FEETECH Serial Bus Servo STS3215

FEETECH STS3215 Serial Bus Servo

Product Overview

This FEETECH STS3215 serial bus servo is a high-performance robotic actuator specially designed for SO-ARM100/101 robotic arms. It features full-dimensional real-time feedback, metal gear transmission, magnetic encoding sensor, and standard TTL serial bus communication, with multiple intelligent protection mechanisms built-in. It natively supports ACT, Smolvla, Pi0, Pi0.5, GR00T N1.5 robot model training, making it ideal for robotic development, embodied intelligence research, and educational robotics scenarios. Official VAT invoice is available for all orders.

Key Advantages

• Native Compatibility with SO-ARM Series Robotic Arms

  Perfectly adapted to SO-ARM100 and SO-ARM101 robotic arms, works out of the box after simple configuration, saves development time for robotic project integration.

• Full-Dimensional Real-Time Feedback

  Supports real-time feedback of position, speed, torque, temperature, and voltage data, providing reliable data support for closed-loop control and precise motion development.

• High-Reliability Hardware Design

  Adopts high-precision metal gear transmission structure and non-contact magnetic encoding sensor, with high durability, low noise, stable operation performance, suitable for long-term continuous operation scenarios.

• Supports Mainstream Robot Model Training

  Fully compatible with ACT, Smolvla, Pi0, Pi0.5, GR00T N1.5 and other mainstream robotic large model training frameworks, meeting the needs of embodied intelligence model training and development scenarios.

• Multiple Intelligent Protection Mechanisms

  Built-in overvoltage, overcurrent, overheating, overload and other intelligent protection functions, effectively protecting the servo and connected equipment from damage, improving the stability of the entire robotic system.

• Standard TTL Serial Bus Communication

  Adopts standard TTL serial bus protocol, supports multi-servo cascade connection, simplifies system wiring and reduces development difficulty.

Hardware Overview

Core Features

• Transmission structure: High-precision metal gear
• Sensor: 12-bit non-contact magnetic encoder
• Communication: TTL serial bus
• Protection: Overvoltage, overcurrent, overheating, overload protection
• Feedback: Real-time position, speed, torque, temperature, voltage data output

Compatible Platforms

• SO-ARM100/101 robotic arms
• Other serial bus servo compatible robotic platforms



Technical Specifications

Product Name	FEETECH STS3215 Serial Bus Servo
Model	STS3215
Transmission Structure	Metal gear
Encoder Type	Magnetic encoding
Communication Protocol	TTL serial bus
Feedback Data	Position, speed, torque, temperature, voltage
Protection Functions	Overvoltage, overcurrent, overheating, overload protection
Compatible Robotic Platforms	SO-ARM100/101 robotic arms

Technical Support

For detailed technical documentation on software setup and code implementation, please refer to our official Wiki: Access Here. Community technical support is also available to help you accelerate project implementation.

Part List

• Feetech ST3215-C001 Servo 7.4V 1:345 Gear Ratio
• Feetech ST3215-C044 Servo 7.4V 1:191 Gear Ratio
• Feetech ST3215-C046 Servo 7.4V 1:147 Gear Ratio
• Feetech ST3215-C018 12V 30Kg Servo