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CQRobot Ocean: MCP23017 IO Expansion Board Compatible with Raspberry Pi/micro:bit/Arduino/STM32 Motherboard. I2C Interface, Expands 16 I/O Pins, Up to 8 Expansion Boards Can be Used Simultaneously. : Amazon.fr: Informatique
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MCP230xx IO Expander | Character LCD with Raspberry Pi or BeagleBone Black | Adafruit Learning System
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Waveshare MCP23017 IO Expansion Board, I2C Interface, Expands 16 I/O Pins, Compatible with Both 3.3V and 5V Levels : Amazon.fr: Informatique
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