DFRobot IO Expansion HAT for Raspberry Pi 5/4B/3B+ - Gravity Series Interface
The DFRobot IO Expansion HAT provides a comprehensive breakout interface for Raspberry Pi 5, 4B, and 3B+, granting direct access to digital, analog, PWM, I2C, UART, SPI, and IIS ports. It features a 5V/3.3V power rail and is fully compatible with the DFRobot Gravity Series ecosystem for simplified sensor and actuator integration.
Features
- Full Raspberry Pi IO Breakout: Provides direct access to digital, analog, PWM, I2C, UART, SPI, and IIS interfaces.
- Gravity Series Compatibility: Designed for seamless plug-and-play connection with DFRobot’s extensive Gravity sensor and module ecosystem.
- Dual Voltage Power Rails: Supplies both 5V and 3.3V power for sensors and modules, with a dedicated 6-12V input for external PWM/servo power.
- Multi-Servo Control: Supports the control of multiple servos via the expanded PWM outputs with optional external power.
- Compact Form Factor: Precision-engineered to match the Raspberry Pi footprint for a clean, integrated stack.
Out of stock
The DFRobot IO Expansion HAT is a professional-grade interface board engineered to expose and organize the native GPIO and communication ports of the Raspberry Pi 5, 4B, and 3B+. It eliminates the need for messy breadboard wiring by providing clearly labeled, screw-terminal-compatible connections for all major signal types, including digital I/O, analog inputs, PWM outputs, and serial buses (I2C, UART, SPI).
Its core design principle is seamless integration with the DFRobot Gravity Series, utilizing the standardized 3-pin or 4-pin connectors to enable plug-and-play functionality with hundreds of compatible sensors, actuators, and displays. The board incorporates robust power management, supplying stable 5V and 3.3V logic levels for connected devices and featuring a separate input for higher-current servo power (6-12V), making it ideal for robotics and multi-servo applications.
Additional Information
| Weight | 0.03 kg |
|---|---|
| Dimensions | 6.5 × 5.5 cm |














