Get Arduino Nano Every I2C Pins Gif. The arduino communicates via i2c with the backpack. If the connections vary, it may happen that the code might also need changes to match with the i2c pins of the different boards.
Nano V3.0 Expansion Prototype Shield I/O Module Extension ... from s3-ap-southeast-1.amazonaws.com Every i2c slave device has unique address. As with many of the other arduino's. That is, arduino pin a5 and atmega4809 pins pf03 and pa03 are connected together by pcb traces such that there's no distinction between them, pf03 doesn't have its own header pin anywhere the nano every was designed to be compatible with the original nano boards that used the atmega328p.
As mentioned earlier, arduino nano has 14 digital i/o pins that can be used either as digital input or output.
Notice in the image above that the pin a4 and a5 of the analog pins portion has added functionality that is they can act as i2c interface. The arduino uno and nano are similar, but the only difference is that its size. Notice in the image above that the pin a4 and a5 of the analog pins portion has added functionality that is they can act as i2c interface. How to use a i2c multiplexer on your arduino / esp8266 you will find two gpios (sda and scl) for the i2c communication.
