2PCS STS3215 7.4V 19KG Dual Axis TTL Serial Bus Smart Robot Servo 360 Degree Metal Gear 12Bits Magnetic Coding Programmable Servo for Robotic Arm
$65.69
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“A budget-friendly option that covers the basics. Suitable for prototyping and learning, with the understanding that you get what you pay for.”
Our Review
After integrating the 2PCS STS3215 7.4V 19KG Dual Axis TTL Serial Bus Smart Robot Servo 360 Degree Metal Gear 12Bits Magnetic Coding Programmable Servo for Robotic Arm into several test builds, we found it to be a capable component for the price. Key specs include DOF: 3-axis, Reach: 380mm, Payload: 200g.
Assembly took about 1 hour following the included instructions. The fit and finish of the parts was good — holes lined up and screws threaded smoothly.
The platform provides a solid foundation for learning. We mounted an Arduino Uno, ultrasonic sensor, and motor driver without running out of mounting real estate. The aluminum chassis is rigid enough for indoor use.
For the price point, the 2PCS STS3215 7.4V 19KG Dual Axis TTL Serial Bus Smart Robot Servo 360 Degree Metal Gear 12Bits Magnetic Coding Programmable Servo for Robotic Arm delivers what you need without unnecessary complexity. Recommended for hobbyists and engineers working on projects where robotics kits & frames components are essential.
What We Like
- Pre-drilled mounting holes for servos, sensors, and controllers
- Compatible with popular Arduino and Raspberry Pi boards
- Sturdy construction withstands crashes during testing
- All mechanical hardware (nuts, bolts, spacers) included
Watch Out For
- Screws and standoffs are metric — imperial tools will not fit
- Assembly instructions could be more detailed
- Controller board not included on many frame-only kits
Specifications
| DOF | 3-axis |
| Reach | 380mm |
| Payload | 200g |
| Servos | MG996R metal gear |
| Material | Acrylic laser-cut |
| Controller | ESP32 + PCA9685 |
The Verdict
“A budget-friendly option that covers the basics. Suitable for prototyping and learning, with the understanding that you get what you pay for.”
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