IntroductionLiquid Crystal Displays (LCDs) are a common component in various electronic devices, providing a user interface through visual representation of data. Among the many pins on an LCD display, the A (Anode) and K (Cathode) pins play crucial roles in controlling the backlight of the display.

Understanding the I2C LCD ModuleThe I2C LCD module is a powerful tool that simplifies the connection of an LCD to an Arduino. Unlike traditional parallel connections, which require multiple pins, the I2C interface uses only two wires—SDA (data line) and SCL (clock line)—to communicate with the micro