The MG90 Metal Gear Micro Servo is a small but powerful actuator designed to bring precise movement to compact electronics projects. This servo is the metal-gear counterpart to the common plastic-gear SG90, offering significantly enhanced durability and performance. It is a fundamental component for hobbyists, students, and professional engineers working on small-scale automated systems where reliable torque in a minimal footprint is critical.Primarily used for positioning, the MG90 converts electrical pulses into a specific angular position, typically ranging from 0 to 180 degrees. Its high torque-to-size ratio makes it an excellent choice for actuating control surfaces on remote-controlled (RC) airplanes, steering small RC cars, animating joints in micro-robotics, or controlling camera pan-and-tilt mechanisms in DIY drone projects.The defining feature of the MG90 is its internal geartrain, constructed from durable metal rather than plastic. This upgrade allows the servo to handle higher loads and impact forces without stripping gears, making your projects more robust and longer-lasting. Despite its rugged internal composition, it maintains the same standard micro-servo dimensions and mounting layout as its counterpart, ensuring broad compatibility. The MG90 operates on a standard 4.8V to 6V power supply, making it directly compatible with popular microcontrollers like Arduino, Raspberry Pi, and standard RC receivers.Included with the servo are several interchangeable nylon servo horns (arms) and mounting hardware, allowing for easy integration into diverse mechanical setups. For anyone needing dependable, precise rotational control in a tiny package, the MG90 is the go-to, heavy-duty solution.4. Key FeaturesDurable Metal Geartrain: Metal gears resist wear and damage, providing superior lifespan and reliability under load compared to plastic alternatives.High Torque for Micro Size: Delivers impressive stall torque (approximately 2.2 kg·cm at 6V) despite its lightweight (13.4g) footprint.Standard Compatibility: Plugs directly into common microcontrollers (Arduino, ESP32) and standard RC receiver channels.Precise 180° Rotation: Provides accurate angular positioning for intricate control over control surfaces, robotic arms, and mechanisms.Robust Actuation: The upgrade to metal makes it suitable for demanding applications like small RC vehicles and compact automated fixtures.Easy Installation: Follows the standard micro-servo mounting pattern and includes multiple interchangeable horns (arms) and hardware.Efficient Operation: Runs efficiently on standard logic-level voltages (4.8V–6V) commonly available from batteries and power modules.Compact and Versatile: Ideal for integration into projects where space is at a premium without sacrificing necessary power.5. Technical SpecificationsDetailSpecificationProduct NameMG90 Metal Gear Micro ServoModelMG90Part NumberMG90-ServoDimensions~22.8 mm x 12.2 mm x 28.5 mm (excluding leads and horns)Weight~13.4 gramsVoltage4.8V to 6.0V (DC)CurrentIdle: Not officially specified; Operating: ~200-300mA; Stall: ~1A (varies by load)MaterialMetal Gears, Plastic CasingColorDark Gray Casing, Brass/Steel Metal Gears, Multi-color Lead (Brown, Red, Orange)CompatibilityArduino, Raspberry Pi, ESP32, RC ReceiversPackage Contents1 x MG90 Servo, 3 x Servo Horns, 1 x Mounting Screws SetStall Torque~1.8 kg·cm (4.8V), ~2.2 kg·cm (6.0V)Operating Speed~0.11 s/60° (4.8V), ~0.10 s/60° (6.0V)Rotation Angle~180 degrees (PWM controlled)