I2C /SPI Character LCD Backpack

Overview

Simplify your character LCD connections with the I2C/SPI Character LCD Backpack from MOKWN. This compact adapter board eliminates the need for a dozen wires and pins, allowing you to control your 16x2 or 20x4 character LCD using just two wires (I2C) or a few more (SPI). Perfect for Arduino projects, this backpack frees up valuable I/O pins for other sensors and actuators.

Key Features

• I2C and SPI Support: Choose your preferred interface—I2C for minimal wiring (2 pins) or SPI for higher speed.
• Backlight Control: Onboard potentiometer for easy contrast adjustment and backlight control.
• Wide Compatibility: Works seamlessly with 16x2 and 20x4 character LCDs.
• 5V/3.3V Logic: Compatible with both 5V and 3.3V microcontrollers.
• Compact Design: Small footprint fits neatly behind your LCD.

Technical Specifications

• Interface: I2C and SPI
• I2C Address: 0x27 (default, solder jumper selectable)
• Operating Voltage: 3.3V - 5V
• Compatible LCDs: 16x2, 20x4 (HD44780-based)
• Contrast Adjustment: Onboard potentiometer
• Dimensions: 41mm x 19mm

Applications & Use Cases

• Arduino and Raspberry Pi projects
• Home automation displays
• IoT devices and smart meters
• Robotics and automation interfaces
• Educational electronics kits

What's Included

• 1x I2C/SPI Character LCD Backpack

Compatibility

• Works with Arduino, Raspberry Pi, ESP32, ESP8266, and any microcontroller with I2C or SPI support.
• Designed for 16x2 and 20x4 HD44780-based character LCDs.

MOKWN Recommendation

For a seamless experience, pair this backpack with our 16x2 or 20x4 character LCDs. It's a must-have for any maker looking to reduce wiring complexity and speed up prototyping.