I am building an Arduino system that will need a bunch of IO primarily for buttons, switches and LEDs. There are a few out there, but the MCP23016 seems to be readily available at EBAY and comes a Dip package, which I like. I am counting 8 LEDs (outputs) and 10 Switches (inputs) so I probably want …

Please share your experience with the MCP23016 16-bit I2C IO Device with me.

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