// 01

Description

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

// 02

Specifications

Servo MG90S metal gear

Rotation 360° continuous

Supply Voltage 4.8-6 V

Control PWM speed/direction

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// From Robotics