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MUSE Pi / MUSE Pi Pro Expansion I/O Definitions

Both the MUSE Pi and MUSE Pi Pro mainboards provide external expansion I/O headers, allowing users to connect additional peripherals such as GPIO, I²C, and SPI devices.

Starting from Bianbu Star V2.1.5, these expansion I/O interfaces are pre-initialized with default definitions. In most use cases, users can directly access the expansion I/O without modifying the device tree (.dts) files.

MUSE Pi Pro​

The MUSE Pi Pro features a 40-pin expansion header.
The functional pin definitions are shown below: MUSE Pi Pro

MUSE Pi​

The MUSE Pi provides a 26-pin expansion header.
The functional pin definitions are shown below: MUSE Pi