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• 08:04, 24 August 2025 Visuino talk contribs created page Microchip MCP23009 GPIO (I2C) (Created page with "Image:TArduinoMCP23009.png == Summary == I2C-controlled GPIO expander with 8 channels, configurable as inputs or outputs with optional pull-up resistors. == Description == The **MCP23009** component provides 8 GPIO channels accessible over I2C. Each channel can be individually configured as a digital input or output, with optional pull-up resistors. This component is ideal for expanding the number of digital I/O pins on a microcontroller, controlling LEDs...")