Product Description
The SG90 Micro Servo Motor is a tiny, lightweight, and cost-effective actuator, popular among hobbyists and beginners for projects requiring precise, controlled movement.
The SG90 is a staple in DIY electronics due to its small size (weighing only 9 grams) and ease of use. It uses a standard Pulse Width Modulation (PWM) signal for control, allowing users to rotate it to a specific angle and hold that position. While its plastic gears are not as durable under heavy loads compared to metal-geared alternatives, its low cost makes it an accessible component for experimentation.
Key Features and Specifications
- Weight: 9g
- Dimensions: Approximately 23 x 12.2 x 29mm
- Operating Voltage Range: 4.8V to 6V DC
- Stall Torque (at 4.8V): Around 1.2 kg/cm (17.5 oz/in)
- Operating Speed (at 4.8V, no load): Approximately 0.12 seconds per 60 degrees
- Rotation Angle: Typically 180 degrees (90 degrees in each direction), or 360 continuous rotation (no stop)
- Control System: Pulse Width Modulation (PWM)
- Gear Type: Plastic gears
- Connectivity: 3-wire interface: Red (Power), Brown/Black (Ground), Orange/Yellow (Signal)
Potential Applications
The SG90's precision and compact size make it versatile for numerous small-scale projects:
- Robotics: Provides movement for joints in mini robotic arms or bipedal robots
- RC Vehicles: Used for steering mechanisms in remote-controlled cars and aircraft control surfaces
- Home Automation: Ideal for motorizing small mechanisms like automated pet feeders, window blinds, or smart mirrors
- Art and Interactive Installations: Used in kinetic sculptures and animatronics to create controlled, repetitive movements
- DIY Prototyping: A fundamental component for general DIY projects and educational STEM kits to add simple motion control