FEETECH STS3215 7.4V 16kg.cm Serial Bus Smart Servo – 1:191 Gear Ratio (C044)

The FEETECH STS3215-C044 is a smart serial bus servo from the STS3215 family, designed for advanced robotic systems where conventional PWM servo control may be limiting.

It combines a high-ratio 1:191 gearbox with magnetic position sensing and serial bus communication, allowing multiple servos to be networked and individually addressed. The STS3215 platform supports position, speed and other operating feedback, making it particularly suitable for multi-joint robots and programmable mechanisms. FEETECH specifies the STS3215 platform for 360° position control as well as continuous/multi-turn operation.

Key Features

• Model: STS3215-C044
• Gear ratio: 1:191
• Nominal voltage class: 7.4V
• Smart serial bus servo
• TTL half-duplex serial communication
• Magnetic encoder position sensing
• Metal gearbox
• Programmable servo operation
• 360° position control capability
• Continuous/multi-turn operation support
• Individual servo ID addressing
• Feedback for parameters such as position, speed, voltage, current, temperature and load
• Suitable for daisy-chained multi-servo systems
• Protection features available on the STS3215 platform include overload and over-current protection.

STS3215 Platform Specifications

FEETECH lists the STS3215 at approximately 45.2 × 24.7 × 35 mm and around 55 g, with a 12-bit magnetic encoder and serial communication speeds from 38,400 bps to 1 Mbps.

Applications

• Robotic arms
• Humanoid robots
• Quadruped and walking robots
• Educational robotics
• Multi-axis mechanisms
• Pan-and-tilt systems
• Automated mechanisms
• Smart robotic joints
• Research and prototyping
• Serial bus servo networks

Important: The C044 1:191 gearing distinguishes this variant from other STS3215 versions, so specifications such as speed and torque should not automatically be copied from the C001 1:345 version.