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DFRobot IO Expansion HAT for Raspberry Pi 5 / 4B / 3B+

Specification	Details
Product Type	Raspberry Pi IO Expansion HAT
Manufacturer	DFRobot
Model	DFR0566
Compatible Boards	Raspberry Pi 5, Raspberry Pi 4B, Raspberry Pi 3B+
Interface	40-Pin GPIO Header
Digital Ports	Yes
Analog Inputs	4 (12-bit ADC)
PWM Outputs	4 Channels
Communication Interfaces	I2C, SPI, UART, IIS
Onboard Controller	STM32 Microcontroller
Operating Voltage	5V
PWM External Power	6V–12V
Sensor Interface Voltage	3.3V
Board Dimensions	65 × 56 mm

Price

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₹ 1,059.32

(Tax included)

बारकोड: 40292240

The DFRobot IO Expansion HAT (DFR0566) is a versatile GPIO expansion board designed specifically for Raspberry Pi 5, Raspberry Pi 4B, and Raspberry Pi 3B+. It expands the Raspberry Pi's connectivity by providing easy access to Digital, Analog, PWM, I2C, SPI, UART, and IIS interfaces through convenient Gravity-compatible connectors. The onboard STM32 microcontroller enables 12-bit analog input and hardware PWM functionality, allowing users to interface with a wide variety of sensors, actuators, servos, displays, and communication modules. This expansion HAT is an excellent solution for robotics, automation, IoT, embedded development, STEM education, and rapid prototyping.

Key Features:

Designed for Raspberry Pi 5, Raspberry Pi 4B & Raspberry Pi 3B+
Gravity-compatible plug-and-play sensor connectors
Onboard STM32 controller for Analog and PWM functions
4 × 12-bit Analog Input Channels
4 × PWM Output Channels
Digital GPIO breakout ports
Supports I2C, SPI, UART, and IIS interfaces
Servo power support via external 6–12V supply
Compact HAT form factor
Ideal for robotics, automation, AI, IoT, and STEM projects

Technical Details:

Product Type: Raspberry Pi IO Expansion HAT
Manufacturer: DFRobot
Model: DFR0566
Compatible Boards:
- Raspberry Pi 5
- Raspberry Pi 4 Model B
- Raspberry Pi 3 Model B+
GPIO Interface: 40-Pin Header
Onboard MCU: STM32
Analog Inputs: 4 Channels (12-bit ADC)
PWM Outputs: 4 Channels
Digital GPIO Ports: Multiple
Communication Interfaces:
- I2C
- SPI
- UART
- IIS
Operating Voltage: 5V
PWM External Power Input: 6V–12V
Sensor Interface Voltage: 3.3V
Board Size: 65 × 56 mm

Applications:

Raspberry Pi Development
Robotics
AI & Machine Learning Projects
Home Automation
Industrial Automation
IoT Systems
Sensor Data Acquisition
Servo Motor Control
STEM Education
Embedded Systems
Smart Agriculture
Smart Home Projects
Rapid Hardware Prototyping
Computer Vision Systems

Prototyping and Engineering Tips from Robogears:

Use the 6–12V external power input when driving multiple servo motors to avoid overloading the Raspberry Pi's 5V rail.
The onboard STM32 controller provides hardware PWM and 12-bit ADC functionality not available directly on the Raspberry Pi GPIO, making it ideal for analog sensor interfacing.
Gravity connectors simplify wiring and reduce connection errors, making this HAT especially suitable for educational and rapid prototyping environments.
Compatible with the DFRobot Gravity ecosystem, allowing quick integration with a large range of plug-and-play modules.

Package Includes:

1 × DFRobot IO Expansion HAT for Raspberry Pi 5 / 4B / 3B+ (DFR0566)

Disclaimer:

This expansion board is designed for 3.3V logic-level Raspberry Pi GPIOs. Ensure that connected sensors and peripherals operate within the specified voltage limits. Raspberry Pi board, sensors, jumper wires, and external power supply are not included. Specifications and PCB appearance may vary slightly between production batches without affecting functionality.