SparkFun 16x2 SerLCD - RGB Text (Qwiic)

The SparkFun SerLCD is a cost-effective solution for incorporating a 16x2 RGB on Black Liquid Crystal Display into your project. The product is AVR-based and serial enabled, with an overhauled PCB design that includes an ATmega328P for screen control, eliminating the need for a backpack. The display can communicate in three different ways: serial, I²C, and SPI. It's also equipped with a Qwiic connector, simplifying wire management and enabling your project to display a variety of text and numbers.

The SerLCD's onboard ATmega328P AVR microcontroller uses an 11.0592 MHz crystal for enhanced communication accuracy. It offers adjustable baud rates ranging from 1200 through 1000000, with a default setting at 9600. The firmware for the SerLCD is fully open-source, so you can customize it to suit your specific needs.

It's important to note that the SerLCD is a 3.3V device. Therefore, ensure you convert to 3.3V logic based on your chosen microcontroller or single board computer to prevent potential damage to your board.

The SparkFun Qwiic Connect System is a comprehensive ecosystem of I²C sensors, actuators, shields, and cables that streamline the prototyping process and reduce the risk of errors. All Qwiic-enabled boards employ a common 1mm pitch, 4-pin JST connector, which minimizes the required PCB space. The polarized connections also prevent incorrect hookups.

The SerLCD boasts a range of features, including a 16x2, RGB on Black Display and three communication options: Serial, I²C, and SPI. It offers adjustable I²C address control via software special commands, a Qwiic connection, and an emergency reset to factory settings. The operational backspace character and incoming buffer, which stores up to 80 characters, enhance functionality. The product also allows for pulse width modulation of backlight and contrast, enabling direct control of brightness, current consumption, and software-defined contrast amount. The open-sourced firmware and Arduino-compatible bootloader allow for updates via the Arduino IDE. The device measures 80.02x36.13x14.27mm and weighs approximately 2.2 grams.