Pololu 3443 FEETECH High-Torque Servo FS5115M-FB with Position Feedback

The Pololu 3443 FEETECH High-Torque Servo FS5115M-FB is a professional-grade digital servo motor engineered for robotics, automation, and precision motion control applications requiring continuous feedback and exceptional torque output. Roboticists, industrial automation engineers, and embedded systems developers rely on this servo for projects demanding real-time position verification and load-bearing capability in compact form factors. This servo solves the critical challenge of achieving accurate angular positioning with integrated feedback mechanisms while maintaining high torque delivery in space-constrained mechanical assemblies.

Product Overview

The FEETECH FS5115M-FB is a digital servo motor featuring an integrated potentiometer-based position feedback system that enables closed-loop control and real-time position verification without external sensors. The servo operates on standard PWM control signals compatible with microcontroller platforms including Arduino, Raspberry Pi, and STM32 boards. Its brushless motor design coupled with a precision gear train delivers consistent torque across the operating range while minimizing backlash and ensuring repeatability in motion control tasks. The feedback mechanism outputs an analog voltage proportional to shaft position, allowing developers to implement sophisticated motion algorithms and error correction routines directly in firmware.

This model distinguishes itself through its high-torque specification optimized for load-bearing applications while maintaining the compact dimensions required in space-critical robotic platforms. The servo features metal gears throughout the transmission system, enhancing durability under continuous operational stress and extending service life in demanding industrial environments. Thermal management through optimized motor winding design enables sustained operation at rated specifications without thermal throttling, making it suitable for extended mission profiles in autonomous systems and robotic manipulators.

Key Specifications

Specification	Details
Product Type	Digital High-Torque Servo Motor with Position Feedback
Brand	FEETECH
Model Number	FS5115M-FB
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Operating Voltage	4.8V to 6.0V DC
Maximum Torque	15 kg-cm at 6.0V
Speed	0.16 seconds per 60 degrees at 6.0V
Feedback Type	Analog Potentiometer Position Feedback
Control Signal	Standard PWM (1000-2000 microseconds)
Operating Temperature	-30 to +60 degrees Celsius

Key Features

• Integrated Position Feedback System: Built-in potentiometer provides real-time analog voltage output proportional to shaft position, enabling closed-loop control and position verification without external sensors
• High-Torque Output: Delivers 15 kg-cm maximum torque at 6.0V operating voltage, suitable for load-bearing robotic applications and mechanical load handling
• Metal Gear Construction: Precision metal gears throughout transmission minimize backlash and wear, ensuring consistent performance over extended operational periods
• Standard PWM Compatibility: Direct integration with Arduino, Raspberry Pi, STM32, and other microcontroller platforms using conventional servo control libraries
• Compact Form Factor: Maintains standard servo dimensions enabling seamless integration into existing robotic platforms and mechanical assemblies
• Wide Operating Temperature Range: Functional from -30 to +60 degrees Celsius, supporting deployment in diverse environmental conditions

Applications and Use Cases

• Robotic Arm Joints: Position feedback enables precise joint angle control in multi-axis robotic manipulators for industrial pick-and-place operations and assembly automation
• Autonomous Mobile Robots: High-torque specification powers steering mechanisms and locomotion systems in wheeled and tracked autonomous platforms requiring sustained load handling
• Pan-Tilt Camera Systems: Integrated feedback supports smooth, accurate camera positioning in surveillance and monitoring applications with real-time angle verification
• Humanoid Robot Development: Feedback mechanism enables sophisticated motion control algorithms for bipedal walking, gesture recognition, and dynamic balance in research robotics
• Industrial Automation: Reliable position feedback supports valve actuation, conveyor diverters, and mechanical switching applications in manufacturing environments
• Educational Robotics Projects: Accessible control interface and feedback system make this servo ideal for university-level robotics courses and student competition platforms

How to Use

To integrate the Pololu 3443 FEETECH FS5115M-FB into your robotic system, connect the three servo leads to your microcontroller: the red wire to 5V or 6V power supply, the black wire to ground, and the yellow signal wire to any PWM-capable GPIO pin on your controller board. Configure your microcontroller to generate standard servo PWM signals with pulse widths between 1000 and 2000 microseconds at 50Hz refresh rate. The position feedback is accessed through the integrated potentiometer output, which can be connected to an analog input pin on your microcontroller to read the current shaft position as a voltage value proportional to angle.

Implement closed-loop control by continuously reading the feedback voltage and comparing it against your desired setpoint position, then adjusting the PWM signal to drive the servo toward the target angle. Most developers use Arduino servo libraries or custom PWM generation code to simplify control implementation. Ensure adequate power supply capacity, as peak current draw during high-torque operations can reach 1.5 amperes. For applications requiring smooth motion profiles, implement acceleration and deceleration ramps in firmware to prevent mechanical shock and extend gear lifespan. Always verify feedback linearity across the full operating range during initial system calibration to ensure accurate position estimation.

Frequently Asked Questions

What is the difference between this servo and standard servos without feedback?

The FS5115M-FB includes an integrated potentiometer that outputs an analog voltage proportional to shaft position, enabling your microcontroller to verify actual servo position in real-time. Standard servos lack this feedback capability, making it impossible to detect if the servo has reached the commanded position or if external forces have moved the shaft. This feedback is essential for applications requiring position verification, error detection, and closed-loop control algorithms.

Can I use this servo with Arduino and standard servo libraries?

Yes, the servo control portion is fully compatible with Arduino and standard servo libraries using conventional PWM signals. However, to utilize the position feedback feature, you must additionally connect the feedback output to an analog input pin and read the voltage using analogRead() function. You will need to implement custom code to map the analog feedback voltage to actual shaft angles based on your calibration data.

What power supply specifications do I need for reliable operation?

Use a regulated 5V or 6V DC power supply capable of delivering at least 2 amperes continuous current, with peak capacity of 3 amperes for dynamic load handling. Ensure the power supply includes adequate filtering capacitors (1000 microfarad electrolytic plus 0.1 microfarad ceramic) placed close to the servo connector to suppress voltage spikes during rapid acceleration and deceleration. Poor power supply quality will cause servo jitter and unreliable position feedback readings.

How do I calibrate the position feedback for accurate angle measurement?

Connect the feedback output to an analog input and record the voltage values at known servo positions such as -90 degrees, 0 degrees, and +90 degrees. Create a linear calibration curve mapping voltage to angle using these reference points. Store the calibration coefficients in your firmware and apply them when converting feedback voltage readings to actual shaft angles. This calibration compensates for variations in potentiometer characteristics and ensures accurate position estimation across the full operating range.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
• Expert Team: Our technical team validates every product before listing
• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

Buy Pololu 3443 FEETECH High-Torque Servo FS5115M-FB with Position Feedback Online in India

Purchase the Pololu 3443 FEETECH High-Torque Servo FS5115M-FB with Position Feedback online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Pololu 3443 FEETECH High-Torque Servo FS5115M-FB with Position Feedback with fast shipping and expert support.

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