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When Nextion is in active Protocol Reparse mode, ucopy copies data from the serial buffer. Most HMI applications will not require Protocol Reparse and should be skipped if not fully understood.

Nextion is a Human Machine Interface （HMI） solution combining an onboard processor and memory touch display with Nextion Editor software for HMI GUI project development.

Using the Nextion Editor software, you can quickly develop the HMI GUI by drag-and-drop components (graphics, text, button, slider, etc.) and ASCII text-based instructions for coding how components interact on the display side.

Nextion HMI display connects to peripheral MCU via TTL Serial (5V, TX, RX, GND) to provide event notifications that peripheral MCU can act on, the peripheral MCU can easily update progress, and status back to Nextion display utilizing simple ASCII text-based instructions.

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Buyers should consider buying lcd based on their specific needs and budget. If lcd is a good option for buyers, you should consider purchasing lcd from the wholesalers on Alibaba.

The Enhanced touch display by Nextion 7" now comes with an even more powerful onboard processor. This diplay is compatible with most Arduino and Raspberry Pi boards and can be driven with a standard UART. Display design and visualization is done inside the free Nextion IDE. This is one of the most powerful displays on the market. This is the enhanced model.

The HMI (Human Machine Interface) Display is a cost-effective TFT touchscreen which can be controlled via an on-board serial port. The Nextion Editor is used to design an interface which is saved to a Micro SDCard and then loaded on the device. There’s quite a bit of interface logic built into the editor: you create pages and place objects (buttons, sliders, text boxes, etc.) within the page and include whatever control is needed to move between the pages you create.

Because the manufacturer claimed they were low cost, the first thing that I did was go out on Amazon to find out how much resellers were selling them for. I found the 2.4” Nextion HMI Displays for $17.99, 4.3” Nextion HMI Displays for $49.98, 7.0” Nextion HMI Displays for $79.99, and other sizes (both bigger and smaller) priced in a similar fashion. About my only complaint about what I found on Amazon is that there don’t seem to be many vendors selling the displays yet, which means they’re in and out of stock pretty quickly. Worse, there are unscrupulous vendors attempting to capitalize on the scarcity within Amazon by gouging buyers with exorbitant prices. Considering what’s going price-wise on Amazon, I’d suggest trying to buy through the ITEAD Studio Store or eBay until the Amazon vendors get their acts together. But for what you’re getting it certainly seems like a good value. Especially when you consider that the Nextion Editor will allow you to build a fully independent user interface without hooking up an Arduino or Raspberry Pi to control it.

The first thing I did was install the Nextion Editor and start tinkering around. It didn’t take me very long to figure out how to add a page, put some naughty words on that page, and get that profanity displayed on the 2.4” Nextion HMI Display. I learned a few things in the process:

From within the editor, you needed to “compile” your file and locate the build output (File –> Build Output) to find the *.tft file that gets copied to your Micro SDCard.

Apart from the fact that the touchscreen isn’t particularly responsive, I pulled this off pretty simply. I found the editor a bit difficult to get started with, but once I got a bit more familiar with the display I was able to create this example in just a few minutes. Naturally, this was just my initial attempt at using the Nextion HMI Display. My basic interface wasn’t really good for much at all unless you’re an Animal fanboy like I am! In order to abstract the most value from the Nextion HMI Display, I’d want to be able to control it from an Arduino.

I am thoroughly impressed with the Nextion HMI Display. The device falls right in a gap that I think exists between the Arduino and RaspberryPi devices; the Arduino lacks the processing capability to power much in the way of displays. Some of that can be offloaded onto the Nextion HMI Display. Along those same lines it can be done relatively inexpensively, and the Nextion Editor makes creating that interface a bit simpler. If you are an Arduino tinkerer, I think at the very least you should have one of the 2.4” HMI Displays in your inventory of spare parts.

Firstly, I recently got into home brewing my own beer in the home-brewing group at TheLab.ms, a Plano-area makerspace. As a result of the home brewing I wound up building a keezer to serve our beers from. My original design was that I’d simply write on the keezer which brews are in each faucet using dry-erase markers. However, thanks to the Nextion HMI Displays, I’m now entertaining the idea of building an interactive menu that describes what’s in each tap and features some photos to set atop or mount to the keezer somewhere.

I’m pretty excited with what you can do with the Nextion HMI Displays, both as a standalone device with an interface that you design and load on it yourself, and as a “smart” display with an Arduino or RaspberryPi behind it adding additional features and functionality. The Nextion HMI Displays have a nice set of features and present quite a bit of value considering the price points of their various-sized displays.

Our product range includes a wide range of Nextion BASIC 3.5" Touch Display, Nextion BASIC 2.4" Touch Display, Nextion BASIC 2.8" Touch Display and Nextion BASIC 3.2" Touch Display.

Nextion NX4832T035 - 3.5" HMI TFT LCD Touch Display ModuleNextion is a seamless Human Machine Interface (HMI) solution that provides a control and visualization interface between a human and a process, machine, application or appliance. Nextion is mainly applied to Internet of thing (IoT) or consumer electronics field. It is the best solution to replace the traditional LCD and LED Nixie tube.

Nextion includes a hardware part (a series of TFT boards) and a software part (the Nextion editor). The Nextion TFT board uses only one serial port to communicate. It lets users avoid the hassle of wiring. We noticed that most engineers spend much time in application development but get unsatisfactory results. As a solution to this situation, Nextion editor has mass components such as button, text, progress bar, slider, instrument panel etc. to enrich the interface design. Furthermore, the drag-and-drop function ensures that users spend less time in programming, which will reduce 99% of their development workloads. With the help of this WYSIWYG editor, designing a GUI is a piece of cake.

It"s easy to adapt Nextion family HMI to existing projects. Users just need to provide it a UART. 3.5" Basic Nextion NX4832T035 HMI TFT Intelligent Display Module is a powerful 3.5"" HMI, which is member of Nextion family. Features include: a 3.5" TFT 480x320 resistive touch screen display, 16M Flash, 3.5KByte RAM, 65k colors.

Nextion NX3224T024-Generic 2.4" TFT Intelligent LCD Touch DisplayNextion is a seamless Human Machine Interface (HMI) solution that provides a control and visualization interface between a human and a process, machine, application or appliance. Nextion is mainly applied to Internet of thing (IoT) or consumer electronics field. It is the best solution to replace the traditional LCD and LED Nixie tube.Nextion includes a hardware part (a series of TFT boards) and a software part (the Nextion editor). The Nextion TFT board uses only one serial port to communicate. It lets users avoid the hassle of wiring. We noticed that most engineers spend much time in application development but get unsatisfactory results. As a solution to this situation, Nextion editor has mass components such as button, text, progress bar, slider, instrument panel etc. to enrich the interface design. Furthermore, the drag-and-drop function ensures that users spend less time in programming, which will reduce 99% of their development workloads. With the help of this WYSIWYG editor, designing a GUI is a piece of cake. It"s easy to adapt Nextion family HMI to existing projects. Users just need to provide it a UART.NX2432T024 is a powerful 2.4"" HMI, which is member of Nextion family. Features include: a 2.4" TFT 320 x 240 resistive touch screen display, 4M Flash, 2K Byte RAM, 65k colors.

Nextion NX3224T028 - Generic 2.8" HMI LCD Touch DisplayNextion is a seamless Human Machine Interface (HMI) solution that provides a control and visualization interface between a human and a process, machine, application or appliance. Nextion is mainly applied to Internet of thing (IoT) or consumer electronics field. It is the best solution to replace the traditional LCD and LED Nixie tube.

Nextion includes a hardware part (a series of TFT boards) and a software part (the Nextion editor). The Nextion TFT board uses only one serial port to communicate. It lets users avoid the hassle of wiring. We noticed that most engineers spend much time in application development but get unsatisfactory results. As a solution to this situation, Nextion editor has mass components such as button, text, progress bar, slider, instrument panel etc. to enrich the interface design.

Furthermore, the drag-and-drop function ensures that users spend less time in programming, which will reduce 99% of their development workloads. With the help of this WYSIWYG editor, designing a GUI is a piece of cake.It"s easy to adapt Nextion family HMI to existing projects. Users just need to provide it a UART.

NX3224T028 is a powerful 2.8"" HMI, which is member of Nextion family. Features include: a 2.8" TFT 320x240 resistive touch screen display, 4M Flash, 2KByte RAM, 65k colors. Features of Nextion NX3224T028 - Generic 2.8" 320 x 240 Resolution

Nextion NX4024T032-Generic 3.2" HMI TFT Intelligent LCD Touch DisplayNextion is a seamless Human Machine Interface (HMI) solution that provides a control and visualization interface between a human and a process, machine, application or appliance. Nextion is mainly applied to Internet of thing (IoT) or consumer electronics field. It is the best solution to replace the traditional LCD and LED Nixie tube.Nextion includes a hardware part (a series of TFT boards) and a software part (the Nextion editor). The Nextion TFT board uses only one serial port to communicate. It lets users avoid the hassle of wiring. We noticed that most engineers spend much time in application development but get unsatisfactory results. As a solution to this situation, Nextion editor has mass components such as button, text, progress bar, slider, instrument panel etc. to enrich the interface design. Furthermore, the drag-and-drop function ensures that users spend less time in programming, which will reduce 99% of their development workloads. With the help of this WYSIWYG editor, designing a GUI is a piece of cake. It"s easy to adapt Nextion family HMI to existing projects. Users just need to provide it a UART.NX4024T032 is a powerful 3.2"" HMI, which is member of Nextion family. Features include: a 3.2" TFT 400x240 resistive touch screen display, 4M Flash, 2KByte RAM, 65k colors.

HMI module (Human-Machine Interface) with a color LCD TFT 2.4" display with a resolution of 320x240 px. It is equipped with a resistive touch panel that ensures user interaction with the system being built. The panel has a built-in microcontroller that controls the display, a microSD card slot and Flash memory The module communicates with an external driver via the UART interface, thanks to which it can work with popular development kits, such as Arduino, Raspberry Pi or STM32. It is powered with a voltage of 5 V using the attached module and cables. all projects where a user control panel is required, e.g. on production lines.

Designing the appearance and functionality of the graphical user interface (GUI) with Nextion NX3224T024 is fast and intuitive thanks to the dedicated Nextion Editor graphic editor. It allows you to prepare the interface using universal blocks, buttons or sliders, thanks to which the user saves time and significantly speeds up the device design process. The project is uploaded to devices via the UART interface. The exact editor"s manual is available on the manufacturer"s website.

Nextion is a Seamless Human Machine Interface (HMI) solution that provides a control and visualization interface between a human and a process, machine, application, or appliance. It is the best solution to replace the traditional LCD and LED Nixie tubes.

Nextion includes the hardware part (a series of TFT boards) and the software part (the Nextion editor). The Nextion TFT board uses only one serial port to communicate. It lets you avoid the hassle of wiring. We notice that most engineers spend much time on application development but get unsatisfactory results. In this situation, Nextion editor has mass components such as button, text, progress bar, slider, instrument panel, etc. to enrich your interface design. And the drag-and-drop function ensures that you spend less time in programming, which will reduce 99% of your development workloads. With the help of this WYSIWYG editor, designing a GUI is a piece of cake.

NX4827T043 is a powerful 4.3” HMI, which is a member of the Nextion family. Features include a 4.3″ TFT 480×272 resistive touch screen display, 16M Flash, 2KByte RAM, 65k colors.

Nowadays home automation is a trending topic among electronic enthusiasts and even the mass population. People are busy with their life challenges, so an electronic device should take care of the home instead! The majority of such devices need internet or Wi-Fi for connectivity or they don’t offer a user-friendly GUI, but I decided to design a standalone wireless monitoring/controlling unit that can be adjusted using a graphical and touch-controlled LCD display.

The device consists of a panelboard and a mainboard that communicate using 315MHz (or 433MHz) ASK transceivers. The panel side is equipped with a high-quality 4.3” capacitive-touch Nextion Display. The user can monitor the live temperature values and define the action threshold (to activate/deactivate the heater or cooler), humidity (to activate/deactivate the humidifier or dehumidifier), and ambient light (to turn ON/OFF the lights). The mainboard is equipped with 4 Relays to activate/deactivate the aforementioned loads.

To design the schematic and PCB, I used Altium Designer 23. The fast component search engine (octopart) allowed me to quickly consider components’ information and also generate the BOM. To get high-quality fabricated boards, I sent the Gerber files to PCBWay. I used the Arduino IDE to write the MCU code, so it is pretty easy to follow and understand. Designing a GUI using the Nextion tools was a pleasant experience that I will certainly follow for similar projects in the future. So let’s get started :-)

There is a high similarity between the circuit of the panelboard and the mainboard, the main difference is the Nextion display connector. The Nextion display uses the UART or Serial interface. C16 and C17 are decoupling capacitors.

You must install several external libraries to be able to modify and re-compile the code if you like. The first one is the Adafruit SHTC3 library [8], the second is the RadioHead Packet Radio library [9], the third is the TaskScheduler library [10], and the last one is the Easy Nextion library [11]. I have provided the complied HEX file for the panelboard [12] and the mainboard [13] as well. Below is the code for the panelboard.

As it is clear in the YouTube video, I used a 4.3” Nextion HMI Display, Intelligent Series (Model: NX4827P043-011C-Y) [15]. The TFT file is available for download [16]. You must copy-paste this file into a MicroSD card and upgrade the Flash memory of your Nextion Display. There are many tutorials about this, so I skip this step. Figure 7 shows a picture of this display.

Figure 8 shows the assembled PCB boards and the Nextion display. The smallest component package size is 0805, you shouldn’t have any problem in soldering the components, however, if you have some difficulties to purchase the components or there is no time for hand soldering, you can order the boards assembled.

Nextion NX8048T050 – 5.0″ LCD TFT HMI Intelligent Touch Display is a seamless Human Machine Interface (HMI) solution that provides a control and visualization interface between a human and a process, machine, application or appliance. Nextion is mainly applied to the Internet of Things (IoT) or the consumer electronics field. 5 Inch HMI Touch Display is the best solution to replace the traditional LCD and LED Nixie tubes. Nextion includes a hardware part (a series of TFT boards) and a software part (the Nextion editor). The Nextion TFT board uses only one serial port to communicate. Nextion TFT Display lets users avoid the hassle of wiring. We noticed that most engineers spend much time on application development but get unsatisfactory results. As a solution to this situation,Nextion editor has mass components such as button, text, progress bar, slider, instrument panel, etc. to enrich the interface design. Furthermore, the drag-and-drop function ensures that users spend less time in programming, which will reduce 99% of their development workloads. With the help of this WYSIWYG editor, designing a GUI is a piece of cake. It’s easy to adapt Nextion family HMI to existing projects. Users just need to provide it a UART.Nextion 5.0” HMI Arduino TFT Lcd Intelligent Display Module Screen with integrated 4-wire Resistive Touch Panel 800×480 NX8048T050 is a powerful 5.0” HMI, which is the member of Nextion family. Features include a 5.0″ TFT 800×480 resistive touchscreen display, 16M Flash, 2KByte RAM, 65k colors

Best Online Shopping Website For 5 Inch LCD HMI TFT Intelligent Touch DisplayModule Nextion NX8048T050 In Cheap Price In Lahore Islamabad Karachi Faislabad Multan Sukkur Quetta Peshawar Rawalpindi Gujranwala and all Over Pakistan

2.4 inch Nextion TFT HMI LCD Touchscreen NX3224T024is a Seamless Human Machine Interface (HMI) solution.2.4 inch Nextion TFT HMI LCD Touchscreen NX3224T024that provides a control and visualization interface between a human and a process, machine, application or appliance. Nextion is mainly applied to the Internet of thing (IoT) or the consumer electronics field. It is the best solution to replace the traditional LCD and LED Nixie tube.

Nextion includes a hardware part (a series of TFT boards) and a software part (the Nextion editor). The Nextion TFT board uses only one serial port to communicate. It lets users avoid the hassle of wiring. We noticed that most engineers spend much time in application development but get unsatisfactory results. As a solution to this situation, Nextion editor has mass components such as button, text, progress bar, slider, instrument panel etc. to enrich the interface design. Furthermore, the drag-and-drop function ensures that users spend less time in programming, which will reduce 99% of their development workloads. With the help of this WYSIWYG editor, designing a GUI is a piece of cake.

Best Online Shopping website for 2.5 inch Nextion TFT HMI LCD Touchscreen NX3224T024 in cheap price in Karachi, Lahore, Islamabad, Rawalpindi, Sukkur, Peshawar, Multan, Quetta, Faisalabad and all over Pakistan.

After using a 3.5 inch Nextion display for building a thermostat, I quickly envisioned using these displays with my latest version of a digital clock. The Nextion display is a leap forward in LCD touch displays. The built-in microprocessor makes building a professional looking touch display interface quite easy and takes a lot of overhead off the microprocessor connected to the display.

If you aren’t familiar with the Nextion displays, you should refer to Mike Holler’s excellent series of articles on these in previous issues of Nuts & Volts. The learning curve for these displays is a little steep and these articles are a great help. I haven’t used the Nextion library in my projects but rather have sent and received direct commands to the Nextion displays through the serial interface.

Nextion displays come in a variety of sizes with different capabilities and features. My digital clocks used the 3.5, 5, and 7 inch sizes. The 3.5 and 5 inch models used are the Nextion basic model while the seven inch is the intelligent model. The Nextion web page at

A four-pin header is on the PCB for connecting the Nextion display. The Rx line on the Nextion display goes to the Tx (pin 17) on the ESP32 and Tx on the Nextion display to Rx (pin 16). The Nextion displays come with a wire connector that has mating connectors for header pins. The DS3231 RTC board has four pads provided at the opposite end of the board from the header pins. A four-pin header is soldered into these pins and then the long ends of the header pins are soldered into the PCB. The socket for the battery on this board should face up. The battery isn’t needed as the time is obtained from the Internet every minute.

The procedure I used for writing software for the clock functions and communicating with the Nextion display was to first program a Nextion display page (Figure 3) using the Nextion Editor and then add code for the ESP32 in the Arduino IDE (integrated development environment) to utilize the Nextion display page.

The first page of the Nextion display, page 0, has a background image and four textboxes numbered t0 to t3 and is laid out bottom to top. Textbox 0, t0 in the Nextion program is at the bottom of the page and was made as large as possible because it displays the current time. The three textboxes above the time are used to display the city name of the home location, date, day of the week, sunrise, sunset, and the local temperature and humidity from the BME280.

A string is created using the hour, minute, and second variables and is then added to the string page0.t0.txt”. The closing quote marks are added. So, what we’re sending is page0.t0.txt=”12:34:56” where in our program we use the \” to define a quote mark which is inside the quote marks that define the string. This is a standard format for sending a string to a textbox in the Nextion display.

Each textbox needs a font associated with it; the font number is selected in the Attribute window in the lower right of the Nextion Editor after clicking on a specific textbox. Fonts must be created with the Font Generator (Figure 4) which is found in the Tools menu.

A selection is made from the list of fonts available on your computer running the Nextion Editor. Its height, or size, is also selected and there’s a checkbox for making it bold.

Your available fonts will appear in the Fonts window by clicking on the Fonts tab at the very bottom left of the Nextion Editor. Once fonts are created, they can be selected for any textbox on any page.

The state of a dual-state button is shown in the small textbox to the right. The Home Weather button jumps to page 2, where the home location can be chosen. The Weather Page button jumps to page 3, the weather page. The Picture Frame button jumps to page 4, which displays a series of images that have been added through the Nextion Editor. The Colors button jumps to page 5, where colors can be selected for the textboxes on page 0.

Notice here that page 0 of the Nextion display was used by sending differing text to the appropriate textboxes. The use of page 1 is quite different. The dual-state buttons send a Component ID to the ESP32 microcontroller, telling it which button was pressed. This is programmed in the Nextion Editor by checking the Send Component ID box located in the Event window.

When the Component ID is received by the ESP32, the current state is echoed back as a single character to the Nextion display and shown in the small textboxes to the right of the dual-state buttons. The Component ID is received in the mySerialEvent() function and then is passed to the get_Nextion_command() function The remaining five buttons and the brightness slider are all programmed in the Nextion Editor. Their actions only affect things in the Nextion display so the ESP32 doesn’t need to deal with these actions.

Pressing the Home button jumps to page 0. To program this into the Nextion display, the Home button is selected and the Nextion command “page 0” (without the quotes) is entered in the Events window of the Nextion Editor after selecting the Touch Release Event button. For the Home Weather, Weather Page, Picture Frame, and Colors buttons, the Nextion command for the Touch Release Event is page 2, page 3, page 4, and page 5, respectively. With the Brightness slider, h0, we finally get into writing a small piece of code for the Nextion display.

As the slider is moved, the dim system variable that controls the brightness of the Nextion display is changed. The value of h0 can range from 0 to 100, but 20 was chosen as the darkest allowed. This system variable is documented in the Instruction Set page which is accessed from the Help tab of the Nextion Editor.

It should be noted here that the majority of buttons on page 1 create actions solely contained within the Nextion display itself, without intervention of the ESP32 microcontroller. This is one of the great advantages of the Nextion displays. The built-in Nextion display microcontroller can take care of many of the desired changes we want in the Nextion display.

When one of the buttons is pressed, the Component ID of that button is sent to the ESP32. So, what does the Component ID actually look like when sent to the ESP32? The easiest way to see this is to use the Debug tool in the Nextion Editor.

Each second the program checks to see if a string of characters has been sent from the Nextion display. If so, the characters are stored in an array called bstring[] and then the get_Nextion_command() function is called.

The memory available allows over 40 pictures to be displayed. All pictures used with a 3.5 inch Nextion display (which are full frame) should measure 480 x 320 pixels.

My pictures consist of the usual family, myself at travel locations, some scenery, and a few birds. The .HMI and .TFT files created by the Nextion Editor (and available in the downloads) will contain my pictures.

To substitute your own, first resize your pictures to 480 x 320 pixels. In the Nextion Editor, pictures are imported in the lower left window. If the heading doesn’t show Picture, then click on the Picture tab at the bottom of the window. Pictures are added with the plus symbol and deleted with the minus symbol (Figure 10).

It should be noted here that all this code is handled by the Nextion microcontroller, so the ESP32 doesn’t have to use any of its processing time to deal with these colors.

The seven inch Nextion display I purchased was from the Intelligent series, which has additional features. The seven inch displays are 800 x 480 pixels in size.

Digital clocks made with Nextion displays are a great design. The hardware needed is reduced compared with an LED display, which requires either hardware drivers like TTL 7447s or a scanning structure that creates overhead for the microcontroller.

The Nextion display provides numerous components that enhance the appearance of the display and images are available for backgrounds or use with components.

Because of the sophistication of the display, the amount of software that needs to be written to exploit this increases. The pages that appear in the display itself must be programmed with the Nextion Editor. The attached microcontroller also needs additional code to exploit the Nextion display

The Nextion display will not only send things like Component IDs you have programmed into the display but will also send status and error information.

Check the Instruction Set page from the Help Menu of the Nextion Editor for these codes. If the variable debug_min is set to true (its default value), all data sent from the Nextion display will be echoed to the Serial Monitor.

Check the connections to the BME280 board on the Nextion display. Looking at the PCB with the USB connector on the ESP32 to the right and the volume shaft on the PAM8403 to the left, the four-pin header for the BME280 is laid out horizontally at the bottom of the board and has the power pins on the right. The four-pin header for the Nextion display runs vertically and has the power pins at the top.