LCD I2C Interface Adapter Module PCF8574

450 DA

This I2C adapter board with PCF8574 allows your LCD screen to connect with only two wires, saving GPIO pins and simplifying wiring for Arduino or Raspberry Pi projects.

Category: Display Accessories
Stock: In stock

450 DA

In stock

About this item

🔌 LCD I2C Interface Adapter Module PCF8574

📟 Simplify LCD Wiring with I2C Communication

The LCD I2C Interface Module with PCF8574 I/O expander allows standard 16x2 or 20x4 character LCDs to be connected using only two wires (SDA & SCL). It significantly reduces pin usage on microcontrollers like Arduino and Raspberry Pi.

🛠️ Features

🔁 I2C communication (SDA & SCL only)
🔌 Compatible with 16x2 and 20x4 LCD displays
📏 Built-in contrast adjustment potentiometer
🔧 Onboard jumper to enable/disable backlight
🧠 Powered by PCF8574 I/O expander IC

🤖 Applications

📟 Display interface for Arduino and Raspberry Pi
📊 Data logging and system monitoring
🤖 Embedded systems and IoT dashboards
🧪 Prototyping with limited I/O pins

⚠️ Notes

⚙️ I2C address is typically 0x27 or 0x3F (may vary by board)
🔁 Use LiquidCrystal_I2C or similar Arduino libraries
🔎 Use I2C scanner sketch to find correct address

✨ Key Advantages

🧵 Only 2 wires needed vs 6+ for parallel LCD
🔧 Quick integration with most I2C libraries
🧊 Compact PCB ideal for space-constrained builds
🔌 Supports 5V and 3.3V logic levels