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Topic: i2c and use a4 for input (Read 124 times) previous topic - next topic


Hi all,
i'm a newbie in arduino.
I'm using uno rev3 version and a shield that should use i2c communication.
Looking at shield (battery shield from futurashop) it seem it use  new sda and scl pin (near href) for i2c.
So can i use a4 and a5 for input? or it will be keep free for  i2c communication ?

Thanks to all in advance


Hi darriocarrato

Those pins near AREF connect to pins A4 and A5.  So you can't use A4 and A5 for I2C and something else.


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