Next, type in the Keywords box and add the I2C expander to your workspace. 2. Pinout Configuration and Schematic Wiring
Arduino Uno, JHD-2X16 I2C module (PCF8574), Power terminals (+5V), Ground terminals. Connections: Arduino A4 (SDA) to PCF8574 SDA . Arduino A5 (SCL) to PCF8574 SCL . VCC to +5V . GND to GND . jhd-2x16-i2c proteus
A standard 16x2 LCD requires at least 6 to 10 microcontroller pins for parallel data transfer. The I2C modification integrates a PCF8574 IC backpack, reducing the required control pins to just two: : Transmits data bits. SCL (Serial Clock) : Synchronizes data transmission. Next, type in the Keywords box and add