Get Arduino Uno Pinout I2C Pics. The 2 first pins side to usb connector are sda/scl according to documentation. This arduino uno pinout diagram reference will hopefully help you get the most out of this board.
7 bits identify the device, and the eighth bit determines if it's being written to or read from.
Maybe it is because many of the pinout diagrams for the nano have scl and sda on the wrong pins. .to arduino and how to print on lcd display.before going to start this tutorial you must know a brief about i2c communication.each i2c bus consists of force the clock low at times to delay the master sending more data (or to require more time to prepare data before the master attempts to clock it out). I see on arduino uno there is twice sda and sdl: Arduino lcd i2c tutorial | how to program lcd.
