{"product_id":"feetech-st3215-c001-c044-servo","title":"Feetech ST3215 C001 C044 Servo","description":"\u003ch2\u003eDESCRIPTION\u003c\/h2\u003e\n\u003cp\u003eThe Feetech ST3215 is a professional-grade, high-torque smart servo designed for advanced robotics applications. Operating on a Serial Bus communication protocol, this servo allows for the daisy-chaining of multiple units, significantly reducing wiring complexity in multi-axis systems like humanoid robots, hexapods, and robotic arms. This listing covers two gearbox variants — the C001 (1:345 gear ratio) and the C044 (1:191 gear ratio) — which share the same smart electronics, 12-bit magnetic encoder, and TTL serial bus interface, and differ only in gearing, torque, and speed.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Smart Features\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional PWM servos, the ST3215 functions as a smart node within a network.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaisy-Chain Topology\u003c\/strong\u003e: Connect up to 253 servos in a single line, utilizing only one data pin from your controller (Arduino, Raspberry Pi, or ESP32).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgrammable Protection\u003c\/strong\u003e: Built-in safeguards for over-temperature, over-voltage, and stall protection to prevent hardware failure during high-stress maneuvers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-Time Telemetry\u003c\/strong\u003e: Monitor the internal state of each joint in real-time, enabling closed-loop control and predictive maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIY-Friendly Mounting\u003c\/strong\u003e: Features a standard 25T spline and multiple mounting points compatible with standard brackets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing a Variant\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eST3215-C001 (1:345)\u003c\/strong\u003e: Higher gear reduction for maximum holding torque at low speed. Best for humanoid leg joints and static load-holding applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eST3215-C044 (1:191)\u003c\/strong\u003e: Lower gear reduction for faster motion with strong torque. The reference servo for the LeRobot SO-ARM101 robotic arm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eAPPLICATIONS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumanoid Robotics\u003c\/strong\u003e: Ideal for hip, knee, and ankle joints requiring high holding torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuadruped Robots\u003c\/strong\u003e: Precision movement and shock resistance for robotic \"dogs.\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotic Arms\u003c\/strong\u003e: The C044 is the reference servo for the LeRobot SO-ARM101, well-suited for accurate, repeatable joint motion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Automation\u003c\/strong\u003e: Small-scale pick-and-place machines and grippers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEducational Platforms\u003c\/strong\u003e: A cost-effective alternative to high-end industrial servos for university-level mechatronics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eTECHNICAL DETAILS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: 6V - 8.4V (rated 7.4V)\u003c\/li\u003e\n\u003cli\u003eEncoder Type: Integrated 12-bit magnetic encoder for absolute position feedback without physical wear\u003c\/li\u003e\n\u003cli\u003eCommunication: TTL Serial Bus (up to 1Mbps) allowing for bi-directional feedback on temperature, load, speed, and voltage\u003c\/li\u003e\n\u003cli\u003eGear Train: Hardened steel gears paired with a robust aluminum alloy middle case for superior heat dissipation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eST3125-C001\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGear Ratio: 1:345\u003c\/li\u003e\n\u003cli\u003eTorque: 16.5kg.cm (6.0V) \/ 19.5kg.cm (7.4V)\u003c\/li\u003e\n\u003cli\u003eSpeed: 0.238s\/60° (6.0V) \/ 0.192s\/60° (7.4V)\u003c\/li\u003e\n\u003cli\u003ePrimary Use: High-torque holding joints\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eST3125-C044\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGear Ratio: 1:191\u003c\/li\u003e\n\u003cli\u003eTorque: ~27.4 kg.cm stall \/ 9 kg.cm rated (7.4V)\u003c\/li\u003e\n\u003cli\u003eSpeed: 0.137s\/60° (6.0V) \/ 0.116s\/60° (7.4V)\u003c\/li\u003e\n\u003cli\u003ePrimary Use: High-torque holding joints\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eSHIPPING LIST\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x ST3215-Servo\u003c\/li\u003e\n\u003cli\u003e2x Servo Horn\u003c\/li\u003e\n\u003cli\u003e18x Screw\u003c\/li\u003e\n\u003cli\u003e1x JST Wire\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TBO","offers":[{"title":"ST3215-C001","offer_id":54154123182393,"sku":"MOT-SER-008","price":35.0,"currency_code":"SGD","in_stock":true},{"title":"ST3215-C044","offer_id":54154123215161,"sku":"MOT-SER-009","price":35.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/5369\/6313\/files\/Feetech-ST3215-C001-Servo-1.jpg?v=1767683461","url":"https:\/\/kuriosity.sg\/products\/feetech-st3215-c001-c044-servo","provider":"Kuriosity","version":"1.0","type":"link"}