MCP23017 - i2c 16 input/output port expander ID: 732 - $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits

MCP23017 - i2c 16 input/output port expander ID: 732 - $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits: "MCP23017 - i2c 16 input/output port expander "

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