The MG90S is a micro servo motor equipped with metal gears, making it sturdy and reliable. Here are the key specifications and features of this versatile little motor:

Features:

1. Operating Voltage:
• Typically operates between 4.8V to 6V, with 5V being the common choice¹².
2. Stall Torque:
• At 4.8V: 1.8 kg/cm
• At 6V: 2.2 kg/cm¹.
3. Operating Speed:
• Rotates at 0.1 seconds per 60 degrees (at 4.8V)¹.
4. Gear Type:
• Features metal gears for durability and precision¹.
5. Rotation Range:
• Can rotate from 0° to 180°¹.
6. Weight:
• Lightweight, weighing approximately 13.4 grams¹.
7. Dimensions:
• Compact size: 12mm x 32.5mm x 32.5mm².
8. Wiring:
• Brown wire: Ground connection
• Red wire: Powers the motor (typically +5V)
• Orange wire: Receives PWM signal for motor control¹.

Applications:

• Ideal for RC airplanes, quadcopters, and robotic arms¹.
• Can be used in various hobby projects that require precise movement and torque.

How to Use MG90S:

1. Power: Connect the Red and Brown wires to +5V and ground, respectively.
2. Control: Send PWM signals to the Orange wire to control the motor’s position.
3. Use a PWM generator (e.g., 555 Timer, Arduino, Raspberry Pi) to create the necessary signals.
4. Ensure the PWM frequency is 50Hz (period of 20ms) for proper operation¹.

Remember, the MG90S may be small, but its metal gears and reliable performance make it a valuable addition to your projects!