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Success It appears I was using the wrong sketch, as you suggested. Also, I was under the impression that with the LCD module I have, I should use: LiquidCrystal_I2C lcd(0x3F,16,2); and not LiquidCrystal_I2C lcd(0x27,16,2); Just so you know – the opposite is required. Finally, confusion over the incl...

Thanks for the reply On the Uno R4, WiFi A4 & A5 are Analog input pins. This is part of the documentation in the sketch you directed me too: How to connect the Smart LCD to an Arduino Uno/Nano: Uno/Nano.......SmartLCD I2C Header GND............G (GND) 5V.............5 (5V) A4.............D (SDA) A5....

I have a Uno R4 WiFi, and I cannot get the Hello World example to show output on the display. The version of the example sketch is 24/05/17 version 0.1: Original version I believe I am using the correct configuration #define I2C_ADD 0x3F Uno/Nano.......SmartLCD I2C Header GND............G (GND) 5V.....