Nextion 2.8 inch HMI TFT Intelligent Display NX3224F028 Discovery Series for Arduino & ESP32

Overview

The Nextion 2.8″ Discovery Series (NX3224F028) is a cost-effective, high-performance Intelligent HMI touch display module. Unlike standard SPI TFT screens that consume all your microcontroller’s RAM and processing power to update a simple image, Nextion displays feature an onboard ARM Cortex-M0+ processor and 4MB of Flash storage.

Using the free Nextion Editor Software, you can drag-and-drop components (buttons, text boxes, sliders, gauges) to build a beautiful GUI on your computer. Once uploaded to the screen, your microcontroller communicates with it using simple TTL Serial (TX/RX) commands. It is the ultimate solution for building complex menu systems, smart automation hubs, or data loggers.

Key Features

• Intelligent Offloading: Built-in CPU handles all the complex graphics rendering, touch tracking, and font generation.

• Resistive Touchscreen: Accurate touch feedback that responds beautifully to fingers or a plastic stylus.

• 4-Pin UART Interface: Requires only 4 connections: VCC, GND, TX, and RX. No complex SPI pin management or wiring mess.

• Nextion Editor Software: Free design suite featuring operational simulators, custom font creators, and multi-component UI assembly.

• Robust Hardware: Part of the Discovery line, offering a balanced price-to-performance ratio for students and entry-level industrial systems.

Technical Specifications

Why Nextion instead of Standard SPI TFTs? 

• Memory Saver: Saves thousands of lines of graphical programming code on your main microcontroller.

• Speed: The screen UI updates instantly because the graphics files are stored directly on the display’s flash chip.

• Easy Prototyping: Change the UI look inside the software without rewriting a single line of your main controller’s backend code.