16x2 Alphanumeric LCD Display Module with Pre-Soldered I2C Serial Interface (HD44780 / PCF8574, 5V)

Upgrade your microcontroller projects with this crisp 16-character by 2-line alphanumeric LCD. Equipped with a factory-soldered PCF8574 I2C adapter backpack, this module reduces wiring down to just two data lines (SDA and SCL) plus power, freeing up valuable digital I/O pins on your Arduino, ESP32, or Raspberry Pi.

Key Features & Technical Specifications:

• Display Format: 16 characters × 2 lines (5×8 dot matrix per character)

• Interface: Serial I2C (Default Address: 0x27 or 0x3F, configurable via address jumpers)

• Controller IC: HD44780-compatible driver with PCF8574 I2C expander

• Operating Voltage: 5V DC

• Backlight & Contrast: Integrated LED backlight with an on-board potentiometer for easy contrast tuning

• Pinout (4-Wire): VCC, GND, SDA, SCL

• Applications: Sensor readouts, DIY weather stations, debug interfaces, home automation dashboards.