Display Nextion Intelligent 7" 800x480 NX8048P070-011R resistive touch panel

The Nextion Intelligent NX8048P070-011R is the perfect display for quick HMI projects using readily available tools.

The display is controlled via the UART serial bus. The display is recommended for Arduino, Raspberry PI and systems with ESP8266 microcontrollers.

If you need to quickly design an interface with buttons, charts, various controls and allowing for easy operator input then you will find the answer in the Nextion series of products.

Nextion displays are divided into three groups in terms of sophistication, hardware capabilities and computing power.

1. Basic - the basic version.
2. Enhanced - compared to Basic includes eprom memory, GPIO lines, RTC clock.
3. Intelligent - compared to Enhanced contains many new advanced graphic controls.

 

Specifications of the Nextion Intelligent NX8048P070-011R display on display:

• Size: 7.0″
• Resolution: 800*480
• Touch panel: resistive
• Number of colours: 65536
• Flash memory: 128 MB
• RAM: 512KB
• MCU clock: 200 MHz
• EEPROM memory: 1024 Byte
• Number of GPIOs: 8
• Real-time clock: YES
• Enclosed case: NO

 

 

Nextion Editor
The graphic layout of the screen and the functional elements can be designed very easily and quickly with a free program on your computer.

Each screen can contain a number of functional elements, known as widgets, which include:

• Text: a text field which can be modified while the display is running.
• Number: a numerical field which can be modified both via the microcontroller and the interactive keyboard on the display.
• Button: a button. Both pressing and releasing a button is easy to register via the microcontroller.
• Progressbar: a progress bar. The value of this bar can be easily set with the appropriate command.
• Picture: allows the creation of a screen background or the insertion of image fragments anywhere on the screen.
• Gauge: is an analogue pointer with a single pointer.
• Waveform: used to draw up to four graphs.
• Slider: a slider with which you can set various parameters, variables in the programme.
• Checkbox : A checkbox. Each touch changes its state to the opposite.
• Combobox: drop-down list.
• Video: for inserting videos.

Use the mouse to insert the functional elements you will need on the screen and to determine their size on the screen and position.

 

 

 

The finished project prepared in the Nextion Editor software can be transferred to the display in two ways:

1. Uploading the appropriate project file to an SD card and inserting it into the display. When power is applied, the display will automatically load the design into its Flash memory. This is a good way of transferring updates to your own software via the internet.
2. If the display is connected to a computer(using a USB - TTL converter), simply click the UPLOAD button and the software will automatically load into the display via the USB connection.

How to connect the Nextion displays to the microcontroller:

With the microcontroller controlling the display it communicates via the UART serial bus so you only need, to connect only 4 pins:

• +5V: power supply
• TX: data coming out of the display (e.g. button1 is pressed) should be connected to RX of the microcontroller.
• RX: data input to the display (e.g. temperature display) should be connected to TX of the microcontroller.
• GND: supply ground

Nextion as a display for the Arduino

If the software on the microcontroller side is developed on the basis of the Arduino IDE, the manufacturer has also taken care of a lot of simplifications in this case. The Nextion display library created and made available by the manufacturer allows the elements displayed on the screen to be managed very easily. An example of the software is available on our blog.

For the power supply of the display, we prefer to use a dedicated FOCA module or the connection diagram below.

The following can be used as a power supply:

• MP1584 module
• LM2596 module
• LM7805 module

Technical support for Nextion displays.

When you buy a Nextion display you immediately have a number of technical support items:

• A great video course in Polish where we learn about the different components of the display from lesson to lesson. In this course you will find lots of details about the software of the display itself as well as the software on the Arduino side.
• On a popular electronics forum, there is an associated topic with a video tutorial where you can ask questions, present your non-working code and anything else related to technical problems with Nextion displays.
• Contact us directly by phone or email.
• Libraries for Arduino and Raspberry Pi to download from the manufacturer's website.
• STL files of the enclosures to be printed on a 3D printer downloadable from the manufacturer's website.

Kit includes:

• Nextion display
• Adapter for USB power supply
• Connection cables terminated with a plug.

Useful links:

• Please visit our blog.
• Enhanced display manufacturer's website
• Interface editing software NEXTION EDITOR
• Manual for NEXTION EDITOR
• Description of the commands supported by the NEXTION displays.
• Arduino library
• Raspberry Pi library
• STL enclosure files for 3D printing
• Video tutorial

Recommended accessories for the display:

Foca Max USB to TTL converter, designed for use with Nextion displays.

With an external power input of 8-26 V DC, the Foca Max provides a stable power source and the convenience of USB to TTL communication for all Nextion HMI display series and sizes.

An extension for Nextion Enhanced series displays. The module has 6 buttons: Esc, Enter, Left, Right, Up, Down and a buzzer and LEDs.