The MR-20115 Digital Serial Bus Servo Motor is a high-torque smart servo designed for robotics, embedded control, and motion automation. It features 360° absolute position control, a 12-bit magnetic encoder, metal gear transmission, and TTL half-duplex serial communication with configurable ID and baud rate. The servo also provides feedback for position, speed, load, voltage, current, and temperature, making it ideal for advanced robotic and mechatronic systems.
Key Features
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High-torque digital serial bus servo motor
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12-bit magnetic encoder with 4096 counts
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360° absolute position control
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TTL half-duplex asynchronous serial communication
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Configurable ID range: 0 to 253
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Configurable baud rate: 38,400 bps to 1 Mbps
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Built-in PID control algorithm
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Telemetry feedback for:
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Position
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Speed
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Load
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Voltage
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Current
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Temperature
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Protection features:
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Overload
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Overcurrent
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Overvoltage
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Overtemperature
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Durable metal gear transmission for robotic applications
Connector Pin
| Pin 1 | GND |
| Pin 2 | VCC |
| Pin 3 | SIG — TTL serial signal |
Communication Specifications
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Protocol: Half-duplex asynchronous serial
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Signal Level: TTL
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Frame Format: 8-bit, 1 stop bit, no parity
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Baud Rate: 38,400 bps to 1 Mbps
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ID Range: 0 to 253
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Control Algorithm: PID
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Available Feedback: Load, Position, Speed, Voltage, Current, Temperature
Mechanical Dimensions
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Approximate body length: 45.23 mm
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Width: 24.73 mm
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Side profile length: 36.5 mm
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Height dimension shown: 36.5 mm
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Output spline and horn dimensions are also provided in the datasheet drawings on the dimension pages.
Applications
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Robotic arms
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Humanoid robots
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Servo-driven joints
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Pan-tilt camera systems
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Embedded motion control projects
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Educational robotics
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Smart actuators
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Industrial automation prototypes
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Mechatronics research systems
Package Includes
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1x MR-20115 Digital Serial Bus Servo Motor
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Servo horn set
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Mounting screws and hardware
Frequently Asked Questions (FAQ)
1. What is the MR-20115 servo motor?
The MR-20115 is a digital serial bus smart servo motor designed for robotics and automation applications. It features a 12-bit magnetic encoder, 360° position control, and metal gears for precise and durable motion control.
2. What voltage does the MR-20115 servo require?
The servo operates with a recommended voltage range of 4.0V to 7.4V.
3. What communication protocol does this servo use?
The MR-20115 uses TTL half-duplex asynchronous serial communication, allowing multiple servos to be connected on the same bus and controlled through unique IDs.
4. What is the torque of this servo motor?
At 7.4V, the servo can deliver up to 19.5 kg·cm stall torque, making it suitable for robotics joints and mechanical actuators.
5. Can multiple servos be connected together?
Yes. The servo supports bus communication with configurable ID (0–253), allowing multiple servos to operate on the same communication line.
6. What feedback data can the servo provide?
The servo can report several parameters including:
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Position
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Speed
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Load
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Voltage
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Current
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Temperature
7. What is the resolution of the encoder?
The MR-20115 servo includes a 12-bit magnetic encoder with 4096 counts, providing precise position feedback.
8. Does the servo support continuous 360° rotation?
Yes. The servo supports 360° rotation with absolute position control, which is ideal for robotics and smart actuator applications.
