View Arduino Nano I2C Pinout Photos. You probably think (as i did and as the guys laying out the pinout once you wire it up correctly, this arduino i2c scanner will let you know you have proper connectivity and the address for the device Hello there is a lack of clarity on the documentation page for arduino nano regarding pins designated for i2c comms.

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I got some arduino nanos at really good price on amazon and wanted to connect a 7 segment led display with an i2c backpack. Hello there is a lack of clarity on the documentation page for arduino nano regarding pins designated for i2c comms. They use the same processor (atmega328p) and hence they both can share the same i2c a4 (sda) and a5 (sca):

Used to provide reference voltage for analog inputs with.

The arduino nano is very much similar to the arduino uno. Used for iic communication using wire library. The arduino nano is very much similar to the arduino uno. Each pin on the nano board comes with a specific function associated with it.