Description
The I2C Interface Plate (also called an I2C backpack) is an add-on module designed to simplify the connection of 16×2, 20×4, or other character LCD displays to a micro-controller (Arduino, ESP32, STM32, Raspberry Pi, etc.). It allows communication using the I2C (Inter-Integrated Circuit) protocol, reducing the number of required wiring connections.
📌 Key Features
✔ Reduces Pin Usage: Instead of using 6+ GPIOs, it only requires two pins (SDA & SCL).
✔ Built-in PCF8574 Chip: Converts I2C signals into parallel signals for the LCD.
✔ Adjustable Contrast: Includes a potentiometer to fine-tune display brightness.
✔ Backlight Control: Allows turning the LCD backlight on/off via software.
✔ Compatible with Various LCD’s: Works with 16×2, 20×4, and similar character displays.
✔ Supports Multiple I2C Addresses: Can be configured (via jumper pads) to use different addresses.
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