Drive your displays without the wiring mess. The IIC/I2C Serial Interface Adapter is the ultimate solution for preserving your microcontroller's limited GPIO pins. Known as an "LCD Backpack," this module solders directly to the back of standard character displays (like the 1602 or 2004), converting the complex 16-pin parallel connection into a simple 2-wire I2C interface. It includes a built-in potentiometer for contrast adjustment, making it an essential upgrade for clean, professional-looking Arduino projects.
- SAVE I/O PINS: Converts data transmission to the I2C protocol, allowing you to drive a full LCD screen using only two control wires (SDA and SCL).
- LCD COMPATIBILITY: Designed with a standard header pitch to fit perfectly on the back of 1602 (16x2) and 2004 (20x4) character displays.
- ADJUSTABLE CONTRAST: Features an onboard blue potentiometer (trim pot), letting you fine-tune the text brightness and clarity with a simple screwdriver twist.
- ADDRESS SELECTION: Includes A0/A1/A2 solder pads that allow you to modify the I2C address (default 0x27 or 0x3F), enabling multiple screens on one bus
- BACKLIGHT CONTROL: Equipped with a jumper cap that can be removed to disable the LED backlight via software or hardware for power saving.
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