Wasla I2C Serial Adapter Module for LCD Displays

Serial I2C Interface Adapter Module for LCD Displays

Simplify your wiring and save valuable microcontroller pins with the Serial I2C LCD Daughter Board Module. Designed to solder directly onto the back of standard 16x2 or 20x4 character LCDs, this handy adapter backpack converts a messy parallel interface into a clean, 2-wire I2C connection, freeing up your board for more sensors and actuators.

Key Features

1. Pin-Saving I2C Interface: Reduces the required wiring from up to 10 pins down to just 2 data pins (SDA and SCL) plus power and ground.
2. Built-in Contrast Control: Features an onboard, easy-to-reach potentiometer that lets you dial in the perfect screen contrast for maximum readability in any lighting condition.
3. Adjustable I2C Address: Equipped with solder jumpers (A0, A1, A2) that allow you to change the default address, enabling you to daisy-chain multiple displays on the exact same I2C bus.
4. Backlight Management: Includes a removable jumper to manually enable or disable the display's backlight, which can also be controlled programmatically via your code.
5. Universal Compatibility: Works seamlessly with standard 1602 and 2004 character LCD screens.

Technical Specifications

🔌 Interface & Connectivity

1. Communication Protocol: I2C / TWI (SDA, SCL)
2. Default I2C Address: Typically 0x27 or 0x3F (depends on the exact PCF8574 chip version)
3. Pinout: GND, VCC, SDA, SCL

⚡ Power & Chipset

1. Operating Voltage: 5V DC
2. Expansion Chip: PCF8574T or PCF8574AT I/O expander

📦 Hardware Details

1. Supported Displays: 16x2 (1602) and 20x4 (2004) Character LCDs
2. Adjustments: Onboard Contrast Potentiometer & Backlight Jumper

Ideal For

1. Arduino & Raspberry Pi Projects: Easily display sensor data, system statuses, or navigation menus without eating up all your digital I/O pins.
2. Compact Prototyping: Perfect for projects housed in tight enclosures where cable management and minimal wiring are critical.
3. Smart Devices: A fundamental building block for makers looking to add a clean, text-based user interface to their hardware.

Make wiring your next display a breeze and keep your workbench organized with this essential I2C module, available now at Wasla Electronics.