It also provides details to the various command formats that are used to send Nextion button press information or other data. This wiki information has been updated to include the hardware UART serial features that were added late Display sizes for both families ranges from 2.
The Enhanced version has all the capabilities of the basic model, but has more memory, faster processor, and GPIO. Please note that the examples shown in this wiki have been tested on the basic version. In addition to the two product families, there are also region specific models.
More specifically, there's the Chinese market TJC series supported by tjc To be blunt, unless you have a project that specifically requires the Chinese market TJC display, our recommendation is to use the global market NX series.
Nextion TFT screen connected to an ESP8266, OpenWeatherMap and CloudMQTT #2
Be aware that some sellers do not specifically mention the exact model number. If you are unable to confirm the model information then it is advisable to choose a different supplier. Name: Enter the device's name here 40 characters maximum. This connects to the Nextion's TX pin. This connects to the Nextion's RX pin. Both the Nextion and ESP utilize 3. However, reliability of receiving characters sent from the Nextion may suffer due to ESPEasy's background interrupt conflicts.
So using this method requires extra coding to ensure that ESPEasy correctly receives Nextion's serial data. Hardware Serial is extremely reliable and can support a variety of baud rates. Furthermore, it requires disabling ESPEasy's serial log feature; This is automatically done when hardware serial is chosen.
Omitting the transistor will prevent the ESP from booting correctly! Advice Tip: Despite the extra work, the hardware serial method is strongly recommended. If all these conditions cannot be met then soft serial must be used. Baud Rate: Select required serial baud rate. This setting applies only to hardware serial. Line N : Up to ten different Nextion command statements can be created that automatically execute at each timer interval. This provides a convenient way to periodically populate your Nextion display with data from the ESPEasy system variables.
Here's an example that updates Progress Bar j1 on page Be mindful that Nextion's Progress Bar component expects an integer value that ranges from 0 to it does not support float values.
Nextion and ESP8266
A device's value can be easily converted to integer precision by setting the Decimal entry to zero 0 in the Values section of a device plugin. Resend Values at Interval: When selected, the idx and value data is resent at each interval time.
Typical applications would leave it unchecked disabled. Send to Controller: If selected the idx and value data will be automatically sent by the active controller using its configured protocol. Interval: Enter the repeating interval time in seconds ; Set to zero 0 to disable the timer.
At each interval time period the Nextion Command Statements are executed. If the Resend Values is enabled then idx and value data are also resent at the interval. Name 1: idx is the main Index key variable. For example, it can be a unique number that is sent by a Nextion touch button that has been is pressed or released. But it is not limited to that purpose; It may be used for any data that needs to be passed from the Nextion display to ESPEasy.
Name 2: value is a sub-variable related to idx. For example, it could contain "1" when a specific Nextion button is pressed, or a "0" when the button is released. The value variable can be ignored if it is not needed.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. Nextion Arduino library provides an easy-to-use way to manipulate Nextion serial displays. Users can use the libarry freely, either in commerical projects or open-source prjects, without any additional condiitons. To get your Nextion display, please visit iMall. To discuss the project? Request new features?
Report a BUG? Latest version is unstable and a mass of change may be applied in a short time without any notification for users. Commonly, it is for developers of this library. Release version is recommanded for you, unless you are one of developers of this library.
If your complete your work, it will be a wise choice to disable Debug Serial. If you want to change the default serial to debug or communicate with Nextionyou need to modify the line in configuration file:. If your board has only one hardware serial, such as UNO, you should disable dbSerial and redirect nexSerial to Serial Refer to section: Serial configuration. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
Sign up. No description, website, or topics provided. HTML Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit 5a5cf0a Jan 6, Suppported Mainboards All boards, which has one or more hardware serial, can be supported.
Note: the default configuration is for MEGASo a parcel arrived for me this morning in the post. A Nextion display. And what is that, you may well ask? Think of something like a thermostat or really any home control situation, at some point you have to stop sending text commands from an expensive PC and reduce the operation down to neat and tidy button pushing so that everyone else in the house can actually participate in your invention!
Now of course, today, you could choose to use a second hand phone or tablet for your wall-mounted family-friendly display and control panel… OR you can use a touch-sensitive display. And so it was that my friend introduced me to the Nextion displays. Essentially, on a PC you run a free editing program, tell it where you want buttons, text and images and what should happen when you press the buttons.
The board has only 4 pins — power 5vground, serial in, serial out. Press a button and stuff comes out of the serial pin at logic levels and baud. No, far from it.
In my initial trials. The board has another advantage over alternatives — the whole thing is very THIN and so will easily fit into a nice slim wall mounted case. You could choose to run the board serially — OR via something like an ESP and that is almost definitely what I will be doing.
I have to say that my first experience suggests that the translations have some way to go. The simplest thing you can do is have a button send something out of the serial port when you press it. With the new software you build up commands and add a special command at the end to send everything out of the buffer.
That in itself makes testing interesting as a simple ASCII terminal might have difficulty with the terminating characters.
Kind of — the manual needs a lot of work — but I guess it is early days yet — as long as they keep improving things, this little display could well be a winner. Seems like major overkill to me not to mention the cost. An ESP talking to one of these devices, with k programming space on the ESP, it seems to me one could accomplish one hell of a lot! The text is encoded to be the same as my home control. Right now you may want to consider this a work in progress — SO many possibilities but not without pain it would seem.This post is an introduction to the Nextion display with the Arduino.
It is a great solution to monitor and control processes, being mainly applied to IoT applications. The Nextion has a built-in ARM microcontroller that controls the display, for example it takes care of generating the buttons, creating text, store images or change the background. The Nextion communicates with any microcontroller using serial communication at a baud rate.
To design the GUI, you use the Nextion Editor, in which you can add buttons, gauges, progress bars, text labels, and more to the user interface in an easy way. We have the 2. You can grab a Nextion basic model, or a Nextion enhanced model.
The Nextion enhanced has new features when compared with the basic model:. The best model for you, will depend on your needs. Additionally, this is the most used size, which means more open-source examples and resources for this size.
You can check Maker Advisor website to get your Nextion display at the best price — just click the links below:. To get started with Nextion, first you need to install Nextion Editor. You can either download the. Follow the next steps to install the library:. To make it work for Arduino Uno, you need to do the following:.
Connecting the Nextion display to the Arduino is very straightforward. These pins are labeled at the back of your display, as shown in the figure below. You can power up the Nextion display directly from the Arduino 5V pin, but it is not recommended.
Working with insufficient power supply may damage the display. So, you should use an external power source. The best way to get familiar with a new software and a new device is to make a project example. You can use the preceding links or go directly to MakerAdvisor. After following the instructions, you should be able to complete the user interface yourself.
Additionally, we provide all the resources you need to complete this project. Click here to download all the files. Give it a name and save it. Then, a window pops up to chose your Nextion model, as show in the figure below. Or you can import the. HMI file for this project. After selecting your display and the orientation, just click the Ok button.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. Nextion Arduino library provides an easy-to-use way to manipulate Nextion serial displays. Users can use the libarry freely, either in commerical projects or open-source prjects, without any additional condiitons.
Especially when Software serial is used, Serial message quality can be bad and then functionality is not stable Don't power Nextion display from NodeMcu board, because Nextion takes guite mutch of current, and NodeMcu internal power requlator is not good.
Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. HTML Branch: master.
Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. This branch is 31 commits ahead of itead:master. Pull request Compare. Latest commit. Latest commit abfa Apr 12, Introduction Nextion Arduino library provides an easy-to-use way to manipulate Nextion serial displays. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window.
Jan 6, Small changes in examples. Feb 27, Apr 5, Dec 8, Feb 25, Issue 2 corrected, readBytes re-implemented. Jan 18, Nov 28, Dec 1, ReadBytes function corrected.
Apr 12, Really, that simple. The development kit for the Nextions is online so all you need is the actual display. Getting a board that is a comfy fit is another matter and it looks like Guy has taken on this challenge — if you want to know more — reply in here and Guy will be looking in. I think I may had a specific use for this board — I have a high end control panel for my heating but upstairs nothing — so take this board, put it in a box, have the buttons send MQTT messages and receive a temperature update and you have a tiny, tidy little ancilliary controls.
So you use their web environment to put buttons down and backgrounds and sliders etc — preferably using your own graphics where possible as the Nextion imagery is a bit naff. Pressing a button sends out a string of your choosing out of the serial port with FFF on the end. My only gripe is the slow pace of development of the Nextion online editor….
Peter, bezels not boxes?
You should mention that Guy is offering this board on Kickstarter. He currently has 16 days to go, and is short of his goal. Someone got a link? I have. Sorry Pete, Just getting to this now as it is am here on the west coast of the US.
Thanks for taking your time to do this. The goals for NextDev is to make UI development easy. Also, I wanted an always on, always connected UI. The sample I sent you has the 2. Please note that the Kickstarter will come with a 3.
This is not a money maker for me. This leaves the ESP to focus on WiFi and network protocol stacks as well as high level application logic. You can see in the Kickstarter demo how snappy the performance is.
I found a really cool article on Hackaday. I posted a link to this on one of my Kickstarter update message posts. In the next week I am going to post a new demo video showing how external events can be used to control UI components on the NextDev. This could be used to provide context sensitivity i. MQTT messaging telling the display which page to render, etc.
I already have a nextion lcd, like all the people that supported nexion campain, so why you not put on your campain also the only esp board? You will have many customer than now, because the LCD campains was succesfully so many, many people need the board without the LCD. Re containers …. Would these bezels be any good?Add the following snippet to your HTML:. Read up about this project on.[DEMO] Nextion Display with ESP8266 - Touchscreen User Interface for Node-RED
What is WIoT-2? I use it as a cloud-connected IoT info center of sorts mounted near our front door. It is a culmination of information my wife or I often look for either on our way out of the house, or when we come home. Read on to find out more about how I built it.
Full write-up. I came across the Nextion display over a year or so ago during their Indiegogo campaign. In hindsight I regret that decision. Itead hit the nail on the head with this display as far as I am concerned. It uses simple serial commands to communicate between the MCU and the display — which is perfect for my needs and I think most makers like myself. You can also setup multiple page views to make a very robust visual interface. Refresh and image load rates are fast as well.
The concept of using their HMI and how you put graphics and text elements is a lot like object oriented programming, so it was easy to pick up.
After spending countless hours coding a prior project using the RA controller, the Nextion is a walk in the park and makes graphical layout and interaction much easier than any other I have dealt with. Anyway, enough on this. One of the best things about this project is how easy it is to put together. Easy peasy! This project takes advantage of both Serial ports. Well, not exactly. More on that in a bit. The only trick is that you cant have the Nextion powered when uploading sketches to the Node.
I solved this by inserting a latching switch on the Nextion 5V power supply. Also ensure your power supply has sufficient current to power the Nextion, your MCU and sensors.