SG90 Micro Servo Motor (180°, 1.6kg·cm, Plastic Gears)

Overview

The SG90 Micro Servo Motor is a compact, lightweight, and cost-effective servo motor that delivers precise 180° rotation for a wide range of hobbyist and educational projects. Weighing just 9g, it packs a punch with up to 1.6kg·cm of stall torque, making it ideal for small robotics arms, pan-tilt mechanisms, RC car steering, and countless other applications. Its standard PWM control interface ensures seamless integration with popular microcontrollers like Arduino, ESP32, ESP8266, STM32, and Raspberry Pi.

Key Features

• Compact & Lightweight: Weighs only 9g, perfect for space-constrained and weight-sensitive projects.
• High Torque-to-Weight Ratio: Delivers up to 1.6kg·cm of stall torque, ideal for small mechanical tasks.
• Precise 180° Positioning: Controlled via standard 50Hz PWM signal, allowing accurate angular control.
• Wide Voltage Range: Operates from 4.8V to 6V DC, compatible with common power supplies and batteries.
• Durable Plastic Gears: Provides reliable performance and quiet operation for hobbyist use.
• Universal Compatibility: Works with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other microcontrollers.

Technical Specifications

• Model: SG90
• Weight: 9g
• Stall Torque: Up to 1.6kg·cm (at 4.8V)
• Operating Voltage: 4.8V–6V DC
• Control Signal: PWM (50Hz, typical pulse width 500–2500µs)
• Rotation Range: 180° (±90°)
• Gear Material: Plastic
• Connector: 3-pin (Signal, VCC, GND) with standard 0.1" pitch

Applications & Use Cases

• Robotics: Build robotic arms, grippers, and walking robots.
• RC Models: Steering and throttle control for RC cars, boats, and aircraft.
• Pan-Tilt Mechanisms: Camera gimbals, sensor positioning, and tracking systems.
• Automation: Small actuators for home automation and model-based projects.
• Education: Perfect for STEM learning, university labs, and maker workshops.

What's Included

• 1x SG90 Micro Servo Motor
• 3x Servo horns (cross, disc, and single-arm)
• 1x Set of mounting screws (Phillips head)

Compatibility

• Microcontrollers: Arduino (Uno, Nano, Mega), ESP32, ESP8266, Raspberry Pi (via GPIO), STM32, PIC, and any platform supporting standard PWM.
• Power: Can be powered directly from 5V microcontroller pins for basic loads; for higher torque applications, use an external 5V–6V power supply.
• Libraries: Works with built-in Arduino Servo library, ESP32 ServoESP32 library, and Raspberry Pi GPIO PWM.

MOKWN Recommendation

The SG90 is the go-to servo for makers starting their journey into motion control. Its unbeatable price-to-performance ratio and universal compatibility make it a staple in any electronics toolkit. Whether you're a student building your first robot or a professional prototyping a mechanism, the SG90 delivers reliable, precise movement. We recommend pairing it with an external power supply for continuous or high-torque applications to avoid overloading your microcontroller's voltage regulator.