NX3224F024 – Nextion 2.4″ Discovery Series HMI Touch Display

The Nextion NX3224F024 is a compact 2.4-inch Human Machine Interface (HMI) display module from the Nextion Discovery Series, designed to simplify graphical user interface development for embedded systems and microcontroller-based applications. It integrates a TFT LCD touchscreen, onboard processor, and memory into a single self-contained unit, enabling standalone operation without requiring external graphics processing. This module features a 320 × 240-pixel resistive touchscreen, providing reliable single-touch input suitable for industrial control panels, IoT devices, and embedded monitoring systems. It communicates with external controllers such as Arduino, ESP32, and other microcontrollers through a simple UART serial interface, significantly reducing wiring complexity and development effort. The Discovery Series is designed for cost-effective HMI solutions, offering improved MCU performance, efficient image handling, and a simplified text-based command structure. Users can design complete graphical interfaces using the Nextion Editor software, which supports drag-and-drop UI creation with components such as buttons, sliders, text fields, gauges, and images. Once programmed, the display operates independently, rendering all graphical elements internally while responding to simple serial commands from the host controller. This architecture minimizes processing load on the main system and allows for faster development of interactive control interfaces. The NX3224F024 is widely used in applications such as basic industrial control systems, Arduino/ESP32 projects, sensor dashboards, and entry-level IoT interfaces where a small, efficient, and low-power touchscreen solution is required.