Product Description
h2>Feetech STS3215 360° Magnetic Encoder Servo for SO-ARM101
Product Description
The Feetech STS3215 is a high-precision 360-degree servo with a magnetic absolute encoder. Designed for integration into SO-ARM101 robotic arms, it enables continuous rotation with stable feedback over the entire range.
Thanks to the built-in magnetic encoder, the servo can provide precise position data without dead zones, making it particularly suitable for applications in automation, robotics, and mechatronics. The full metal gear ensures high durability and stability in industrial use. It is supported by a PWM control signal, allowing precise control of movement.
Technical Specifications
| Property |
Specification |
| Model |
STS3215 |
| Control Angle |
360° continuous |
| Encoder Type |
Magnetic Absolute Encoder |
| Gear |
Metal Gear |
| Supply Voltage |
6 – 8.4 V |
| Idle Current |
≤100 mA at 6.0 V |
| Idle Speed |
0.16 s/60° at 6.0 V |
| Torque |
≥15 kg·cm at 6.0 V |
| Position Resolution |
12 Bit (0.088°) |
| Signal Type |
PWM (Standard RC Pulse Control) |
| Connection |
3-pin PWM Connector |
| Housing Material |
Aluminum & Plastic |
| Compatibility |
SO-ARM101 Robotic Arm |
| Dimensions |
40.5 x 20 x 38 mm |
| Weight |
≈65 g |
Advanced Control Functions
-
Smooth Start & Stop: Speed and acceleration are individually adjustable – for smooth motion transitions.
-
High Position Accuracy: 4096 steps per 360°, i.e., a resolution of 0.088°. Example: 90° = 1024 steps, 180° = 2048 steps.
Four Operating Modes
-
Mode 0 – Position Mode (Standard): Absolute position control over 360°, supports smooth movements with acceleration control.
-
Mode 1 – Closed Loop Speed Control: Speed is controlled by software. Ideal for uniform motion sequences.
-
Mode 2 – Open Loop Speed Mode: Speed programmable via time control. Good for simple motion cycles.
-
Mode 3 – Incremental Mode: Movement occurs incrementally to the next target position. Movement can be continued through repeated commands.
Multi-Turn Mode & Calibration
-
Multi-Turn Operation: Absolute position control up to ±7 turns with feedback. Position is retained on restart (no turn counting).
-
One-Click Calibration: With a single command, the current position can be set as the midpoint (2048).
Communication & Control
-
TTL-Level Communication: Half-duplex, asynchronous. Bus protocol supports parameter adjustment and synchronous reading of multiple servos.
Integrated Protection Mechanisms
-
Overload Protection: Detects obstacles during movement. If a blockage is detected, the servo stops after 2 seconds (default at 20% load limit) until the next command.
-
Overcurrent Protection: If the current exceeds the set limit, the torque is disabled.
-
Overvoltage Protection: A warning is issued if the supply voltage is exceeded.
-
Overheating Protection: Monitors motor temperature with an alarm function when the threshold is exceeded.
Versatile Feedback Parameters
-
Load Feedback: PWM load to represent current torque (0–1000 = 0–100%).
-
Current Feedback: Real-time current consumption (1 = 6.5 mA).
-
Voltage Feedback: Operating voltage in 0.1 V increments (e.g., 70 = 7.0 V).
-
Temperature Feedback: Internal temperature measurement of the servo.
-
Speed Feedback: Real-time rotational speed in steps/second or RPM.
Custom Modifications on Request
- Custom Branding: Labels and housing printing with your logo
- Cable length, number of strands, cable color selectable
- Packaging options: PE bags, colored boxes, plastic boxes with logo
- Various connector plugs: JR, JST, XH (1–4 pin)
- Output gear: Plastic, copper, steel, aluminum; various shapes (25T spline, hex, etc.)
- CNC housing machining: Structure and color as desired
- Custom electronic functions on request
Scope of Delivery
- 1 × Feetech STS3215 Servo
Typical Applications
- Servo drive for robotic arms (e.g., SO-ARM101)
- Industrial automation systems
- Precise position control in mechatronic systems
- Prototype development and research
