According to me Nextion button is set-up properly. Nextion button. I changed this line in NexConfig. First, recheck the page ID and Object Id for 2 buttons you declared.
Are you confident about the physical pin Arduino that you are using? I do always enough confusion so I have to resume my notes about the pin name of the IDE, the pin number of the MCU and the pin number of the board. In my sketch I've wrote:. Learn more. Nextion not sending data to Arduino Ask Question.Beatles index mp3
Asked 1 year, 9 months ago. Active 1 year, 2 months ago. Viewed 4k times. Active Oldest Votes. Also, recheck Tx and Rx connections.
I hope this will solve your issue. Umer Farooq Umer Farooq 7 5 5 bronze badges. It's not a great help but it's all what now I can do. Good luck. Sign up or log in Sign up using Google.Pages: . Hi there, I am using a Nextion display for a small project. I have read the different threads on the Nextion displays here, in particular the pined one, and followed a bunch of tutorials but none of these resources helped me figure out what is blocking my progress.
I am trying to do a simple thing. When you push a button a physical push buttonit changes the image on the Nextion display. It works, as well as the other example of the link I posted above. So, so far sending datas from the Nextion to the Arduino is OK. On the other hand, the other way around doesn't work. I can't send any data from the Arduino to the Nextion.
It's my issue. To test this part, I used the code from the example above and I added a small piece of code saying that if the number returned is equal to 7, then we change the value of a box to just a random number. This part is at the very bottom. Re: Send data to a Nextion display. Hello Dyspho, From your sketch: Code: [Select]. Code: [Select]. Thank you so much Perry! I've just had a look at the specs for the Micro Arduino Micro and it has one serial port. If it's the same then I can see that being a problem that I don't know how to fix, sorry.
I guess software serial should work but I am not familiar with software serial. You'd need to know which pins software serial is using and I'm not sure I'm the right person to help with that. I have had a look at the information about software serial and this is what I think: In your original code the problem was not sending the start and finish " and not sending to the software serial port. You've modified the original code to send the " but now you are trying to send to the hardware serial port used for communications with your PC.
Try: Code: [Select]. Perry, Thanks a lot for checking the infos regarding serial ports! Ok, so here what happened today: I tried your code and it didn't work.
So, on the Nextion I only put a text block t0 with written "empty" in it. With the sketch, on launch it would write "test" in this block instead. I modify the Nextion file adding replacing the number box by a text box and using this code: Code: [Select].
Re: [solved] Send data to a Nextion display. I consider this thread as Solved. Thanks a lot to PerryBebbington for his help! I have other issues with this project but I created another thread as it doesn't concern the same topic.
Quote from: Dyspho on Mar 28,pm.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.
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.
Getting Started With Nextion and Arduino Uno
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. 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.Pages:  2.
Nextion screen problem with DUE. Hi everyone, I am changing from Mega to Due and I am having some problems with my nextion touch screens. Apparently the due does not like this line of code: Code: [Select]. Code: [Select]. Re: Nextion screen problem with DUE. Here's the link to the Nextion library. It uses software serial, so you'll need make some modifications to use hardware serial refer to the link.
Not sure if there would be other software compatibility issues. Your touchscreen is 5V so you'll need to level shift or voltage divide to 3.Owe yoruba lori ota
I think the Due's TX could be directly connected to the touchscreen. Check the touchscreen datasheet to see if 3. Hi thanks for the reply.Archangel m1a stock
The MCU on the back of the Nextion is a 3. Just noticed you should be using Serial2 for pins 18 and Quote from: dlloyd on Sep 26,pm. OK, I wouldn't use pins 0 and 1 with a touchscreen as that's used for programming. I ordered another DUE because I do not find anything that could not make it work I am still thinking about the touchscreen properties, check the attachment pse.
Image 2. Ok, so some eveolution here. So why the hell the nextion touch would not work??? I am still struggling with arduino due serial coms If anyone has any thoughts about this would great Hi, any solution? I have same problem - programing Nextion with hardware serial trough Mega works fine, but with Due after 4 sek connection is lost.
Guys, just trying to figure out this problem, I've got the messages from the Nextion to reach the arduino through Hardware serial 2 by doing the following: Check the file NexConfig.
Nextion LCD communicate with Arduino UNO
The devil is on the details. It turns out that I was missing the nexInit on the Setup.Monster hunter world err12 graphics device crashed
No need to add nexSerial. It is all made by the nexInit. Moreover, the Serial for debugging is initialized as bps. No need also for Serial. Now everything is working apart from the button instances. Even the dual state buttons are triggering the callbacks, but I am missing some detail for the button instances. If anyone can help, I have done the following: 1 Created the button instance: Code: [Select].
Download the HMI project file to your Nextion display with Foca and connect to your mega the same as chapter 1. Download the RTC library and store it in your arduino library folder.
Open arduino IDE to create a new project file, on which you can write clock display programs according to Nextion library and RTC library. The source code is below:. After download the code to your MEGA,we are going to put a 6.
As below:. In the code,you can see the connection of hardwares the connection of the four LED bricks are not changed :. Now,everything is done! In last two chapters we realize one-way send and receive data. In this chapter, we will learn how to implement Nextion and MUC two-way communication.
For example: achieve MCU clock settings from Nextion display. Create page l, on which create 3 button and 12 text components, then modify as below random naming :. Download the HMI project file to your Nextion display with Foca, then connect Nextion display to your mega the same as chapter 1. Modify the source code based on last two chapters, complete time-setting code writing.
You must pay attention to date line issue while writing code. The soure code is below:. After complete setting date and time, then jump to page 0, where you must send time information again to the screen, as follows:. Download the source code written in arduino software to maga, and you can see the effect demonstrated as below:.
Our smart fish tank V2.
Using a Nextion LCD to create an Arcade control panel
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Login Datas. I accept the Terms and Coditions. Register or login. First name is required!I am in the process of writing 3 instructables on how to use the Nextion displays with your Arduino Uno. In this first part I will show you how to connect your Nextion display to your Arduino Uno. We will also cover how to detect a button tap without the library and with debugging enabled. I am not using the library, because I've found the code to lack explanation and my Arduino sketches don't want to compile when adding the libraries.V speed quiz
Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. Here is a link to the Nextion instruction set. You can use these instructions to determine what else must be sent to the Arduino.
Connect the red and black wires to 5V and ground on the Arduino respectively. Connect the short leg of the LED to ground on the Arduino.
Connect the resistor and long leg of the LED in series. Connect pin 13 to the resistor. You should see your LED turn on and off when tapping the button. If you open the serial monitor and set it to baud you should also see some info being spit out as defined in the sketch. Reply 4 weeks ago. If memory serve that was because the TX and RX pins are unusable if you use the serial port to debug your program.
Question 3 months ago on Step 3. Hello, I am trying to use this to control 3 loads instead of one. This code will only work for one load for me no matter how I modify it. Can you please help? Reply 2 years ago. Reply 1 year ago.
Your instructions I followed were very clear, it worked perfectly. It was the first time I used the nextion display touch screen function. Thank you. This is one of the best tutorials I have found in the Adruino field. No long explanations about what new project the writer was doing.
The extra link allowed me to figure out how to hide or display a picture.Nextion makes inexpensive touchscreen LCD displays that come with Nextion Editor, a visual editing software which allows you to design your own interfaces all by yourself, even if you don't have any coding background knowledge.
The Nextion LCD touchscreens are great for Arduinos because most of their functionality and processes are self-contained in the screen. The benefit is that the Arduino does not use a lot of resources or pins dealing with a high resolution touchscreen, it simply sends serial commands to the screen or receives event notifications such as button presses. The best thing about this LCD is that we can program it via a visual editing software. And we can control it via Arduino or other MCU.Nextion Display Tutorial #3 UART Interfacing, Buttons, Text Box & Progress Bar
It's very easy to use this display which I will show in this tutorial. Nextion LCDs are available in various resolutions and sizes, here is an example. For our project we will make a simple loading progress graphic that shows how much of the program has loaded. First, create two pictures:. Configure it like it's shown on the picture pic2. Set it to 'Image' so we can set pictures in progress bar. We have bpic and ppicbpic is used for lighter picture and ppic is used for darker one.
Nextion LCD communicate with Arduino UNO
Val is for loading value try to set it to other numbers and you will see progress. Go to 'Upload, select com port and hit go. You will see something like this. When the value goes to max it will go back to 0 only for testing. Step 1. What is Nextion? Software First you'll need to download the Nextion software. For now it's only available for Windows, but on a Mac you can use Parallels Desktop. Install software. On left side you will see buttons 'Add' ,'Insert','Delete' This is for you pictures.
Click on 'Add' to insert all your photos for this project. Most important thing is the 'add component' button where you have all the components for your projects like buttonspicturestext, progress bar etc.
On the right side you have your pages and control notes which we will discuss later.
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