OFFICIAL STORE MODELS

FASHION STAR SERVO HUB

Smart Robotic Servo Motors & Actuators

Explore Fashion Star Bus Servo, programmable PWM Servo, and waterproof or underwater servo options for robotics, automation, education, and specialized motion systems.

Explore Servo Products → Servo Documentation

UARTRS-485CAN BusPWM

START WITH SERVO TYPE

Choose the Servo Category That Fits Your System

Begin with the control architecture and operating environment. Each category leads to a dedicated Hub for more focused guidance.

DIGITAL BUS CONTROL

Bus Servo

Addressable control for robot systems that need multiple actuators, command integration, and model-dependent status feedback.

UART, RS-485, and CAN paths
Multi-servo system integration
Robotics and automation

Explore Bus Servo →

POINT-TO-POINT PWM

PWM Servo

Familiar PWM control for RC systems, robotics, UAV mechanisms, and compact motion applications.

Simple controller connection
Programmable settings on supported models
Protection features on supported models

Explore PWM Servo →

WET & SUBMERSIBLE USE

Waterproof Servo

Servo options designed for wet environments, splash exposure, and underwater systems, with model-specific protection ratings.

PWM, RS-485, or CAN configurations
ROV and outdoor applications
Verify the rating for each model

Explore Waterproof Servo →

BUS SERVO PROTOCOLS

Select a Bus Servo Communication Path

If your project needs Bus Servo control, choose the protocol Hub that matches the wiring environment, controller, and network architecture.

DIRECT SERIAL PATH

UART Bus Servo

A practical route for general control, development integration, and compact robot systems.

Store example: HA8-U25H-M12V · 2.45N·m · 65g

Open UART Servo Hub →

DIFFERENTIAL BUS

RS-485 Bus Servo

Designed for longer communication paths, stronger electrical-environment reliability, and multi-node integration.

Store example: HX8-R50W-M24V · 4.90N·m · 96g

Open RS-485 Servo Hub →

DISTRIBUTED NETWORK

CAN Servo

A scalable path for distributed robot architectures, multi-node deployment, and joint-system debugging.

Store example: HX8-C50W-M24V · 4.90N·m · 96g

Open CAN Servo Hub →

SERVO TYPE COMPARISON

Compare UART, RS-485, CAN, and PWM

Use this overview to narrow the control path, then confirm interface and performance details on the model page and documentation.

Selection factor	UART	RS-485	CAN	PWM
Control signal / bus	UART serial; UC-01 converts TX/RX to one half-duplex S signal	RS-485 differential A/B pair	CAN bus; CANBUS and UAVCAN	Standard PWM pulse-width signal (20 ms period)
Wiring approach	Shared signal line plus power; short-distance integration	Shared A/B differential pair plus power; suited to longer runs	Shared CAN bus plus power; distributed nodes	One PWM control signal per servo plus power
Feedback & control	Angle, temperature, voltage, current, power and status feedback; closed-loop control	Angle, temperature, voltage, current, power and status feedback; closed-loop control	Angle, temperature, voltage, current, power and status feedback	No data feedback; no closed-loop control
Built-in control functions	Single-/multi-turn position, damping, synchronous and asynchronous commands	Single-/multi-turn position, damping, synchronous and asynchronous commands	Real-time CAN control and status communication	Position command by pulse width; protection parameters configurable
Communication strengths	Simple development and compact wiring	Strong noise immunity and long-distance differential communication	High real-time performance, robust interference resistance and multi-node networking	Simple, familiar controller interface
Best-fit applications	Education, research, robot joints and short-distance systems needing monitoring	Industrial, medical and research systems needing long-distance, noise-resistant control	UAVs, AGVs, autonomous platforms and reliable mobile robots	Education, RC models, vehicles/boats and cost-sensitive applications without feedback

Waterproof describes environmental protection rather than a communication protocol. Waterproof models may use PWM, RS-485, or CAN depending on the product.

Applications / Solutions

Match the Servo Path to the Application

The final choice depends on actuator load, mechanism, controller, wiring, and environment. These cards provide a practical starting route.

BUS OR PWM

Robot Arms

Use Bus Servo for coordinated multi-joint control, or PWM where the controller and mechanism suit point-to-point channels.

BUS SERVO

Humanoid Robots

Start with Bus Servo, then choose UART, RS-485, or CAN according to the controller and network architecture.

RS-485 OR CAN

Industrial Automation

Begin with RS-485 or CAN, then verify the controller interface, environment, and selected servo documentation.

UART OR PWM

Education & Prototyping

UART and PWM provide approachable development paths for learning, rapid prototypes, and compact mechanisms.

PWM CONTROL

Gimbal & Camera Systems

Use PWM for direct multi-axis positioning in camera stabilization and compact motion systems.

WATERPROOF SERIES

Wet & Outdoor Applications

Choose by exposure or depth and confirm the model-specific protection rating and interface.

SERVO SELECTION GUIDE

Eight Checks Before You Choose a Servo

Use these checks to define requirements, then verify the selected model in the Store specification and Wiki documentation.

Torque

Define the mechanism load and confirm the required torque against official model specifications.

Speed

Match motion speed and duty needs to the speed data listed for the selected model.

Size & Weight

Check the enclosure, mounting dimensions, horn, and mass against the mechanical design.

Operating Voltage

Confirm that the servo voltage and power supply are compatible with the complete system.

Control Interface

Choose PWM or a Bus protocol supported by the host controller and integration plan.

Feedback

Identify the status data your application needs and verify support for the specific model and interface.

Communication Environment

Consider wiring length, electrical noise, node layout, and the controller before selecting a Bus protocol.

Waterproof Requirement

For wet or submerged use, verify the model-specific protection and operating conditions.

Requirements defined?

Continue to the dedicated type Hub, or compare current models and specifications in the Store.

Browse Servo Models →

SERVO FAQ

Frequently Asked Questions

Quick answers for choosing the correct Servo category and next technical resource.

What types of servos does Fashion Star offer?

Fashion Star offers Bus Servo, PWM Servo, and waterproof or underwater servo options. Bus Servo products are further organized by UART, RS-485, and CAN communication paths. Start with the Servo type overview.

What is the difference between a bus servo and a PWM servo?

A Bus Servo uses a digital communication bus and can support addressable multi-servo control and model-dependent feedback. A PWM Servo normally receives an individual PWM control signal from a controller. See the comparison table for the main selection differences.

Which servo is suitable for a robot arm?

Both Bus Servo and PWM Servo can be used in robot arms. Bus Servo is a useful starting point for coordinated multi-joint systems, while PWM may suit simpler point-to-point controller layouts. Select the final model from the required torque, speed, size, voltage, and controller interface.

When should I choose UART, RS-485, or CAN?

UART is an accessible route for general development and compact integration. RS-485 is suited to longer wiring and more demanding electrical environments. CAN is suited to distributed and scalable robot architectures. Confirm controller support and implementation details in the relevant protocol Hub and Wiki.

Do Fashion Star servos support feedback?

Bus Servo systems support bidirectional status communication, but the available feedback data depends on the product and interface. PWM control does not inherently provide the same shared bus feedback model. Always confirm the selected model documentation.

How do I select the correct torque?

Define the mechanism load and operating conditions, then compare that requirement with the official torque specification for each model. Leave appropriate engineering margin for the real mechanism and consult Fashion Star engineering if the application is uncertain.

Are waterproof servos available?

Yes. Fashion Star provides models for wet, splash-exposed, and underwater applications. Protection and depth are model-specific, and supported interfaces can include PWM, RS-485, or CAN. Review the Waterproof Servo Hub before choosing.

OFFICIAL SERVO RESOURCES

Compare, Buy, and Integrate with Confidence

Move from category guidance to official product data, wiring, SDKs, APIs, CAD resources, and application ideas.

YOUR NEXT STEP

Choose the right path for your motion system.

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