Likewise, the SCL pin is the serial clock line and the SDA pin is the serial ... interconnection between an Arduino microcontroller and a 24C256 serial EEPROM is shown in the table below. As pointed ...

and additional SDA and SCL pins. Since the discontinuation of the original and Rev2 boards, the Rev3 has become the face of the Uno family and the Arduino brand in general. In fact, it's ...

Some beginner-friendly Arduino Uno projects you can get started ... and their A4 and A5 pins both double as SDA and SCL pins for I2C/TWI communication. However, the Nano offers a slight advantage ...