Nextion NX4832K035 3.5“ HMI TFT LCD TOUCH Display module

Description

Product Overview

The Nextion Enhanced NX4832K035 is a powerful, intelligent Human-Machine Interface (HMI) display module that integrates a 3.5-inch TFT LCD color screen with a resistive touch panel into a compact, ready-to-use package . Designed to provide a seamless control and visualization interface between humans and machines, this Enhanced series display is the ideal solution for IoT applications, consumer electronics, industrial automation, and embedded projects .

What sets the Nextion apart from traditional LCDs is its intelligent architecture. Unlike standard displays that require your main microcontroller to handle all graphics rendering, the NX4832K035 features a dedicated onboard processor that independently manages all graphical interface functions—drawing buttons, updating text, displaying graphs, processing touch inputs, and managing screen transitions . Your host microcontroller (Arduino, ESP32, Raspberry Pi, STM32) communicates with the display using simple ASCII text commands over a standard UART (TTL serial) interface . This approach eliminates the need for complex graphics programming and parallel wiring, dramatically reducing development time.

The Enhanced series (NX4832K035) represents a significant upgrade over the Basic series (NX4832T035). Enhancements include a faster CPU clock, built-in Real-Time Clock (RTC), 32MB flash memory (vs 4MB), 8192 bytes of RAM (vs 3584 bytes), 1024 bytes of EEPROM for user data storage, and 8 digital GPIO pins (with 4 supporting PWM) . This makes the Enhanced series suitable for standalone applications that require local data storage, timekeeping, and external device control without an additional microcontroller.

The free, drag-and-drop Nextion Editor software allows you to design your graphical user interface visually. Simply place components (buttons, sliders, text boxes, gauges, progress bars) onto the canvas, assign properties, and compile . The resulting firmware file (.tft) is uploaded to the display via microSD card. The WYSIWYG environment reduces GUI development workload by up to 99% compared to traditional methods .

Key Features

• 3.5-Inch TFT LCD Display: 480 × 320 pixel resolution (QVGA) with 65,536 colors (16-bit RGB 565), providing vivid, true-to-life visuals

• Resistive Touch Panel: Durable 4-wire resistive touch screen rated for over 1 million touches; responds to finger, gloved hand, or stylus input

• Enhanced Series Advantages: Compared to Basic models, features faster MCU clock (108MHz), built-in RTC with CR1220 battery backup, 32MB flash, 8192 bytes RAM, 1024 bytes EEPROM, and 8 GPIO pins (4 PWM capable)

• Simple Serial Communication: 4-pin UART interface (VCC, GND, TX, RX) using TTL 3.3V logic—connects directly to Arduino, ESP32, ESP8266, Raspberry Pi, or STM32

• Intelligent Standalone Operation: Onboard processor handles all graphics and touch processing independently—your host MCU only sends simple commands

• Free WYSIWYG GUI Editor: Nextion Editor software with drag-and-drop components, 25+ built-in components, font creator, and built-in simulator for debugging without hardware

• Adjustable LED Backlight: Brightness adjustable from 0% to 180 nits in 1% increments via simple serial command

• Built-in RTC (Real-Time Clock) : Maintains accurate time even when main power is off with CR1220 backup battery (sold separately)

• Expandable GPIO: 8 digital GPIO pins (IO0-IO7) for controlling external devices directly from the HMI; IO4-IO7 support PWM output

• microSD Card Slot: For firmware updates (TFT file upload). Supports FAT32 format, up to 32GB

Technical Specifications