• Model A (DC port) packing list showing expansion board, pin headers, standoffs and mounting screws
  • Raspberry Pi 5 expansion board Model A servo motor driver with DC power socket highlighted
  • Model A Raspberry Pi 5 adapter board with blue terminal power port highlighted (terminal input version)
  • Raspberry Pi 5 expansion board Model B servo driver board, top view with onboard connectors
  • Raspberry Pi expansion board Model C for Pi 5, top view showing multi-port layout and buzzer
  • Model A (DC port) board diagram labeling ARM controller, PWM servo port, motor port, RGB and buzzer
  • Model A (terminal port) labeled diagram showing GPIO, IIC, motor port, PWM servo ports and power switch
  • Model B labeled diagram with 6-axis sensor IC, 9G servo port, bus servo port, fan port and power switch
  • Model C labeled diagram showing PWM servo ports, charging port, voltage display interface, RGB and buzzer
  • Raspberry Pi 5 expansion board Model A (DC port) application collage with robot car and manipulator arm
  • Model A (terminal port) application collage showing desktop robotic arm, robot car platform and hand setup
  • Model B application collage with humanoid robot and quadruped robot examples
  • Model C application collage showing quadruped robot in action and computer-connected setup
  • Model A (DC port) mechanical drawing with dimensions 65×56 mm and 22 mm height profile
  • Model A (terminal port) dimension drawing showing 65×56 mm board and 22 mm height profile
  • Model B dimension drawing with 65×56 mm footprint, 58 mm width mark, and 24 mm height profile
  • Model C dimension drawing with 65×56 mm footprint, 58 mm width mark, and 21 mm height profile
  • Model A (terminal port) packing list with expansion board, pin headers, standoffs and mounting screws
  • Model B packing list showing expansion board plus included pin headers, standoffs and mounting screws
  • Model C packing list showing expansion board plus included pin headers, standoffs and mounting screws
  • Raspberry Pi 5 expansion board with DC power socket, plus active heatsink fan and mounting hardware set
  • Raspberry Pi 5 expansion board with blue terminal power port and included active heatsink fan kit
  • Raspberry Pi 5 expansion board Model B kit with active heatsink fan, connector-rich driver board and mounting hardware
  • Raspberry Pi 5 expansion board model C with small fan heatsink kit, mounting hardware and thermal pads
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Hiwonder

Hiwonder Raspberry Pi 5 Expansion Board Servo Motor Driver for ROS Robot Cars & Manipulator Arms (A/B/C)

Hiwonder Raspberry Pi 5 Expansion Board Servo Motor Driver for ROS Robot Cars & Manipulator Arms (A/B/C)

$52.99 USD
$52.99 USD
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Overview

This Raspberry Pi 5 expansion board is a multi-functional servo motor driver and robot controller designed for Raspberry Pi 5 and Raspberry Pi 4B. It integrates a Cortex-M3 32-bit high-performance Arm chip and a Co-MCU to drive motors, servos, sensors, and other peripherals, using CRC (cyclic redundancy check) for communication. Multiple versions are available (Model A/B/C) to match different robot car and robot arm interface requirements.

Key Features

  • Compatible platforms: Raspberry Pi 5 and Raspberry Pi 4B (all expansion board models A/B/C).
  • Motor control: Drives 4 motors simultaneously and supports PID speed control (Model A motor version).
  • Servo support: Onboard PWM servo ports and serial bus servo ports for robotic arm and humanoid development (Model A/B support both PWM and bus servos; Model C supports PWM servo only).
  • IMU support: 6-axis IMU (MPU6050) providing 3-axis accelerometer + 3-axis gyroscope (supported on models B/C).
  • Onboard interfaces (as labeled on board): IIC port, GPIO port, RGB lights (on applicable models), buzzer, built-in power switch, and dedicated function keys.
  • Power input: 5-12V; power supply interface differs by model (DC port / terminal port / DC + terminal).

Specifications

Parameter Model A (DC Port) Model A (Terminal Port) Model B Model C
Power supply interface DC Port Terminal Port DC + Terminal Port DC + Terminal Port
Processor Cortex-M3 32-bit high-performance Arm chip
Co-MCU Featuring 1 Co-MCU, it effectively distributes the workload from the Raspberry Pi, reducing resource utilization on the Raspberry Pi.
IMU attitude sensor / / 3-axis accelerator / 3-axis gyroscope
Power input 5-12V
Motor control 4-lane motor port / /
Bus servo port 2-lane bus servo port 6-lane bus servo port /
PWM servo port 6-lane PWM servo port 2-lane PWM servo port 11-lane PWM servo port
IIC port 3-lane IIC port 4-lane IIC port 2-lane IIC port
GPIO port 2-lane GPIO port
RGB lights 2 RGB lights support user customization / 2 RGB lights support user customization
Buzzer Featuring 1 buzzer that support user customization
Programmable customization key Featuring 2 keys that support user customization
Dimension 65mm*65mm
Weight 31g
Mounting hole spacing 58mm
Board layer Industrial-grade double-layer board

Applications

  • Robot car chassis and mobile robots: two-wheeled, differential four-wheeled, mecanum wheel, omnidirectional wheel, steering, and Ackermann robot cars
  • Robotic arms (including 6-degree-of-freedom arms) and humanoid robot development using PWM and/or serial bus servos (model dependent)
  • Example application projects by model: Model A (DC Port): ArmPi mini, TurboPi, MasterPi, GoGoPi; Model A (Terminal Port): ArmPi FPV, ArmPi Pro, uHandPi; Model B: TonyPi, TonyPi Pro, SpiderPi, SpiderPi Pro; Model C: PuppyPi, PuppyPi Pro

Video

Details

Hiwonder Raspberry Pi 5 expansion board lineup (Models A DC/Terminal, B, C) servo motor driver for robot cars

Choose the interface layout that matches your build—Model A (DC or terminal power), Model B, or Model C for different robot car and manipulator arm setups.

Multi-functional Raspberry Pi 5/4B expansion board models A/B/C with Cortex‑M3 controller for motors and servosVersion selection guide comparing Model A (DC/Terminal), Model B, and Model C for different robot applications

Multiple board versions are available so you can prioritize motor ports, bus servos, or PWM servo headers depending on the project.

Stacking diagram showing expansion board installation on Raspberry Pi 5 and Raspberry Pi 4B with cooler/heatsink clearance

Designed to fit Raspberry Pi 5 and Raspberry Pi 4B while keeping room for common cooling solutions.

Compatibility overview for Raspberry Pi 5 and 4B with identical interfaces and support for peripherals like active coolerCortex‑M3 Arm MCU concept graphic representing onboard co-processor handling real-time motor and servo control

An onboard Cortex‑M3 controller and co‑MCU help offload real-time control tasks from the Raspberry Pi.

MPU6050 IMU feature graphic with 3-axis accelerometer and 3-axis gyroscope on supported board models

Models with the 6‑axis MPU6050 IMU add motion and attitude sensing for balancing and navigation experiments.

Four DC motor wiring example connected to the expansion board motor ports for robot car chassis builds

Motor outputs support common robot car drivetrains, including 4‑motor chassis configurations.

Servo wiring example with multiple servos connected to the expansion board headers for robotic arm control

Connect multiple servos for robotic arm or pan/tilt projects using the onboard servo connectors.

Connector callouts highlighting TT motor port, serial bus servo port, PWM servo port, and LCD display port on the board

Clear on-board connectors make it easy to hook up DC motors, PWM servos, serial bus servos, and optional displays.

Model A (DC port) Raspberry Pi 5 expansion board layout with labeled motor ports, PWM/serial bus servos, I2C, GPIO, RGB, buzzer

Model A focuses on robot car control with motor ports plus both PWM and serial bus servo connections.

Model A (terminal power) board layout with labeled interfaces, function keys, RGB, buzzer, and motor/servo connectorsModel B Raspberry Pi 5 expansion board layout featuring IMU sensor, 6-channel bus servo ports, PWM servo ports, and power switch

Model B adds IMU support and expanded serial bus servo connectivity for humanoid and multi-servo robots.

Model C Raspberry Pi 5 expansion board layout with IMU, multi-channel PWM servo ports, voltage display interface, and power switch

Model C emphasizes high-count PWM servo outputs for servo-heavy builds that don’t require bus servos.

Close-up of RasAdapter5A V1.0 board showing DC barrel jack input, power switch, buzzer, and multiple servo/motor headersRasAdapter5A V1.0 top view with screw terminal input, OFF/ON switch, and labeled headers for 5V/GND signal connections

Board-level details include an onboard power switch and clearly labeled headers for fast wiring and maintenance.

Close-up of RasAdapter5B V1.0 expansion board with screw terminal power input, I2C headers, and buzzerRaspberry Pi 5 Expansion Board, Servo Motor Driver, ROS Robot Manipulator Arm Smart Car Controller