Nextion Basic 2.4 inch HMI Touch Display NX3224T024

2.4" 320x240 resistive-touch smart HMI with onboard processor and flash; UI built in Nextion Editor, driven over UART.

₹3,000 + 18% GST

SKU: BOTBIT-DSP-13 · Best for: Product and appliance control panels with a professional touchscreen UI

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Overview

About Nextion Basic 2.4 inch HMI Touch Display NX3224T024.

The Nextion Basic NX3224T024 is a 2.4 inch 320x240 resistive-touch smart HMI display that shifts the hard work of building a user interface off your main microcontroller. It carries its own onboard processor and flash memory, so the display itself runs the UI you design and talks to your host board over a simple two-wire UART link.

You build the interface visually in the free Nextion Editor on a PC, dragging buttons, sliders, text, gauges and images onto pages, then compile and upload it to the display. Your Arduino, ESP32, STM32 or Raspberry Pi then just sends and receives short serial commands to update values and read touches, dramatically simplifying your firmware.

This approach makes the Nextion a favourite for professional-looking control panels, appliances and instrument front-ends where you want a polished touchscreen without writing low-level graphics code. As a genuine Nextion Basic-series product, the NX3224T024 is well documented and widely used in Indian product and hobby projects at around Rs 3000.

Key features

Why it stands out.

2.4 inch smart HMI TFT with 320x240 resolution and resistive touch

Onboard processor and flash memory run the UI independently of your microcontroller

UI designed visually in the free Nextion Editor (buttons, text, sliders, gauges, images)

Simple UART (serial) interface to any host: Arduino, ESP32, STM32, Raspberry Pi

Offloads graphics work from the host MCU, keeping host firmware lightweight

Onboard flash stores pages, fonts and images for the interface

Specifications

Selection facts.

Model	NX3224T024 (Nextion Basic)
Display size	2.4 inch diagonal
Resolution	320 x 240 pixels
Touch type	Resistive touch
Onboard controller	Integrated processor with flash memory
Interface	UART / TTL serial (TX, RX, 5V, GND)
Operating voltage	5V
Design software	Nextion Editor (free)
Series	Nextion Basic (T series)

Applications

Where it is used.

Product and appliance control panels with a professional touchscreen UI
Instrument and machine front-ends showing gauges, values and buttons
Home-automation and IoT control interfaces over serial
PLC-style and industrial-style HMIs for hobby and prototype builds
Menu-driven devices where the host MCU has limited resources
3D printer, CNC and equipment status and control displays

Buying guide

How to choose.

Choose the Nextion NX3224T024 when you want a polished touch interface with the least possible firmware effort on your main board. Because the display runs the UI itself and communicates over UART, even a modest Arduino can drive a rich touchscreen by sending short serial commands. This is a different philosophy from a raw TFT like the ILI9341 (BOTBIT-DSP-09), where your MCU does all the drawing.

It pairs with any host that has a UART: Arduino, ESP32, STM32, Raspberry Pi and more. You design the interface once in the free Nextion Editor, upload it to the display (via serial or microSD depending on setup), and then handle only data exchange in your host code.

Pick this Basic-series model when you need a straightforward, reliable HMI and do not require the extended GPIO or advanced features of higher Nextion series. Budget a little extra time to learn the Nextion Editor, which pays off quickly in cleaner projects.

FAQ

Common questions.

How does the Nextion connect to my microcontroller?

It connects over a simple UART serial link using just four wires: 5V, GND, TX and RX. Your host sends and receives short text commands to update the display and read touch events, so wiring and code stay minimal.

How do I design the interface?

You use the free Nextion Editor on a Windows PC. You visually place buttons, text, sliders, gauges and images across pages, then compile and upload the project to the display's onboard flash, either over serial or via a microSD card.

Which host boards are compatible?

Any board with a UART works: Arduino UNO/Nano/Mega, ESP32, ESP8266, STM32 and Raspberry Pi. Libraries and examples exist for Arduino and others, but at its core you just exchange serial commands.

Is the touch resistive or capacitive?

The NX3224T024 Basic model uses a resistive touch panel, which responds to pressure from a fingertip or stylus and registers a single touch point at a time.

Does it need my Arduino to draw the graphics?

No. That is the key advantage. The Nextion's onboard processor runs the UI itself, so your microcontroller only sends data and commands over serial. This keeps host firmware simple and frees up its resources.

What is in the box?

You receive the Nextion NX3224T024 Basic 2.4 inch HMI display. A connecting cable is commonly included; a host microcontroller and power supply are not. You will also need a PC to run the free Nextion Editor.