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

The DFRobot IO Expansion HAT elevates your Raspberry Pi experience by offering a comprehensive suite of ports, including Digital, Analog, I2C, PWM, UART, and SPI. Its compact design seamlessly integrates with devices like the Raspberry Pi 5, Zero, and Zero W, providing a robust solution for enhancing functionality without compromising space.

Designed for versatility, this expansion board exposes the I/O ports of the Raspberry Pi efficiently. The digital ports, accessible via GPIO16 to GPIO25 (BCM), can be used for straightforward digital interaction. Additionally, the PWM and Analog ports are powered by an onboard MCU STM32, which interfaces with the Raspberry Pi through I2C communication. This setup allows for easy PWM control and ADC input reading when paired with compatible libraries.

Whether working on projects that require variable power sources or complex sensor arrays, the board accommodates with support for 5V power supply and compatibility with 3.3V sensor modules. The PWM ports offer flexibility through external power options ranging from 6 to 12 volts or can utilize the Raspberry Pi's 5V output, ensuring adaptability to various project needs.