |
| Gear Material: | Full Metal Gear |
| Operating Voltage: | 4.8V – 6.0V |
| Torque 4.8V: | ~1.8 kg·cm |
| Torque 6.0V: | ~2.2 kg·cm |
| Speed 4.8V: | ~0.1 sec/60° (approximate equivalent) |
| Control Signal | PWM (Pulse Width Modulation) |
| Neutral Signal (Stop): | ~1.5 ms |
| Rotation Direction: | CW or CCW (based on PWM width) |
| PWM Range: | ~1.0 ms to 2.0 ms |
| Connector Type: | 3-pin (Signal, VCC, GND) |
| Wire Colors: | Orange (Signal), Red (VCC), Brown (GND) |
| Dimensions (L×W×H): | 22.8 × 12.2 × 28.5 mm |
| Weight: | ~13.5 grams |
Wire Connections:
| Wire Color | Connection | Function |
|---|---|---|
| Red | VCC (Power Supply) | Connect to +5V to +6V (Typically 5V) |
| Brown | GND (Ground) | Connect to Ground (0V) |
| Orange | Signal (PWM Input) | Connect to PWM signal pin on microcontroller (e.g., Arduino, RC receiver) |
PWM Control Table:
| PWM Pulse Width | Servo Action | Direction |
|---|---|---|
| ~1.0 ms | Full speed clockwise (CW) | Clockwise |
| ~1.3 ms | Slow speed clockwise (CW) | Clockwise |
| ~1.5 ms | Stop / Neutral (no motion) | — |
| ~1.7 ms | Slow speed counter-clockwise (CCW) | Counter-clockwise |
| ~2.0 ms | Full speed counter-clockwise (CCW) | Counter-clockwise |
Applications:
- Miniature Mobile Robots
- Line-Following Robots
- Obstacle-Avoidance Vehicles
- Pan/Tilt Camera Systems
- Conveyor Belts
- Robotic Arms (Rotational Base)
- RC Cars and Boats (Drive Motors)
- Art Installations / Kinetic Sculptures
- Educational Robotics Kits
- DIY Automation Projects
Package Included:
- 1x MG90S Micro Servo motor.
- 2x Arms/horns for various interface applications.
- 3x Screws for mounting.
Datasheet:
MG90S Micro Servo Continuous Rotation 360 Degree (Full Metal Gear )
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