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.
If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.
Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Based on 6 ratings:
Simple set up, easy to mount, and great examples! Piece of cake!
Just what I wanted, But not working right. I get it to print what I want, then it disappears - even after reseting. I tried three differnt setups, and It does the same thing.
Have only used it in I2C mode and it works very well.
After pip3ing the library, it works great with my RPi. The light is bright and can produce any color with RGB command. It'd be nice if it had a QWIIC socket but it can easily be mounted with the Sparkfun QWIIC adapter board (https://www.sparkfun.com/products/14495)... The legs even align with the mounting holes in the adapter.
I just needed a screen for feed back on some of the automation I was using. By using text and color I can tell the step and state of the project at all times.
I like these in conjunction with the RedBoard QWIIC as I can very simply plug the two together and have a display for my little applications. The IIC interface is a little slow for some applications so I buffer the data and then update the display when the program has time. Working that way I can use it to display near real-time data.