The Nextion HMI displays They are an advanced solution for the development of human-machine interfaces, simplifying the design and implementation in electronic projects. Thanks to its UART connectivity, these screens can be easily integrated into projects with Arduino, Raspberry Pi and other embedded systems, eliminating the need for complex wiring.
In this article, we will explore in depth the technical characteristics of the different versions of Nextion HMI screens, including its resolution, the memory, connectivity y compatibility, to help you choose the best option for your project.
What is a Nextion HMI display?
The screens Nextion HMI They are modules designed to facilitate the creation of graphical interfaces in electronic devices. Unlike other traditional displays used with Arduino or Raspberry Pi, Nextion displays feature their own processor y They are programmed using the Nextion editor, which allows you to design the interface without the need for writing complex code.
Main technical characteristics
Nextion displays are available in different colors. sizes y resolutions, from the most compact 2.4″ to 7″ models. Below we detail their main specifications:
- Available resolutions: 320×240, 480×272 and 800×480 pixels.
- Colors: Supports up to 65K RGB colors.
- Touch screen: Most models include resistive touch panel 4-wire.
- Connectivity: Communication through UART (TTL), allowing easy integration with microcontrollers.
- Memory: 4MB to 16MB Flash for storage bar code y graphics.
- microSD support: They include a slot for microSD card to load firmware and additional resources.
- Adjustable brightness: From 0 to 230 nits, depending on the model.
- Energy consumption: It varies between 90mA and 410mA depending on the model.
- Compatible with: Arduino, Raspberry Pi and other devices that support UART.
Nextion display models
There are several versions of Nextion screens on the market, adapted to different needs:
Nextion 2.4″ (NX3224T024)
- 320 x 240 resolution.
- Resistive touch screen.
- UART communication interface.
- Adjustable brightness up to 180 nit.
Nextion 4.3″ (NX4827T043)
- Enhanced resolution of 480 x 272.
- Resistive touch panel.
- Larger display area.
Nextion 5.0″ (NX8048T050)
- 800 x 480 resolution.
- 16 MB Flash memory.
- Power consumption 410mA.
- Integrated microSD card.
Nextion 7.0″ (NX8048T070)
- Large screen with 800 x 480 resolution.
- True RGB 65K colors.
- 16 MB flash memory.
- Compatible with multiple platforms.
Advantages of using Nextion screens
Nextion displays offer multiple expected benefits For developers and engineers:
- Easy integration: They communicate using UART, which simplifies the connection with microcontrollers.
- Professional graphical interface: It allows you to design advanced interfaces without the need for complex programming.
- Support for graphics and animations: Thanks to their internal memory, they can store custom images and graphics.
Nextion Editor: Creating graphical interfaces
A key aspect of Nextion is its graphic editor, which allows you to design interactive screens without writing code. Some features of the editor include:
- Graphic components such as buttons, sliders and progress bars.
- Tools of drag and drop to facilitate design.
- Simulator to preview the interface before loading it to the device.
How to choose the best Nextion display for your project
When selecting a Nextion display, you should consider:
- Size and resolution: Depending on the level of detail and space available in your project.
- Required memory: Models with more flash memory allow for more complex interfaces.
- Energy consumption: For battery-powered projects, choose lower-consumption models.
Nextion HMI displays are an excellent solution for projects that require interactive graphical interfacesWith their UART connectivity, multi-platform support, and simplified graphical editor, they allow developers to create attractive interfaces in a simple way. By knowing their features and available models, you can choose the perfect option according to the needs of each project.