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MG90S Micro Servo Motor, 360° Continuous Rotation Plastic Gear, Analog RC Servomotor, 4.8V–6V PWM Control for Arduino ESP32 Robot Car & DIY Projects, Includes Servo Horns + Mounting Screws
The MG90S Micro Servo Motor (360° Continuous Rotation) is a compact, hobby-friendly analog RC servomotor designed for robotics, RC models, and DIY automation projects that need controlled continuous spinning in a small footprint.
- 1× MG90S micro servo motor
- Multiple servo horns/arms
- Mounting screws (as shown)
The MG90S Micro Servo Motor (360° Continuous Rotation) is a compact, hobby-friendly analog RC servomotor designed for robotics, RC models, and DIY automation projects that need controlled continuous spinning in a small footprint. This version is continuous rotation, meaning it behaves like a tiny geared motor driven by a standard servo PWM signal—ideal for robot wheels, rotating platforms, feeders, mini conveyors, and lightweight drive mechanisms.
How Continuous Rotation Works (Speed + Direction)
Unlike positional servos (that move to a fixed angle), a continuous rotation servo uses PWM to control rotation direction and speed:
- Neutral / Stop: ~1.5 ms (1500 µs) pulse width
- Below neutral: rotates one direction (speed increases farther from neutral)
- Above neutral: rotates the other direction (speed increases farther from neutral)
This makes it very easy to control using common servo libraries on Arduino/ESP32 and RC receivers.
Wiring (Standard 3-Wire Servo)
Typical wiring colors:
- Brown / Black → GND
- Red → VCC (4.8V–6.0V DC)
- Orange / Yellow → PWM Signal
Power Notes (Important for Stability)
Servos can draw higher current during startup, load changes, or stalls. For best results:
- Use a separate regulated 5V supply when possible (especially for multiple servos)
- Always connect grounds together (servo GND ↔ controller GND)
- Avoid powering heavy servo loads directly from weak USB ports or small onboard regulators
Key Benefits
- 360° continuous rotation for drive and rotation mechanisms
- Micro size for compact robots and tight mechanical assemblies
- Analog RC PWM control compatible with Arduino, ESP32, and standard RC systems
- Plastic gear design keeps weight low for educational and DIY builds
- Accessories included for easy mounting and quick assembly
Typical Specifications (may vary slightly by batch)
| Parameter | Typical Value |
|---|---|
| Model | MG90S Micro Servo (Analog) |
| Rotation Type | Continuous Rotation (360°) |
| Operating Voltage | 4.8V–6.0V DC |
| Control Signal | PWM (typical ~50 Hz, ~1.0–2.0 ms) |
| Connector | 3-pin RC servo plug |
| Use Cases | Robot car wheels, turntables, feeders, DIY automation |
What’s Included
- 1× MG90S micro servo motor
- Multiple servo horns/arms
- Mounting screws (as shown)
Common Applications
- Arduino/ESP32 robot car wheel drive
- Rotating displays and turntables
- Small dispensers, feeders, conveyor prototypes
- STEM education kits and hobby robotics
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