SG90 9g Micro Servo — Lightweight Servo Motor

The TowerPro SG90 9g Micro Servo is one of the most popular and affordable servo motors used in hobby electronics, robotics, and small RC applications. Compact, lightweight, and easy to interface, this servo is ideal for projects where precise angular movement is required without adding significant weight.

This 9-gram micro servo offers approximately 180 degrees of rotation and delivers reliable torque suitable for small mechanisms such as robotic arms, pan-tilt camera mounts, RC airplanes, RC cars, and educational robotics kits. Its small size makes it perfect for space-constrained designs while still providing accurate positioning and smooth movement.

Although many SG90 servos available in the market are third-party compatible versions rather than original branded units, they offer excellent performance for their price. These servos are cost-effective and serve well in hobby and learning applications. For users seeking premium-grade alternatives, higher-end servos such as Emax or Orange servos may be considered.

The SG90 operates typically at 4.8V to 6V and can be directly controlled using PWM signals from platforms like Arduino, Raspberry Pi, AVR, PIC, ARM-based controllers, and other microcontrollers.

Wire Description
Red wire connects to positive supply (VCC).
Brown wire connects to ground (GND).
Orange wire is the signal input (PWM control).

The servo is supplied with a full set of servo horns, allowing flexible mechanical connections depending on the project requirement. The included horns typically include single-arm, double-arm, and four-arm configurations along with mounting screws.

Features
The servo provides high resolution and accurate angular positioning, making it suitable for precision-based applications. It offers fast control response with stable and consistent torque throughout the travel range. The motor also delivers good holding power for its size, ensuring steady positioning under moderate load conditions.

Package Includes
1 x SG90 9g Mini Servo Motor with attached cable
1 x Set of servo horns (single-arm, double-arm, four-arm)
1 x Set of mounting screws

The TowerPro SG90 9g Micro Servo remains a trusted and widely used solution for beginners, students, and makers who need an affordable and dependable servo motor for robotics and DIY electronics projects.