Description
The M5Stack I2C Hub 1 to 6 Expansion Unit v2.1 is an essential accessory for embedded developers working with I2C sensor arrays. Built around the PCA9548AP multiplexer IC, it solves the common I2C address conflict problem by allowing a single microcontroller I2C bus to host up to six separate channels, each capable of supporting multiple devices. This enables the parallel use of identical sensors, such as multiple temperature or IMU modules, without hardware modifications.
The unit is designed for seamless integration into the M5Stack ecosystem, featuring the standard HY2.0-4P connector for connection to Core devices. Its channel-switching logic is controlled via I2C commands, allowing dynamic selection of which sensor bus is active. The onboard DIP switch provides hardware-level address configuration, facilitating the daisy-chaining of multiple hubs to create extensive I2C networks for data acquisition, robotics, and industrial monitoring systems.
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