The SparkFun 16×2 SerLCD is a serial-enabled LCD that provides a simple, cost-effective way to add an RGB-on-black liquid crystal display to your project. An on-board ATmega328P microcontroller handles all screen control, eliminating the need for a separate backpack board.

The display supports three communication interfaces — serial (UART), I2C, and SPI — and includes a Qwiic connector for quick, solderless I2C connections. The open-source firmware allows full customisation of the display behaviour.

Key Features

• 16×2 RGB on Black Display – Clear, readable text with customisable RGB backlighting
• Triple Interface – Serial (UART), I2C, and SPI communication options
• Qwiic Connector – Polarised 4-pin JST connector for solderless I2C hookup
• On-Board Controller – ATmega328P with 11.0592 MHz crystal for accurate communication
• Adjustable Baud Rate – 1200 to 1,000,000 baud (default 9600)
• Open-Source Firmware – Fully customisable to suit your project needs

Specifications

• Display – 16×2 character LCD, RGB on black
• Controller – ATmega328P AVR
• Crystal – 11.0592 MHz
• Interfaces – Serial (UART), I2C (Qwiic), SPI
• Default Baud Rate – 9600
• Operating Voltage – 3.3V

Ideal For

• Displaying sensor readings and system status
• Arduino, Raspberry Pi, and microcontroller projects
• Data logging and monitoring dashboards
• Prototyping with the Qwiic I2C ecosystem

Resources

• Hookup Guide