Pololu 3425 / 3424 FEETECH Standard Servo FS5103B/ FS5106B

The Pololu 3425 and 3424 FEETECH Standard Servo modules featuring the FS5103B and FS5106B models are precision-engineered rotational actuators designed for robotics, automation, and control applications requiring accurate angular positioning. These servos are widely utilized by roboticists, embedded systems engineers, and automation professionals who demand reliable torque delivery and repeatable positioning accuracy in compact form factors. These servos solve critical challenges in projects requiring precise angular control, such as robotic arms, pan-tilt mechanisms, and automated mechanical systems where standard DC motors cannot provide the necessary feedback and positional accuracy.

Product Overview

The FEETECH FS5103B and FS5106B servos represent a significant advancement in standard servo technology, incorporating advanced control electronics and high-torque output capabilities. These models utilize a three-wire control interface compatible with PWM signals, allowing seamless integration with microcontrollers such as Arduino, Raspberry Pi, and PLC systems. The internal feedback mechanism employs a potentiometer-based position sensor that continuously monitors shaft position, enabling the servo's internal circuitry to maintain precise angular positioning within specified tolerance bands. The servo motor operates on DC voltage with integrated gearbox reduction, converting high-speed motor output into controlled, high-torque rotational motion suitable for mechanical load applications.

What distinguishes the FS5103B and FS5106B models is their robust construction featuring metal gears and reinforced servo horn attachment points, providing superior durability compared to plastic-geared alternatives. The FS5103B delivers moderate torque specifications ideal for lighter applications, while the FS5106B provides enhanced torque output for demanding mechanical loads. Both models feature standardized servo mounting interfaces, allowing drop-in compatibility with existing robotic platforms and mechanical assemblies. The Pololu integration ensures quality control, testing, and documentation that meets professional engineering standards, making these servos suitable for both hobbyist prototyping and commercial deployment scenarios.

Key Specifications

Specification	Details
Product Type	Standard Servo Motor with Integrated Control
Brand	FEETECH / Pololu
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
Control Signal	PWM, 1000-2000 microsecond pulse width
Speed (No Load)	0.12 to 0.16 seconds per 60 degrees
Torque Output	FS5103B: 1.8 kg-cm, FS5106B: 2.5 kg-cm at 5V
Gear Type	Metal gears with reinforced housing
Connector Type	Standard 3-pin servo connector

Key Features

• PWM-compatible control interface enabling direct connection to Arduino, Raspberry Pi, and microcontroller platforms without additional interface circuitry
• Integrated feedback potentiometer providing real-time position sensing for closed-loop control and position verification in automated systems
• Metal gear construction delivering superior durability and load-bearing capacity compared to plastic alternatives, extending operational lifespan in continuous-duty applications
• Standardized servo horn and mounting interfaces ensuring compatibility with commercial robotic platforms and custom mechanical assemblies
• Compact form factor at approximately 23mm x 12mm x 29mm, enabling integration into space-constrained applications and portable robotic systems
• Operating range of 0 to 180 degrees with smooth, jitter-free positioning suitable for precision mechanical applications

Applications and Use Cases

• Robotic arms and manipulators requiring multi-axis joint control with repeatable positional accuracy for pick-and-place operations in manufacturing automation
• Pan-tilt camera mounts in surveillance systems and aerial platforms demanding smooth, controlled rotation across horizontal and vertical axes
• Automated door locks and access control mechanisms where precise angular positioning ensures reliable mechanical engagement and disengagement
• Educational robotics platforms and STEM projects enabling students to learn servo control principles through hands-on experimentation with industry-standard components
• Autonomous vehicle steering systems and mobile robot navigation requiring synchronized multi-servo control for directional movement and obstacle avoidance
• Industrial automation equipment including conveyor diverters and mechanical actuators where torque delivery and positioning accuracy are critical operational parameters

How to Use

To integrate the FEETECH FS5103B or FS5106B servo into your project, connect the three-pin servo connector to your control system: the red wire connects to positive voltage (4.8V to 6.0V DC), the black wire to ground, and the yellow or white wire to your microcontroller's PWM-capable GPIO pin. Configure your microcontroller to generate PWM signals with a frequency of 50Hz and pulse width varying between 1000 and 2000 microseconds, where 1500 microseconds typically corresponds to the neutral 90-degree position. A pulse width of 1000 microseconds drives the servo to approximately 0 degrees, while 2000 microseconds drives it to approximately 180 degrees. Ensure your power supply can deliver sufficient current, typically 500mA to 1A depending on load conditions, to prevent voltage droop that would cause erratic servo behavior.

For optimal performance, mount the servo securely to prevent mechanical vibration and use appropriate servo horns matched to your mechanical load requirements. If driving multiple servos from a single microcontroller, consider using a servo driver module or dedicated PWM controller to ensure precise timing and prevent signal degradation. Always verify your servo's response to test PWM signals before integrating it into critical mechanical systems. For applications requiring feedback confirmation, read the servo's position by monitoring the feedback potentiometer voltage through an analog input if your microcontroller supports ADC conversion, allowing you to implement closed-loop control algorithms that verify actual position matches commanded position.

Frequently Asked Questions

What is the difference between the FS5103B and FS5106B models?

The primary differences lie in torque output and speed specifications. The FS5103B provides 1.8 kg-cm torque at 5V with a speed of 0.16 seconds per 60 degrees, making it suitable for lighter applications. The FS5106B delivers higher torque output of 2.5 kg-cm at 5V with faster response at 0.12 seconds per 60 degrees, making it better suited for applications requiring greater load-bearing capacity and faster response times. Choose based on your mechanical load requirements and response time constraints.

Can I control multiple servos simultaneously from a single Arduino board?

Yes, you can control multiple servos from a single Arduino by connecting each servo's signal wire to different PWM-capable pins on the Arduino. The Arduino Servo library allows you to create multiple Servo objects and control them independently. However, ensure your power supply can deliver sufficient current for all servos operating simultaneously, typically 500mA to 1A per servo under load. For more than 4-6 servos, consider using a dedicated servo driver module like the PCA9685 I2C servo controller to free up microcontroller resources and improve signal reliability.

What power supply specifications should I use for these servos?

Use a regulated DC power supply providing 4.8V to 6.0V output with a minimum current capacity of 1A per servo. For multiple servos, calculate total current as the sum of individual servo requirements. Use a power supply with good voltage regulation to prevent fluctuations that cause servo jitter and position inaccuracy. Separate your servo power supply from your microcontroller power supply using a common ground connection to minimize noise coupling and ensure stable operation. If using battery power, ensure the battery voltage remains within specification throughout the discharge cycle.

How do I calibrate the servo to ensure accurate positioning?

Most servos arrive pre-calibrated from the manufacturer. To verify calibration, send a 1500-microsecond pulse and confirm the servo shaft aligns with the center position marking on the servo horn. If adjustment is needed, some servo models feature a small trimmer potentiometer accessible through the servo casing, but FEETECH servos typically require calibration through software. Implement software calibration by recording the PWM values corresponding to your mechanical endpoints and mapping them appropriately in your control code. Always test calibration with no load before attaching mechanical components.

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
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• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
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• Returns: 7-day return policy on manufacturing defects only

Buy Pololu 3425 / 3424 FEETECH Standard Servo FS5103B/ FS5106B Online in India

Purchase the Pololu 3425 / 3424 FEETECH Standard Servo FS5103B/ FS5106B 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 3425 / 3424 FEETECH Standard Servo FS5103B/ FS5106B with fast shipping and expert support.