SG90 Servo Motor – 9g Micro Servo for Arduino & Robotics

Introduction: Tiny Size, Big Performance

The SG90 Servo Motor is a legendary component in the world of DIY electronics. Known for its compact size and surprising torque, this micro servo is the go-to solution for makers who need to control movement with high precision without adding significant weight to their projects. From Virtual Pathshala, we provide genuine TowerPro-standard SG90 motors to ensure your educational and hobbyist builds perform consistently every time.

High Precision 180-Degree Rotation

Precision is what separates a simple toy from a functional robot. The SG90 Servo Motor offers a full 180-degree rotation (90 degrees in each direction).

• Position Control: Unlike standard DC motors that spin continuously, the SG90 allows you to command it to move to a specific angle (e.g., “move to 45 degrees”) and stay there.

• Internal Feedback: It contains an internal potentiometer and a control circuit that constantly monitors the position of the output shaft, ensuring it reaches and maintains the desired angle even under moderate load.

Lightweight and Durable Design

At just 9 grams, the SG90 is engineered for applications where every milligram counts.

• Nylon Gears: The internal gear train is made of high-quality nylon, which provides a balance between weight reduction and structural integrity.

• Tough Plastic Casing: The semi-transparent blue casing allows students to see the internal mechanics, making it an excellent teaching tool for understanding gear ratios and mechanical movement.

• Easy Mounting: Each motor comes with a set of three different “horns” (arms) and mounting screws, allowing you to easily attach it to various surfaces or mechanical linkages.

Universal Compatibility with Microcontrollers

One reason the SG90 Servo Motor is so popular at Virtual Pathshala is its ease of integration.

1. Standard 3-Pin Interface: It uses a standard 3-wire connector—Brown (GND), Red (VCC), and Orange (Signal). This makes it literally “plug-and-play” with most sensor shields.

2. Wide Voltage Range: It operates efficiently between 4.8V and 6V, meaning it can be powered directly from an Arduino’s 5V pin for simple tests or a dedicated battery pack for more power-intensive robots.

3. PWM Control: It uses standard Pulse Width Modulation (PWM) signals, which are supported by almost every development board available today.

Why Choose SG90 From Virtual Pathshala?

At Virtual Pathshala, we pride ourselves on providing verified hardware that works straight out of the box.

• Quality Controlled: We test our SG90 batches to ensure they don’t have the “jitter” issues common in lower-quality clones.

• Ready-to-Use Code: This motor is a staple in our Level 1 Robotics curriculum. We provide simple Arduino sketches to help you calibrate your first servo in minutes.

• Community Driven: Use this motor in projects showcased within our WhatsApp community, and get feedback from 500+ teachers and students.

Ideal Applications for the SG90:

• Robotic Arms: Perfect for the “fingers” or “wrist” movements of a 4-DOF or 6-DOF robotic arm.

• RC Aircraft: The standard choice for controlling ailerons, elevators, and rudders in small foam or balsa planes.

• Humanoid Robots: Used in the joints of walking robots due to its high torque-to-weight ratio.

• Smart Home DIY: Create automated door locks, camera pan-tilt systems, or automatic pet feeders.

Technical Specifications:

• Weight: 9 grams

• Dimensions: 22.2 x 11.8 x 31 mm approx.

• Stall Torque: 1.8 kgf·cm (at 4.8V)

• Operating Speed: 0.1 s/60 degree (at 4.8V)

• Operating Voltage: 4.8V to 6.0V

• Dead Band Width: 10 µs

• Temperature Range: 0ºC – 55ºC

Pro-Tips for Long Life:

To get the best results from your SG90 Servo Motor, avoid “stalling” the motor (forcing it to move against an immovable object), as this can strip the nylon gears. If you are building a heavy-duty robot, we recommend checking out our MG995 Metal Gear Servos from Virtual Pathshala for higher torque requirements. For more advanced control techniques, you can explore the Arduino Servo Library Documentation.