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Be very careful when opening those files though, that you don’t modify them or you’ll need to reinstall everything from scratch.

No setup is required, however you can access the files that comprise the wire library in the program folders installed with your Arduino IDE. No schematic is associated with this module. Understand which functions are used with an Arduino Master and which are used with an Arduino Slave.Know which functions actually cause data to transmit and which are only preparatory.Learn the nine Wire Library functions and their purpose.Understand why the code is called the Wire Library and not the I2C Library.

Now that we have a firm understanding of how we need to structure the signals to communicate with an I2C component, let’s look at the Arduino Wire Library that will actually manage all of that signaling for us.