2 x MJKDZ I2C Serial Interface Adapter Module for 1602/2004 LCD | PCF8574 Breakout Board
€5,50
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2 x MJKDZ I2C Serial Interface Adapter Module for 1602/2004 LCD | PCF8574 Breakout Board
€5,50
Shipping outside Spain costs an additional €1.
Reduce your LCD wiring from 16 pins down to just 2 using the MJKDZ I2C Serial Interface Adapter Module!
This highly efficient backpack expansion board is engineered to convert standard parallel character displays (like the 16x2 and 20x4 LCDs driven by the HD44780 chip) into smart, addressable I2C devices. By handling the heavy multiplexing tasks through a single chip layout, it frees up up to 10 digital I/O pins on your microcontroller, preventing pin starvation on complex development projects.
Equipped with a built-in high-precision multi-turn potentiometer, it allows for seamless contrast calibration. Its standard 4-pin output header provides plug-and-play compatibility with standard I2C buses.
🚀 Key Features:
- I2C Protocol Conversion: Condenses 16 parallel data lines down to 2 serial communication lines (SDA & SCL).
- Onboard Contrast Tuning: Features an adjustable multi-turn trimpot to fine-tune character visibility and backlight levels.
- Compact Backpack Layout: Slim PCB design matches the standard pin headers of 1602 and 2004 LCD modules for clean, direct soldering.
- Addressable Architecture: Integrated hardware jumpers allow modification of the I2C address to run multiple displays on the same bus.
🔧 Technical Specifications:
- Model: MJKDZ I2C Backpack
- Supported Displays: 16x2 LCD (1602), 20x4 LCD (2004) character modules
- Operating Voltage: DC 5V
- Interface Protocol: I2C / IIC (Serial Data Line SDA, Serial Clock Line SCL)
- Pin Configuration: 5V, SDA, SCL, GND
💡 Common Applications:
- Optimizing data wire connections in advanced multi-sensor Arduino and ESP8266 setups.
- Building compact desktop display panels, smart system readouts, and operational automation panels.
- Educational electronics projects focused on understanding I2C communication architectures.