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→MCP23017 I2C Address
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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.
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.
That's what the A0, A1 & A2 pins are for.
+
+Conversely, if you don't see this, then you aren't ommunicating so you will need to investigate if there is something that is preventing the 12C bus working. It could be a short circuit or a broken wire or perhaps you have got the wires in the wrong order. By enlarge it's fairly forgiving and you probably haven't damaged anything, just . . .
+
+>Make Notes!!
====MCP23017 INT-A Pin ====
====MCP23017 INT-A Pin ====