SparkFun SerLCD Library

SparkFun 20x4 SerLCD - Black on RGB 3.3V (LCD-14074)

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 overhauled the design to include an ATmega328P that handles all of the screen control, meaning a backpack is no longer needed! This display can now accept three different types of communication protocols: serial, I2C, and SPI. This simplifies the number of wires needed and allows your project to display all kinds of text and numbers.

The SerLCD is Qwiic compatible! We recommend adding a Qwiic Adapter to the back of the SerLCD to get it onto the Qwiic bus.

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.

Library written by Gaston Williams and Nathan Seidle (SparkFun).

Repository Contents

/examples - Example sketches for the library (.ino). Run these from the Arduino IDE.
/src - Source files for the library (.cpp, .h).
keywords.txt - Keywords from this library that will be highlighted in the Arduino IDE.
library.properties - General library properties for the Arduino package manager.

Documentation

Installing an Arduino Library Guide - Basic information on how to install an Arduino library.

License Information

This product is open source!

Various bits of the code have different licenses applied. Anything SparkFun wrote is beerware; if you see me (or any other SparkFun employee) at the local, and you've found our code helpful, please buy us a round!

Please use, reuse, and modify these files as you see fit. Please maintain attribution to SparkFun Electronics and release anything derivative under the same license.

Distributed as-is; no warranty is given.

Your friends at SparkFun.

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