Products / Electrical Components / Servo / MMRC-MG90S
MATRIX Micro Servo with metal gear box
SKU#:
MMRC-MG90S
High-quality construction component for robotics and engineering projects.
*SKU with -BK slug Includes bracket and steering wheel screws
Overview
RC (Radio Control Servo Motor) is a motor for precise angle control, not continuous rotation. In the Mini R4, this is used in the arms, joints, steering, camera mounts, etc.
Features
• Controlled via PWM to hold specific angles (e.g., 0-180 degrees)
• Internal closed-loop system (with motor, gears, position sensor, controller)
• Can resist external forces to hold position
Applications
• Robotic arms
• Wheel steering
• Grippers
• Pan-tilt mechanisms
• Biomechanical robots (e.g., insect legs)
• Rudders on model planes/boats
Electrical Characteristics

Note: Specs above are based on 6V operation. At 5V (Mini R4 output), values will be slightly lower.
Important notes:
• Voltage compatibility:
This servo motor operates within a voltage range of 4.8V to 6.0V, making it fully compatible with the 5V power supply provided by the MATRIX Mini R4 servo motor interface.
• Current considerations:
The stall current of this servo motor is approximately 0.9A (900mA). Each servo motor port on the Mini R4 can supply up to 1A, which is sufficient for a single motor. However, when driving multiple servos under heavy load simultaneously, it is important to ensure that the total output capacity of the external power supply is adequate.
• Torque and speed:
The torque and speed values in the table above are measured at 6.0V. When powered by the Mini R4’s 5V output, the actual torque and speed will be slightly lower, which is expected and normal.
Pinout Definition
RC servo motors usually use a standard 3-pin connector to connect the controller, which includes power, ground, and a control signal.


