I2C Lcd Display Iic I2C Serial Interface Board module Lcd 1602 address changeable

Specification: Specification Details Chipset PCF8574 / PCF8574A I2C Address 0x27 (default), configurable (0x20–0x27 / 0x38–0x3F) Communication I2C (2-wire) Compatible LCDs 16x2, 20x4 (HD44780 or equivalent) Operating Voltage 5V DC Logic Level 5V logic (3.3V tolerant on some boards) Backlight Control Jumper or software control via I2C command Contrast Adjustment Manual, via onboard potentiometer Size Approx. 41mm x 20mm x 12mm (mounted on LCD) Mounting 16-pin LCD header (soldered or plugged) Weight ~5 grams   Features: 🔁 I2C Protocol for Simplified Wiring Replaces the complex 4-bit or 8-bit parallel connection with just two signal lines (SDA & SCL). Frees up valuable digital I/O pins on your microcontroller. Ideal for compact or pin-limited designs like ESP8266, ESP32, Nano, etc. 🧠 Powered by PCF8574 I/O Expander Chip Uses the PCF8574 or PCF8574A IC to convert I2C data into parallel data for the HD44780 LCD. Handles data/command mode swit