SparkFun 20x4 SerLCD - RGB Backlight (Qwiic)

The SparkFun SerLCD is an AVR-based serial enabled LCD that provides a simple and cost effective solution for adding a 20x4 Black on RGB Liquid Crystal Display into your project. We've seriously overhauled the PCB design on the back of the screen by including an ATmega328P that handles all of the screen control meaning a backpack is no longer needed! This display can now communicate in three different ways: serial I2C and SPI. This version comes equipped with a Qwiic connector bringing serial LCDs into the Qwiic ecosystem. This simplifies the number of wires needed and allows your project to display all kinds of text and numbers.The on-board ATmega328P AVR microcontroller utilizes 11.0592 MHz crystal for greater communication accuracy with adjustable baud rates of 1200 through 1000000 but is default set at 9600. The firmware for this SerLCD is fully opensource and allows for any customizations you may need.Note: Since the SerLCD is a 3.3V device please make sure you convert to 3.3V logic depending on your chosen microcontroller or single board computer. Otherwise you may risk damaging your board.The SparkFun Qwiic Connect System is an ecosystem of I2C sensors actuators shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch 4-pin JST connector. This reduces the amount of required PCB space and polarized connections mean you can’t hook it up wrong. Get Started with the SparkFun SerLCD Guide