Raspberry Pi I/O Expander Board

To simplify using the the MCP23017 I/O Expander on the Raspberry Pi I’ve made a little plug in board using a  Slice of Pi from Ciseco. The Slice of Pi is a handy little PCB that plugs directly onto the Raspberry Pi’s GPIO pins and gives a convenient row of labelled standard 0.1 inch (2.54mm) headers for …

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