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→MCP23017 I2C Address
[[File:I2cdetect -y 1 running in the zynthian terminal.png|800px|center|I2cdetect -y 1 running in the zynthian terminal]]
[[File:I2cdetect -y 1 running in the zynthian terminal.png|800px|center|I2cdetect -y 1 running in the zynthian terminal]]
ONce you have this then you can see that your MCP23017 is connected to Address A 0 . The default onfig. But you can change this if there is a conflict or your MCP23017 board has a different address set up.
That's what the A0, A1 & A2 pins are for.
====MCP23017 INT-A Pin ====
====MCP23017 INT-A Pin ====