Verify contrast (it could be too low preventing you to see text), you can adjust contrast using the blue potentiometer on the I2C backpack. Check the I2C address ...

Refer below 16X2 LCD and I2C LCD interfacing With Arduino Tutorials- Visit for simillar projects at https://microdigisoft.com Tutorial 1: Arduino LCD Display Tutorial ...

Comparing I2C ... in Arduino, we use Two Arduino UNO with Two 16X2 LCD display attached to each other and use two potentiometers at both arduino to determine the sending values (0 to 127) from master ...

[Tom Fleet] spent the dreary weekend inside learning how to drive this T6963C based graphic LCD controller ... the availability of an Arduino library helped him go from being a newbie to coding ...

The display driver (ST7789V2) and touch controller (CST816T) are integrated on-board and rely on SPI and I2C interfaces that make it compatible with popular platforms such as Raspberry Pi, Arduino, ...