Another brilliant and informative video. You seem to have a knack for covering all the subjects that I am hoping to implement in future projects. I am eagerly awaiting video 2 Thank you Andreas
what about the cheaper touch modules in aliexpress and ebay? can we use same ide or it it without much support? ANy advantage since there is only one vendor and hence no competitve pricing
The Nextion IDE only works with Nextion screens. The cheaper touch screens do not come with an easy to program IDE. They take tons of work compared to Nextion but if you are up for it then go for it. Other screens do not have the onboard goodies that allow for such easy programming. The MCU (microcontroller) has to carry all of that load when using cheaper screens. Nextion takes most of the GUI (graphical user interface) load off of the MCU. I'm not paid to endorse Nextion. I'm just a satisfied user that has built several complex GUIs with very little effort thanks to having a few of these screens. The few Nextion screens that I have are worked pretty hard and the non-Nextion, cheaper, screens just sit in a box at the back of a cabinet. Buy one, try it, then decide. You will come back and thank me. VisionStills.org
Also here is the code I am attempting to use. It is named "CompSlider_v0_32.ino" #include /** * @example CompSlider.ino * * @par How to Use * This example shows that ,when the slider component on the Nextion screen is released, * the text value of text component will be changed every time. * * @author Wu Pengfei (email:) * @date 2015/8/11 * @updated 2016/12/25 bring HMI up to v0.32 to avoid too old issues * @convert by Patrick Martin, no other changes made * @copyright * Copyright (C) 2014-2015 ITEAD Intelligent Systems Co., Ltd.
* This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. */ #include "Nextion.h"NexText t0 = NexText(0, 2, "t0"); NexSlider h0 = NexSlider(0, 1, "h0");NexTouch *nex_listen_list[] = { &h0, NULL };void h0PopCallback(void *ptr) { uint32_t number = 0; char temp[10] = {0}; dbSerialPrintln("h0PopCallback"); h0.getValue(&number); utoa(number, temp, 10); t0.setText(temp); }void setup(void) { nexInit(); h0.attachPop(h0PopCallback); dbSerialPrintln("setup done"); }void loop(void) { nexLoop(nex_listen_list); }
Yes you are right. They contain an additional controller. But I still think, the price is ok, because I do not need many pins and they save me considerable time for developing nice user interfaces
Wow, there's a lot more to the Nextion than I had imagined. I have been using OLED displays with I2C and they work really well but this is a real step change. Clearly its going to be more complex with the touch element and your video really makes it evident what is involved. Thanks for doing this video it's really helpful. Arthur
No problem, I'm not sure how you manage to reply to so many comments, it must be difficult with 10,000 subscribers. How will you cope when it's >1,000,000. Perhaps we could write a programme for that:-)
I take it as it comes. But you are right. the comment functionality here and also on Facebook is not good. It is easy to oversee something. I for sure will not write a program, because I like these new possibility to communicate around the world with people with similar interest. When I was young, we used short wave. Now the internet. And fortunately, this has more bandwidth and more stable connections...
Hi Andreas, I have a problem with my Nextion display, It doesn't communicate with arduino anymore, I figured that when I'm testing Nextion's RX & TX with multimeter, thi buzzer gives a voice which means that they are connected together.. How can I solve that ? Please I really need your help!
I cannot do remote diagnostics. So, you have to investigate yourself. Maybe you start with a very simple example where you are sure, that it should work. P.S. The two cables are not necessarily connected together if your Multimeter buzzes. If one cable has 5 volt and the other zero volt, your Multimeter buzzes, and the two cables are not connected. Measuring independently the voltage levels to ground is a better possibility (without Arduino) to see, if the two cables are really connected. And please be aware, that RX is an input. So, Its voltage is not properly defined and might change, if you connect your second lead of the Multimeter to 5V or to ground.
OK, thanks first for your reply, to make you close to my problem, at first I used to work with nextion display without problems, everything was good.. I tried many of examples from the library I compiled the programs and transfered it to arduino mega, and I used to compile HMI files on nextion editor and transfered them to nextion display through SD Card. later I created my proper application, and it worked very well.. I read time from RTC and write it to display, as I used to read components on Nextion Ids to arduino to do several things, but now .. I can't read Ids on arduino as I can't write data to nextion even when I tried examples from the library.. so I'm sure the code works and i'm sure that there is no problem with HMI file. so the only thing I can think about is the hardware serial. I made measurements on nextion only without power supply and without arduino connections of course. I tired measurement on RX and ground I got some values which made me in doubt .. So I think that Serial RX & TX on Nextion is damaged (I'm not sure).. If that's right .. how can I do to solve this?
I know about UTFT library under arduino, but before purchasing any TFT from random website how I can be sure that this TFT is going to work with UTFT library, could you please help me with that. I am looking for 4.3 inch, 5 inch and 7 inch TFTs with resistive or capacitive touch.
Would love to play with one of these display but compared to i2c display they are so damn expensive that i just can't justify the expenditure to my wallet !! For comparision, normal i2c 3.5 inch display will cost $12 whereas these nexons start from $45 here in Australia..
The product seams great but the price have since gone bit crazy, it's now 90€ delivered in Europe, not 16 like you show here. That totally change the interest of the video, and especially makes the title fallacy.
I have downloaded the Arduino code from your link but when i click verify it flags up an error about NexText saying it does not match a type... I have tried NextionText too and that says no matching function. Am i missing something here?
Great tutorial and thank you! I have the 4.3 version and I"m getting "File version to low" on the SD card. Do you know what this means? Thanks in advance.
I look forward to your future videos on this. I am currently trying to work on a project with the Nextion 2.4 inch and am having some problems with the Arduino coding part. I am wanting it to control relays for a project.
I made a video on using the Nextion with the Arduino and not using the Nextion.h library. I don't want to promote it on your video so feel free to delete this comment but if you have a chance please check it out. It should be easy to find. I would appreciate your feedback. Thanks, I really enjoy your videos.
Andreas, since we have been talking about Nextion and how the library is kind of old. I was wondering if you had seen this one which allows the use of SoftwareSerial to talk to the Nextion: openhardware.gridshield.net/home/nextion-lcd-getting-started-for-arduino
It seems nextion have changed their web pages and the links to the editor no longer work, I have found you have yo download the LTS version for the smaller displays. No idea where the demo.hmi file exists though any help there would be good.
Hi Andreas. Interesting video and a crazy coincidence. I and an industrial designer with basic electronics knowledge. Today I was looking at my collection of beaglebone and arduino boards and wondering if I had a display I could use for one. I rummaged thru my collection and found a 7inch touchscreen with a controller attached. Humm, Only Rx1, Tx1, Vcc, Gnd and usb-P & N. So I look on the net to see what I would need to use it and could find very little. Anyway, now I see your vid and think maybe I am a little smarter. Still don't know what I need, but am closer. Thanks so much. Cheers, KJM
hi andreas please take a look on the great ESP8266 board that will make the work greet with the Nextion display thats done by Pete here is the link from his blog tech.scargill.net/nextion-wifi-touch-display/
+mohammed Al sayed I think, that is a good board. And it is designed for the purpose of measuring temperature. If I need to solve a problem I do the same: I usually create my own board just for the purpose. Sometimes, I order it from Osh Park, sometimes I just route one with my CNC
Thanks for this video, I'll now watch the others. I was just beginning to program a slow moving TFT for a vehicle dashboard (fuel, temp, oil pressure, voltage) using a PIC18F and SPI tft and it was becoming very large and complicated. Someone suggested Nextion and you got me started. I'll get a much nicer looking panel now I think.
Thank you so much for your valuable cooperation i got many things clear from these demo, especially "Fish Tank" now, i can made that controller dependent on DHT22 once again thanks
Can we replace the flash chip? the in built is 4MB , I had a 16MB chip same brand and spec . I think the display controller data is saved there , so if we can copy the raw Hex data and copy the same to the new chip, it should work. what say. ----------- for got to mention, I am a great fan of your work.------------- Thanks and appreciated . greetings from India.
god this feels dirty. I got an ili9341 working by using 2 libraries but I couldnt get it going with any of the libraries that have the wheel already defined (aka buttons, inc and dec for vars...etc) so i broke down and one of these came in the mail today...i supose its slightly less dirty than running something like a pi but this whole platform just makes me feel dirty for reasons i cant fully explain. some of it might have to do with knowing i could write a button library but not having the time. seems to me array to handle pages, array to handle touchable ovjects and match them back to an action and a bunch of loops..only efficent way i can see to map a returned tuch point to a button object. if someone has a better way please share..not totally complex.but damn it adds up time wise
has anyone had the same error as me with the editor when opening the nextion demo .hmi file ? i got this error :System.ArgumentOutOfRangeException , any info would be appreciated
Hello sir , Thanks for connecting here. I am working as a freelancing project. For that i am working on Nextion display to control external light through nextion GUI. Here i am mentioning my problem quries regarding my project. Note- 1. I am using Nextion enhanced series, Arduino Uno board. 2. Connection schematic i am attaching here. 1. How to turn On/Off external light through timer countdown function. i.e i wanted to turn ON light for 1 hour & after 1 hour light should be OFF, so for that how can i design my GUI button and code for system. The timer coutdown should be HH-MM-SS. I did one demo to turn on/off led through timer countdown but i am getting some issues regarding timer. Means i am not able to set hours-minutes-secound format in GUI. For that i am attaching my GUI Picture. Could you guide me to make proper timer countodown function to turn on/off light? Can you please make one video on timer countdown function to turn on/off light (external)? 2. How to interface PIR motion sensor with nextion display?
Actually I want to scheduling in between the lights like if we are giving the timing like from 01:00:00 to 02:00:00. Its means in between this timing light should be turn ON and after that or before that should be OFF. The one which you sent there we are giving only time for how much time we want. But i want like for Monday to friday timing should be 9am to 3pm or on saturday sunday has to be off for all lights. We are using Arduino UNO to control all these things. I am new to this thing so I don't know how to start. Please help. And also i wanted to SET , CLEAR , Timing schedule format, How can i design this process?
You have to program all your wishes on your Arduino. Maybe you watch also the other Nextion videos on this channels because with the UNO and the Nextion you have to know some tricks.
Hi Andreas, The Nextion series was great. How about another series featuring something like STM32F769NI MCU with its display? That would involve the new stm32cubeide and stmcubemx. Could be cheaper than Nextion.
Thanks so much ... AWESOME. Did you think about integrating this with your #185 ESP8266 - Google Calendar Reminder: How To Make Your Wife/Girlfriend happy (Arduino) project, updating the buttons to this LCD screen?
In those videos, I was experimenting with simple interfaces. But sure, you can add such an interactive LCD screen to such a device. It would probably look nicer ;-)
I'm having absolute nightmares with the Arduino code for this. The info scattered about Google on this is a joke. I can't get the relevant library so I can use the simple commands that others seem to be using such as my Nextion.sendcommand() - all links to github point to text files which don't compile, no matter what library I install. I've wasted many hours and all I get is "dosen't name a type" and "my Nextion was not declared" Close to throwing the thing out of the window.
Hi Andreas. Yes, I believe so. It seems like the more simplified code which I seek is beyond my reach, so I will have to learn it the hard way from the official, non-intuitive lengthy code. Your tutorials are very valuable in this regard, thanks. If it wasn't for your videos I wouldn't have bothered at all with this display.
+ArcanePath360 You will see, if you take the time, it is not complicated. There are just a few steps and they are always the same. But I had the same feelings as you have now
hi andres I'm looking to use nextion touch screen with arduino to show 12volt current in my solar system and batteries .so I need 2560 mega .I have uno now but that no good.anything else I need ?steve .nice videos
Is there any new thing? Or is Nextion still the best option for home automation? Now a days they are much more expensive than similar displays from other brands (without all nextion features)
@@AndreasSpiess Thanks for the response. I have since found that you can use the long term support (LTS) version of the Editor to open the examples and it will convert the HMI files to a later format on save. This updated copy can then be opened with the latest (as of now 1.61.2) Editor. It just means you have to have both editors installed, and you might have to update file permissions depending on your Editor installation details. I hope that's useful.
Please let me know can I increase 4MB flash memory of Nextion 3.2" to 16MB or higher? Nextion 3.2" has Winbond 25Q32 it is 4MB flash if changed it from big size like Winbond 25Q256 it has 32MB Flash memory?
You can find it here on Aliexpress: www.aliexpress.com/item/3-5-Nextion-HMI-Intelligent-Smart-USART-UART-Serial-Touch-TFT-LCD-Module-Display-Panel-For/32491366429.html
+Andreas Spiess i just came across something on aliexpress which i wanted tot share with you. It's a quad band GSM gprs module for around 4 euro's. Smart Electronics GPRS module GSM module A6 \ SMS \ Speech \ board \ wireless data transmission adapter plate s.aliexpress.com/bENb6Vfu (from AliExpress Android) ai-thinker.blogspot.be/2016/03/ai-thihker-a6-gprs-gsm-module.html?m=1
Hi Andreas... Do you have a video where you show how I can to use arduino to upload the Nextion editor file to the HMI display? or the code for the arduino in order to use it as a USB serial writer... Thanks
Allo Andreas , Thank You so much for all your awesome , informative and entertaining video . Can this display show a camera feed ? say for a rearview camera , not a back up type camera , i mean a mirror view , like what we see when we look at our side or rearview mirror in our cars ? Cheers & be well .
Hi Andreas, many thanks for the tutorial and all of the information - I had not heard of this display and can see it will make a simple job of providing a pretty UI for my projects. I have just received my display and wonder where the original HMI and TFT file is that came programmed on the display? I can see that you edited it to change the buttons on the gauges, but I can not find it. Could you point me in the right direction please? Thanks again, Ian.
Thanks your nice words. There is a second video with more details about programming the Nextion an there is the link to my files: github.com/SensorsIot/Nextion-Tutorial
Sir, First of all thanks for sharing such a valuable guideline regarding this good touch screen I was searching this kind of LCD from many many months I want to use this LCD with one of my Temperature and Humidity controller with DHT22 sensor. Could you please guide me, how to communicate all these things with this LCD. thanks in advance
So the card reader on the Nextion display is used only to transfer the .TFT file? Seems like a bit of a waste; it would be nice if it could also work as a card reader (accessible by the microcontroller). I wonder why they used a card reader instead of a USB port.
+RFC3514 The serial connection to the microcontroller is only 9600. This is not enough for SD content transmission. There is a possibility to transfer the content via Serial to the device. I did not use this feature in this episode, because the way with the SD card was ok for me. Maybe I will use it in the next episode about Nextion.
Andreas Spiess Well, it would be slow, but it could still be useful to have access to the card. Is there at least some way to have multiple .TFT files on the card, and use a command from the microcontroller to select which file should be loaded? It seems some potential is wasted, if the only purpose of the card slot is to load a single file.
great video . what a great demo and explanation . I had seen these before but never working with explanation . I assumed them just to be slow serial screen with slow SD card support and a bit of page memory . Looks like just the sort of think that would solve a few of my projects .
+XerotoLabs When I saw it first, I also did not understand the concept fully. I think, at the beginning, they also had many problems with their software. Now, It seams at least usable. The editor still has version 0.34!
Hey my friend, thank for your vídeo! I have a problem with Nextion and Arduino, ¿Can you help me? I need ejecute one "while" cicle, I put it on sub-rutine that one button: void b12PopCallback(void *ptr) { var = 1; while (var == 1) { digitalWrite(s1,LOW); digitalWrite(l1,LOW); digitalWrite(s2,LOW); digitalWrite(l2,LOW); delay(500); digitalWrite(s1,HIGH); digitalWrite(l1,HIGH); delay(7000); digitalWrite(s1,LOW); digitalWrite(l1,LOW); delay(500); digitalWrite(s2,HIGH); digitalWrite(l2,HIGH); delay(7000); digitalWrite(s2,LOW); digitalWrite(l2,LOW); } } But I need with other button in the nextion pant get out of the cicle... And I can't, because I don't know how listen a button in the nextion, inside sub-rutine of other button. Please HELP ME!
You have to rewrite the whole program. It must not contain delay(). Use instead: if (millis()-entry>7000) {do what you want; entry=millis();} I think you have to put your logic in the main loop. Maybe you google "State machine Arduino". Here a hit: ruclips.net/video/jrFQlspRgWw/видео.html
You have all reason, I now change to delay and move the While cicle in the loop, but I cant exit of this "While" with a nextion button. I don't know about the "State Machine arduino" now I will see your video to understand one few more.
Hi there! you are an Idol for me, really enjoy your videos!! I wanted to ask for an interesting request: Do you know if it is posible to program this display with ESP8266 attached to them using OTA or the IOTappStore ?? I made some projects with this display, so I am in the need for this feacture so I can make complete updates of the projects! Thanks anyway!
I think it's going to be complicated to compile the nextion display by sending the .tft file from ESP8266, could be a good idea for a future video! Thanks for the reply!
Very Nice! I'm looking forward to the next video on these displays. Can you show some update/performance for these? And, power consumption? These might replace a much more expensive and power hungry display for my next project.
+Corgitronics The second video has to wait a few weeks since I have other projects in the works. But I will try to include your points. The 3.5" display in the video with the slider sketch takes 160mA.
Your tutorials have gotten me up to speed on the Nextion display pretty quickly. I started on the Uno and followed your directions to modify NexConfig.h for no dbSerial port. Worked great, but I still wanted to see debug statements. So, I bought an Arduino Mega on Amazon and restored NexConfig.h to the original file. #define DEBUG_SERIAL_ENABLE #define dbSerial Serial #define nexSerial Serial2 The example sketches work fine except that I see nothing in the serial monitor. I also ran some tutorial sketches by InternetlinkKnight that sends data to the Nextion display without using the library, and both serial ports on my Mega work just fine. I set the serial monitor to 9600, but I couldn't find anywhere in the library files where the serial port is initialized. Any ideas why the library doesn't work with dbSerial.Println() for debugging statements? Thanks, steve
Thanks Andreas I got to know about Nextion through this video around 15 months ago and in June 2018 we became Distributor for Nextion Displays in India all thanks to you :)
Hello I would like your help, how can I use this slider to control the intentions or PWM of a led? I am new at this! I do all the procedure that is shown in the video but I do not know how to integrate the code that you provide to be able to control the intention of a led through the screen. Would you be so kind as to give me your help?
1. Watch my videos #59 and #63 2. Start with one of my examples and stay with them till they work 3. Look at the examples provided with the Nextion library. If you want to use a slider, use the slider example. Make it work and understand, how it works. 4. Try to control your LED with a PWM signal without Nextion (if not already done) 4. merge the two sketches.
I will show the arduino sketch so that they better understand my question. I need to replace the variable (button) created by me in the arduino sketch, by the slider created in the nextion screen. When I move the slider or button on the screen the value of the variable (light) varies from 0 to 255 as the arduino PWM value. In the examples # 59 # 56 Nextion Display Tutorial you create a (Slider) When you move the value changes, I want to do that with arduino PWM output. Example # 56 works for me, it loads everything fine, but example # 59 does not give me an answer, I press the buttons and it does not change any value. I am using (Arduino UNO), the library (ITEADLIB_Arduino_Nextion-master) as previously said example # 56 I everything works fine but the arduino # 59 does not respond to commands on the screen. I'm going to extract the arduino code so they can better understand my question. I need to replace the variable (button) created by me in the arduino sketch, by the slider created in the nextion screen. When I move the slider or button on the screen the value of the variable (light) varies from 0 to 255 as the arduino PWM value. In the examples # 59 # 56 Nextion Display Tutorial you create a (Slider) When you move the value changes, I want to do that with arduino PWM output. Example # 56 works for me, it loads everything fine, but example # 59 does not give me an answer, I press the buttons and it does not change any value. I am using (Arduino UNO), the library (ITEADLIB_Arduino_Nextion-master) as previously said example # 56 I everything works fine but the arduino # 59 does not respond to commands on the screen. Arduino sketch Https://drive.google.com/drive/folders/0Bw_1q_JGws0Ycm1xamVTZmJwd1U?usp=sharing Int pin = 3; Int button = A0; // Replace the button with the Slider Int light; Void setup () { PinMode (pin, OUTPUT); } Void loop () { Light = analogRead (button) / 4; AnalogWrite (pin, light); }
Please look at the code which works and try to understand it first. This is not easy stuff and it might take you quite some time to do that. First, you have to understand, how the values are transferred from the Nextion to the Arduino. In the slider example, you find the value of the slider here h0.getValue(&number); void h0PopCallback(void *ptr) { uint32_t number = 0; char temp[10] = {0}; dbSerialPrintln("h0PopCallback"); h0.getValue(&number); }
As usual.. very useful review - in Swiss accent :). that would be nice display for quick games for my kid. Any idea about current consumption ? can you may be try measuring current / power consumption with slow , fast rendering animations/texts. i am curious to know how long it might work on batteries. thanks again...
+Electromania The 3.5" display in the video with the slider sketch takes 160mA. Be aware, that these LCD screens are not as responsive as the one on an Iphone. You have to press more to get a reaction.
I usually work with Touch Screens where their shields occupy most of my MEGA's ports and always do all the coding. This can come pretty handy when designing the UI and I can program the rest. Cool stuff, thanks for the video!
hi andreas, I bought a screen nextion NX4832T035 in aliexpress link, I saw your videos on how to configure it and I wonder if you can share the image library you see in the videos, thank you very much for your great contribution.
hello, if it is a bit difficult for me to find things on google, I do not speak very good English, I use google translator to write here, also in the search in Spanish (Chile) all that comes out are direct pages nextion, if so kind as to send a link I would greatly appreciate it, thanks again for your contribution.
Hi, first of all, thank you for the great video: I'll be trying those displays ASAP. I see you're concerned about the dimension of the buttons, but, checking the producer's page (nextion.tech/basic-series-introduction/) we can read that "All Basic Series products are resistive touch panel type". Contrarily to the rigid and inaccurate capacitive touch screens a certain dumb person wanted to be used in modern smartphones, resistive ones are pixel accurate, if used with the tip of the fingernail (or the stylus). Anyone who's ever happened to use a PDA (en.wikipedia.org/wiki/Personal_digital_assistant), a Nintendo DS (en.wikipedia.org/wiki/Nintendo_DS), or a ~15 years old Windows Mobile (en.wikipedia.org/wiki/Windows_Mobile) smartphone (not to be confused with Windows Phone ones) knows that there used to be icons smaller than a button on a modern days phone on screen keyboard, and that it was extremely easy to use them. So, don't worry if the buttons seems to be too small: the example you downloaded was created by the same guys who developed and sell the product, so we can easily assume they wanted that example to illustrate real possibilities and use scenario of their product. Check the first image on Windows Mobile page, for example: those icons representing signal strength, battery charge, and volume, are all individually clickable... I was puzzled and frustrated when I switched to Android, and I still can't understand how people can have been so dumb and blind to switch from an accurate input device to the dumb one we're forced to use today.
Since Steve Jobs invented the Iphone things changed a bit and the "gold standard" seems to be the finger. Maybe it will change. The Ipad and some smartphones come with a stylus...
@@AndreasSpiess Well, they did introduce back the stylus, mainly because they could, since Jobs is now long dead: he was the guy who didn't want it. Jobs didn't even know how a (resistive) touchscreen used to work, he had simply heard about it and thought a stylus was MANDATORY for using it (like I said, I rarely used a stylus on a WM smartphone/PDA, or a TomTom®). You can find more info on fossbytes.com/the-iphone-would-never-have-existed-had-steve-jobs-never-hated-a-guy-at-microsoft/ where we can read "the creation of the iPhone stemmed due to hatred, and not due to the technological hindsight of Steve Jobs" Funny thing is, nowadays I do have to use a stylus for doing things that I was able to do without it many years ago, and that stylus is both quite expensive and delicate, so I don't wanna loose or drop it.
well, look at that. been watching a few of your vids this week and I was googling for info on these HMIs and here we are again. subscribed! "HMI" devices pretty much exactly like these have been around for a VERY long time for industrial applications. it is nice that they are finally cheap and small enough to build into portable projects!
This seems very cool. Do these displays have a controllable backlighting option? If not, do you happen to know of any displays that do that for the Arduino?
Find a tutorial about "level shifting" between 5volt and 3.3volt. There are many possibilities. Do not connect it directly to the Due inputs because it might destroy your due board.
A clever HID that I wouldn't have known about without your video. It is, effectively, a programmable terminal for an Arduino server. Thank you! I bought one through your link. We'll see if a soft keyboard is possible. This can put hundreds of control mechanisms in the space where only a few mechanical switches and indicator LEDs would normally fit! Wow! Here is a link to one of the wiki pages with electrical specs: www.itead.cc/wiki/NX4024K032 - I don't know if these are the same devices, but device clones tend to be very similar, electrically. Thanks again!
Thanks Andreas. I fixed my problem, I was having a "PICNIC"! Problem In Chair Not In Computer. I'm curious though, how did you get the word "HOT!" to show up at 10:57. Mine doesn't do that, the numbers just increase. thanks.
I have a suggestion for a video or at least a code project, and it is a little self serving.. :-) I am trying to use the Nextion with the ESP32, I want to read temp from a sensor in one core and use the other core to update/control the Nextion. I am having trouble trying to split up the code between the cores and files as I am unsure what the Nextion needs in file VS what goes in to the main loops for it. Any help you can provide would be great, and to be honest you are my reason for attempting this. :-) Thanks, John
Grüezi Andreas - another great video with very valuable information, as i'm also considering using the nextion displays in the future - great content and a nice swiss accent :) makes it really funny to watch.
Nextions only need a serial connection with 9600 baud which most of the modern MCU, also the TM4C1233H6PM, have. But you need also code to drive the display. And there, I do not know because I do not work with TI processors.
![Beginners SimHub Nextion Dashboard Setup Guide! [STEP-BY-STEP] [SIM RACING HARDWARE]](/img/1.gif)
But I like your accent
Nice video btw :D
Thanks!
I came up with two new projects before I had even finished watching your tutorial :)
+NOTuNOTme Good to hear. Possibilities and ideas are the base of our hobby.
I love it when Arnold Schwarzenegger teaches me about electronics. It feels like, I'm in the terminator.
:-)
Another brilliant and informative video. You seem to have a knack for covering all the subjects that I am hoping to implement in future projects.
I am eagerly awaiting video 2
Thank you Andreas
+Dean Greenhough The second video has to wait a few weeks since I have other projects in the works.
Excellent! Solves a lot of questions because of the lack of Nextion documentation.
Subscribed.
Thanks!
what about the cheaper touch modules in aliexpress and ebay? can we use same ide or it it without much support? ANy advantage since there is only one vendor and hence no competitve pricing
The Nextion IDE only works with Nextion screens.
The cheaper touch screens do not come with an easy to program IDE. They take tons of work compared to Nextion but if you are up for it then go for it.
Other screens do not have the onboard goodies that allow for such easy programming. The MCU (microcontroller) has to carry all of that load when using cheaper screens. Nextion takes most of the GUI (graphical user interface) load off of the MCU.
I'm not paid to endorse Nextion. I'm just a satisfied user that has built several complex GUIs with very little effort thanks to having a few of these screens. The few Nextion screens that I have are worked pretty hard and the non-Nextion, cheaper, screens just sit in a box at the back of a cabinet.
Buy one, try it, then decide. You will come back and thank me.
VisionStills.org
Also here is the code I am attempting to use. It is named "CompSlider_v0_32.ino" #include /**
* @example CompSlider.ino
*
* @par How to Use
* This example shows that ,when the slider component on the Nextion screen is released,
* the text value of text component will be changed every time.
*
* @author Wu Pengfei (email:)
* @date 2015/8/11
* @updated 2016/12/25 bring HMI up to v0.32 to avoid too old issues
* @convert by Patrick Martin, no other changes made
* @copyright
* Copyright (C) 2014-2015 ITEAD Intelligent Systems Co., Ltd.
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include "Nextion.h"NexText t0 = NexText(0, 2, "t0");
NexSlider h0 = NexSlider(0, 1, "h0");NexTouch *nex_listen_list[] =
{
&h0,
NULL
};void h0PopCallback(void *ptr)
{
uint32_t number = 0;
char temp[10] = {0};
dbSerialPrintln("h0PopCallback"); h0.getValue(&number);
utoa(number, temp, 10);
t0.setText(temp);
}void setup(void)
{
nexInit();
h0.attachPop(h0PopCallback);
dbSerialPrintln("setup done");
}void loop(void)
{
nexLoop(nex_listen_list);
}
Sorry please disregard this post. i placed it in wrong location, again sorry
oh my god... I hope your thumbs are fine...
inexpensive?? The Nextion displays are more expensive than almost every other touch screen on the arduino market.
Yes you are right. They contain an additional controller. But I still think, the price is ok, because I do not need many pins and they save me considerable time for developing nice user interfaces
Excellent & informative, thank you.
+Johan van den berg You are welcome!
Wow, there's a lot more to the Nextion than I had imagined. I have been using OLED displays with I2C and they work really well but this is a real step change. Clearly its going to be more complex with the touch element and your video really makes it evident what is involved.
Thanks for doing this video it's really helpful.
Arthur
Just discovered this comment...
I am glad if my videos help.
No problem, I'm not sure how you manage to reply to so many comments, it must be difficult with 10,000 subscribers. How will you cope when it's >1,000,000. Perhaps we could write a programme for that:-)
I take it as it comes. But you are right. the comment functionality here and also on Facebook is not good. It is easy to oversee something.
I for sure will not write a program, because I like these new possibility to communicate around the world with people with similar interest. When I was young, we used short wave. Now the internet. And fortunately, this has more bandwidth and more stable connections...
I am moving on from lcd display to a touch screen. Good job on the video. Keep the videos rolling rock on.
Thanks. I will do so...
which NEXTION model is recommended for home automation??
I have no recommendation. You have to decide on the size and on the money you can spend.
Thank you, it's quicker to watch your tutorial rather than wasting time researching for the information.
Thanks!
Swiss accent? I somehow hear Mr A. Schwarzenegger... ;-)
I like the video. Now I will consider that display for my next project! Thanks!
You are welcome. And thank you for comparing me with Arnold!
Anytime... next step: move to California and get that governor job ;)
:-)
Could you show us how to build a hdmi monitor with that sreen
That would make no sense.
Hi Andreas, I have a problem with my Nextion display, It doesn't communicate with arduino anymore, I figured that when I'm testing Nextion's RX & TX with multimeter, thi buzzer gives a voice which means that they are connected together.. How can I solve that ?
Please I really need your help!
I cannot do remote diagnostics. So, you have to investigate yourself. Maybe you start with a very simple example where you are sure, that it should work.
P.S. The two cables are not necessarily connected together if your Multimeter buzzes. If one cable has 5 volt and the other zero volt, your Multimeter buzzes, and the two cables are not connected. Measuring independently the voltage levels to ground is a better possibility (without Arduino) to see, if the two cables are really connected. And please be aware, that RX is an input. So, Its voltage is not properly defined and might change, if you connect your second lead of the Multimeter to 5V or to ground.
OK, thanks first for your reply,
to make you close to my problem, at first I used to work with nextion display without problems, everything was good.. I tried many of examples from the library I compiled the programs and transfered it to arduino mega, and I used to compile HMI files on nextion editor and transfered them to nextion display through SD Card. later I created my proper application, and it worked very well.. I read time from RTC and write it to display, as I used to read components on Nextion Ids to arduino to do several things, but now .. I can't read Ids on arduino as I can't write data to nextion even when I tried examples from the library.. so I'm sure the code works and i'm sure that there is no problem with HMI file. so the only thing I can think about is the hardware serial.
I made measurements on nextion only without power supply and without arduino connections of course.
I tired measurement on RX and ground I got some values which made me in doubt .. So I think that Serial RX & TX on Nextion is damaged (I'm not sure).. If that's right .. how can I do to solve this?
I know about UTFT library under arduino, but before purchasing any TFT from random website how I can be sure that this TFT is going to work with UTFT library, could you please help me with that.
I am looking for 4.3 inch, 5 inch and 7 inch TFTs with resistive or capacitive touch.
This display is something completely different. It has a processor on board.
Boa noite.
Ajude me por favor.
Preciso de toich para o módulo eDIP240-7
HELP ME.
I share my knowledge in my videos and unfortunately, have no time for consulting :-(
Would love to play with one of these display but compared to i2c display they are so damn expensive that i just can't justify the expenditure to my wallet !! For comparision, normal i2c 3.5 inch display will cost $12 whereas these nexons start from $45 here in Australia..
You are right. If you do not need Nextion functionality you better go with the cheaper solution
The product seams great but the price have since gone bit crazy, it's now 90€ delivered in Europe, not 16 like you show here. That totally change the interest of the video, and especially makes the title fallacy.
You are right. Things changed considerably...
I have downloaded the Arduino code from your link but when i click verify it flags up an error about NexText saying it does not match a type...
I have tried NextionText too and that says no matching function.
Am i missing something here?
This is an old video. It is well possible that something changed since then. Maybe you find newer examples.
Can we use the ipad1 or ipad2 display for this? I have some old ipads that I want to re-purpose. 😄
These displays have a built-in program. I do not know how you could do that with an iPad display.
Great tutorial and thank you! I have the 4.3 version and I"m getting "File version to low" on the SD card. Do you know what this means? Thanks in advance.
Maybe you have to use a newer Nextion editor? But I do not know.
I look forward to your future videos on this. I am currently trying to work on a project with the Nextion 2.4 inch and am having some problems with the Arduino coding part. I am wanting it to control relays for a project.
+Kyle Leland Next video about Nextion is timed for Thursday
I made a video on using the Nextion with the Arduino and not using the Nextion.h library. I don't want to promote it on your video so feel free to delete this comment but if you have a chance please check it out. It should be easy to find. I would appreciate your feedback. Thanks, I really enjoy your videos.
I checked your channel. Good quality. Subscribed!
@@AndreasSpiess Thanks.
you call this screen inexpensive? you should see it's price in my country, my salary is 4.000 and this screen is 1.000, so yeah it's inexpensive
Maybe I also would call salaries in your country low :-( But you are right, for you they are very expensive.
Andreas, since we have been talking about Nextion and how the library is kind of old. I was wondering if you had seen this one which allows the use of SoftwareSerial to talk to the Nextion:
openhardware.gridshield.net/home/nextion-lcd-getting-started-for-arduino
Thank you for the link!
It seems nextion have changed their web pages and the links to the editor no longer work, I have found you have yo download the LTS version for the smaller displays. No idea where the demo.hmi file exists though any help there would be good.
This is an old video and I cannot update it.
Hi Andreas. Interesting video and a crazy coincidence. I and an industrial designer with basic electronics knowledge. Today I was looking at my collection of beaglebone and arduino boards and wondering if I had a display I could use for one. I rummaged thru my collection and found a 7inch touchscreen with a controller attached. Humm, Only Rx1, Tx1, Vcc, Gnd and usb-P & N. So I look on the net to see what I would need to use it and could find very little. Anyway, now I see your vid and think maybe I am a little smarter. Still don't know what I need, but am closer. Thanks so much. Cheers, KJM
You are welcome!
hi andreas
please take a look on the great ESP8266 board that will make the work greet with the Nextion display
thats done by Pete here is the link from his blog
tech.scargill.net/nextion-wifi-touch-display/
+mohammed Al sayed I think, that is a good board. And it is designed for the purpose of measuring temperature. If I need to solve a problem I do the same: I usually create my own board just for the purpose. Sometimes, I order it from Osh Park, sometimes I just route one with my CNC
Thanks for this video, I'll now watch the others. I was just beginning to program a slow moving TFT for a vehicle dashboard (fuel, temp, oil pressure, voltage) using a PIC18F and SPI tft and it was becoming very large and complicated. Someone suggested Nextion and you got me started. I'll get a much nicer looking panel now I think.
Good luck then. The code should become much simpler with a nextion.
where to find this demo project
github.com/SensorsIot/Nextion-Tutorial
Thank you so much for your valuable cooperation
i got many things clear from these demo, especially "Fish Tank"
now, i can made that controller dependent on DHT22
once again thanks
Can we replace the flash chip? the in built is 4MB , I had a 16MB chip same brand and spec . I think the display controller data is saved there , so if we can copy the raw Hex data and copy the same to the new chip, it should work. what say.
----------- for got to mention, I am a great fan of your work.------------- Thanks and appreciated .
greetings from India.
I do not know.
Wow I want one. Is that gui for editing the views available on a Mac as well?
I dont think so
Hi,
Do you still recommend this or have you found something better?
I did not find something better. But I did not search hard ;-)
god this feels dirty. I got an ili9341 working by using 2 libraries but I couldnt get it going with any of the libraries that have the wheel already defined (aka buttons, inc and dec for vars...etc) so i broke down and one of these came in the mail today...i supose its slightly less dirty than running something like a pi but this whole platform just makes me feel dirty for reasons i cant fully explain. some of it might have to do with knowing i could write a button library but not having the time. seems to me array to handle pages, array to handle touchable ovjects and match them back to an action and a bunch of loops..only efficent way i can see to map a returned tuch point to a button object. if someone has a better way please share..not totally complex.but damn it adds up time wise
has anyone had the same error as me with the editor when opening the nextion demo .hmi file ? i got this error :System.ArgumentOutOfRangeException , any info would be appreciated
Thanks formaking my project easy
Happy to help
Can these be programmed directly from Arduino, programmatically etc ? No sd card, no desktop app ?
I tried once to "upload" a file to the device. But it was very slow. So I returned to the "normal way". Maybe something changed in the meantime
@@AndreasSpiess Yeah I was thinking it would be since slow serial data is the point of these. It might have a small buffer on the stm32.
this is really nice. no blah, just the facts. you're not from Bern, aren't you?
Thanks! Actually, I live near Basel
Hello sir ,
Thanks for connecting here.
I am working as a freelancing project. For that i am working on Nextion display to control external light through nextion GUI.
Here i am mentioning my problem quries regarding my project.
Note- 1. I am using Nextion enhanced series, Arduino Uno board.
2. Connection schematic i am attaching here.
1. How to turn On/Off external light through timer countdown function. i.e i wanted to turn ON light for 1 hour & after 1 hour light should be OFF, so for that how can i design my GUI button and code for system. The timer coutdown should be HH-MM-SS.
I did one demo to turn on/off led through timer countdown but i am getting some issues regarding timer. Means i am not able to set hours-minutes-secound format in GUI. For that i am attaching my GUI Picture.
Could you guide me to make proper timer countodown function to turn on/off light?
Can you please make one video on timer countdown function to turn on/off light (external)?
2. How to interface PIR motion sensor with nextion display?
Unfortunately, I have not time for consulting. I think, most of your problems have to be solved by a microcontroller, not the Nextion display
@@AndreasSpiess can you please tell me how to save data in Nextion eeprom
be aware that the shown demo is for the 3.2 inch model. Other models come with different demo's.
You are right. This applies also to the files made by you. You always have to first chose the size.
Actually I want to scheduling in between the lights like if we are giving the timing like from 01:00:00 to 02:00:00. Its means in between this timing light should be turn ON
and after that or before that should be OFF. The one which you sent there we are giving only time for how much time we want. But i want like for Monday to friday
timing should be 9am to 3pm or on saturday sunday has to be off for all lights. We are using Arduino UNO to control all these things. I am new to this thing so I don't know how to start. Please help.
And also i wanted to SET , CLEAR , Timing schedule format, How can i design this process?
You have to program all your wishes on your Arduino. Maybe you watch also the other Nextion videos on this channels because with the UNO and the Nextion you have to know some tricks.
@@AndreasSpiess I am new to this thing so I don't know how to start, thats why i am asking you here. Can i share my HMI file and GUI design?
The prices are now almost doubled.
Some of the prices back then were ridiculously low, I think. These good times seem to be over.
Hi Andreas, The Nextion series was great. How about another series featuring something like STM32F769NI MCU with its display? That would involve the new stm32cubeide and stmcubemx. Could be cheaper than Nextion.
On this channel I will stick to the Arduino IDE. So somebody else has to do this series.
I could not locate the file you have on the display when you start the video, is it available?
Maybe on the page of itead, but I am not sure.
Thanks so much ... AWESOME. Did you think about integrating this with your #185 ESP8266 - Google Calendar Reminder: How To Make Your Wife/Girlfriend happy (Arduino) project, updating the buttons to this LCD screen?
In those videos, I was experimenting with simple interfaces. But sure, you can add such an interactive LCD screen to such a device. It would probably look nicer ;-)
i dont even understand what's happening, you're just clicking stuff randomly.
Then the video was probably not made for you :-(
@@AndreasSpiess I was a little frustrated yesterday, the video became clearer after I watched a movie. Thanks.
I'm having absolute nightmares with the Arduino code for this. The info scattered about Google on this is a joke. I can't get the relevant library so I can use the simple commands that others seem to be using such as my Nextion.sendcommand() - all links to github point to text files which don't compile, no matter what library I install. I've wasted many hours and all I get is "dosen't name a type" and "my Nextion was not declared"
Close to throwing the thing out of the window.
ArcanePath360 Maybe you use the examples and explanation from my video #59. Some viewers were successful with it.
Hi Andreas.
Yes, I believe so. It seems like the more simplified code which I seek is beyond my reach, so I will have to learn it the hard way from the official, non-intuitive lengthy code. Your tutorials are very valuable in this regard, thanks. If it wasn't for your videos I wouldn't have bothered at all with this display.
+ArcanePath360 You will see, if you take the time, it is not complicated. There are just a few steps and they are always the same. But I had the same feelings as you have now
Is there an android app that can do something similar over wifi?
I do not know :-(
Very interesting, it will have to implement communication protocols, for example a modbus? Being the HMI máster?
+Clóvis Wollinger I do not understand your question. Can you explain a little more?
Hi Sir I want to save button value from nextion display to arduino variable can you please tell me is it possible.
You have to google. I do not know
Hi will you consider to look at the DWIN display?kindly send me an email or message referring to my banner contact info.
hi andres I'm looking to use nextion touch screen with arduino to show 12volt current in my solar system and batteries .so I need 2560 mega .I have uno now but that no good.anything else I need ?steve .nice videos
So what arduink will work Andrea .how’s things over there
Maybe you watch all my Nextion videos?
Is there any new thing? Or is Nextion still the best option for home automation? Now a days they are much more expensive than similar displays from other brands (without all nextion features)
I do not know, I did not look into this topic for quite a while.
@@AndreasSpiess Danke Schön!
None of the examples work with the latest version (1.61.2) of the Editor.
Well possible if you look at the date of the video...
@@AndreasSpiess Thanks for the response. I have since found that you can use the long term support (LTS) version of the Editor to open the examples and it will convert the HMI files to a later format on save. This updated copy can then be opened with the latest (as of now 1.61.2) Editor. It just means you have to have both editors installed, and you might have to update file permissions depending on your Editor installation details. I hope that's useful.
Please let me know can I increase 4MB flash memory of Nextion 3.2" to 16MB or higher?
Nextion 3.2" has Winbond 25Q32 it is 4MB flash if changed it from big size like Winbond 25Q256 it has 32MB Flash memory?
I do not think that the software on the display would support that change.
@@AndreasSpiess
I will try it if it would run successful so good otherwise I will put old one.
@@AndreasSpiess
I made a program it contains 11 pages but nextion 3.2 has rMB flash.
Is there any method to reduce size of tft file
Big downside of this - their ui tool only works on windows :-/
As many other software :-(
You can find it here on Aliexpress: www.aliexpress.com/item/3-5-Nextion-HMI-Intelligent-Smart-USART-UART-Serial-Touch-TFT-LCD-Module-Display-Panel-For/32491366429.html
+Sven Troncquo Thanks for the link. I think, iteadstudio sells them also directly. But I am not sure.
+Andreas Spiess i just came across something on aliexpress which i wanted tot share with you.
It's a quad band GSM gprs module for around 4 euro's.
Smart Electronics GPRS module GSM module A6 \ SMS \ Speech \ board \ wireless data transmission adapter plate
s.aliexpress.com/bENb6Vfu
(from AliExpress Android)
ai-thinker.blogspot.be/2016/03/ai-thihker-a6-gprs-gsm-module.html?m=1
+Sven Troncquo Thank you very much for the tip. Looks good. I ordered one for a test!
just find your videos and already love them! can not wait to learn so much from you!
Thanks and welcome to the channel!
Hi Andreas... Do you have a video where you show how I can to use arduino to upload the Nextion editor file to the HMI display? or the code for the arduino in order to use it as a USB serial writer... Thanks
No. I always used a serial adapter.
Allo Andreas , Thank You so much for all your awesome , informative and entertaining video . Can this display show a camera feed ? say for a rearview camera , not a back up type camera , i mean a mirror view , like what we see when we look at our side or rearview mirror in our cars ? Cheers & be well .
This display is not made for video.
where do i find the .zi font files ?
I do no more remember. This is a vary old video and things might have changed.
Hi Andreas, many thanks for the tutorial and all of the information - I had not heard of this display and can see it will make a simple job of providing a pretty UI for my projects. I have just received my display and wonder where the original HMI and TFT file is that came programmed on the display? I can see that you edited it to change the buttons on the gauges, but I can not find it. Could you point me in the right direction please? Thanks again, Ian.
Thanks your nice words. There is a second video with more details about programming the Nextion an there is the link to my files: github.com/SensorsIot/Nextion-Tutorial
Tönt wirklich interessant. CapSense, z.B. hinter einem Stück Holz steht schon eine Weile auf meinem Wunschprogramm.
Sir,
First of all thanks for sharing such a valuable guideline regarding this good touch screen
I was searching this kind of LCD from many many months
I want to use this LCD with one of my Temperature and Humidity controller with DHT22 sensor.
Could you please guide me, how to communicate all these things with this LCD.
thanks in advance
You find many videos on the DHT222. Just search, please
So the card reader on the Nextion display is used only to transfer the .TFT file? Seems like a bit of a waste; it would be nice if it could also work as a card reader (accessible by the microcontroller). I wonder why they used a card reader instead of a USB port.
+RFC3514 The serial connection to the microcontroller is only 9600. This is not enough for SD content transmission.
There is a possibility to transfer the content via Serial to the device. I did not use this feature in this episode, because the way with the SD card was ok for me. Maybe I will use it in the next episode about Nextion.
Andreas Spiess Well, it would be slow, but it could still be useful to have access to the card.
Is there at least some way to have multiple .TFT files on the card, and use a command from the microcontroller to select which file should be loaded?
It seems some potential is wasted, if the only purpose of the card slot is to load a single file.
+RFC3514 As said in the video. Only one file is allowed. You can remove the SD card. It is only for loading.
Does anyone managed to connect a Nextion display with an ESP8266? If yes, how??
Maybe you have a look at my video #63 (if not already done)
Thank you Andreas! I'll try it when I got home from work!
Just compile and go to "open build folder" in the File menu. Then you will find all tft files
great video . what a great demo and explanation . I had seen these before but never working with explanation . I assumed them just to be slow serial screen with slow SD card support and a bit of page memory .
Looks like just the sort of think that would solve a few of my projects .
+XerotoLabs When I saw it first, I also did not understand the concept fully. I think, at the beginning, they also had many problems with their software. Now, It seams at least usable. The editor still has version 0.34!
Merci für das video :D es hät mer sehr gholfe bi mine projekt. Witer so :D
Bitte, gern geschehen!
Hey my friend, thank for your vídeo!
I have a problem with Nextion and Arduino, ¿Can you help me?
I need ejecute one "while" cicle, I put it on sub-rutine that one button:
void b12PopCallback(void *ptr) {
var = 1;
while (var == 1) {
digitalWrite(s1,LOW);
digitalWrite(l1,LOW);
digitalWrite(s2,LOW);
digitalWrite(l2,LOW);
delay(500);
digitalWrite(s1,HIGH);
digitalWrite(l1,HIGH);
delay(7000);
digitalWrite(s1,LOW);
digitalWrite(l1,LOW);
delay(500);
digitalWrite(s2,HIGH);
digitalWrite(l2,HIGH);
delay(7000);
digitalWrite(s2,LOW);
digitalWrite(l2,LOW);
}
}
But I need with other button in the nextion pant get out of the cicle... And I can't, because I don't know how listen a button in the nextion, inside sub-rutine of other button.
Please HELP ME!
You have to rewrite the whole program. It must not contain delay(). Use instead:
if (millis()-entry>7000) {do what you want; entry=millis();}
I think you have to put your logic in the main loop. Maybe you google "State machine Arduino". Here a hit: ruclips.net/video/jrFQlspRgWw/видео.html
You have all reason, I now change to delay and move the While cicle in the loop, but I cant exit of this "While" with a nextion button. I don't know about the "State Machine arduino" now I will see your video to understand one few more.
Pronounce gauge: ruclips.net/video/sOMt06XrPUg/видео.html
Thanks. I learned it in the meantime...
Hi there! you are an Idol for me, really enjoy your videos!!
I wanted to ask for an interesting request: Do you know if it is posible to program this display with ESP8266 attached to them using OTA or the IOTappStore ??
I made some projects with this display, so I am in the need for this feacture so I can make complete updates of the projects!
Thanks anyway!
It should be possible. The ESP8266 has a serial connection and if you implement the new library, it should work together with IOTappStory.com
I think it's going to be complicated to compile the nextion display by sending the .tft file from ESP8266, could be a good idea for a future video! Thanks for the reply!
This is indeed not simple if you also want to change the Nextion code. Maybe using SPIFFS. And ASAIK you also have to switch the Nextion on and off.
Very Nice! I'm looking forward to the next video on these displays.
Can you show some update/performance for these? And, power consumption?
These might replace a much more expensive and power hungry display for my next project.
+Corgitronics The second video has to wait a few weeks since I have other projects in the works. But I will try to include your points. The 3.5" display in the video with the slider sketch takes 160mA.
Can I make a laser distance meter with this ?
It is a display...
Gauges is pronounced like the word ages with a hard g, you pronounced the g right.
+天照 thanks for the tip!
Your tutorials have gotten me up to speed on the Nextion display pretty quickly.
I started on the Uno and followed your directions to modify NexConfig.h for no dbSerial port. Worked great, but I still wanted to see debug statements. So, I bought an Arduino Mega on Amazon and restored NexConfig.h to the original file.
#define DEBUG_SERIAL_ENABLE
#define dbSerial Serial
#define nexSerial Serial2
The example sketches work fine except that I see nothing in the serial monitor. I also ran some tutorial sketches by InternetlinkKnight that sends data to the Nextion display without using the library, and both serial ports on my Mega work just fine.
I set the serial monitor to 9600, but I couldn't find anywhere in the library files where the serial port is initialized.
Any ideas why the library doesn't work with dbSerial.Println() for debugging statements?
Thanks,
steve
I made a video about the setting of these parameters. It is on the playlist.
Thanks Andreas I got to know about Nextion through this video around 15 months ago and in June 2018 we became Distributor for Nextion Displays in India all thanks to you :)
Glad to read that! Thank you for your feedback.
Ich bewundere und möchte Sie aus der Schweiz begrüssen ;))))
Gruss zurück!
Hello
I would like your help, how can I use this slider to control the intentions or PWM of a led? I am new at this! I do all the procedure that is shown in the video but I do not know how to integrate the code that you provide to be able to control the intention of a led through the screen. Would you be so kind as to give me your help?
1. Watch my videos #59 and #63
2. Start with one of my examples and stay with them till they work
3. Look at the examples provided with the Nextion library. If you want to use a slider, use the slider example. Make it work and understand, how it works.
4. Try to control your LED with a PWM signal without Nextion (if not already done)
4. merge the two sketches.
I will show the arduino sketch so that they better understand my question.
I need to replace the variable (button) created by me in the arduino sketch, by the slider created in the nextion screen. When I move the slider or button on the screen the value of the variable (light) varies from 0 to 255 as the arduino PWM value.
In the examples # 59 # 56 Nextion Display Tutorial you create a (Slider)
When you move the value changes, I want to do that with arduino PWM output. Example # 56 works for me, it loads everything fine, but example # 59 does not give me an answer, I press the buttons and it does not change any value. I am using (Arduino UNO), the library (ITEADLIB_Arduino_Nextion-master) as previously said example # 56 I everything works fine but the arduino # 59 does not respond to commands on the screen.
I'm going to extract the arduino code so they can better understand my question.
I need to replace the variable (button) created by me in the arduino sketch, by the slider created in the nextion screen. When I move the slider or button on the screen the value of the variable (light) varies from 0 to 255 as the arduino PWM value.
In the examples # 59 # 56 Nextion Display Tutorial you create a (Slider)
When you move the value changes, I want to do that with arduino PWM output. Example # 56 works for me, it loads everything fine, but example # 59 does not give me an answer, I press the buttons and it does not change any value. I am using (Arduino UNO), the library (ITEADLIB_Arduino_Nextion-master) as previously said example # 56 I everything works fine but the arduino # 59 does not respond to commands on the screen.
Arduino sketch
Https://drive.google.com/drive/folders/0Bw_1q_JGws0Ycm1xamVTZmJwd1U?usp=sharing
Int pin = 3;
Int button = A0; // Replace the button with the Slider
Int light;
Void setup () {
PinMode (pin, OUTPUT);
}
Void loop () {
Light = analogRead (button) / 4;
AnalogWrite (pin, light);
}
Please look at the code which works and try to understand it first. This is not easy stuff and it might take you quite some time to do that.
First, you have to understand, how the values are transferred from the Nextion to the Arduino.
In the slider example, you find the value of the slider here
h0.getValue(&number);
void h0PopCallback(void *ptr)
{
uint32_t number = 0;
char temp[10] = {0};
dbSerialPrintln("h0PopCallback");
h0.getValue(&number);
}
As usual.. very useful review - in Swiss accent :).
that would be nice display for quick games for my kid. Any idea about current consumption ? can you may be try measuring current / power consumption with slow , fast rendering animations/texts. i am curious to know how long it might work on batteries.
thanks again...
+Electromania The 3.5" display in the video with the slider sketch takes 160mA. Be aware, that these LCD screens are not as responsive as the one on an Iphone. You have to press more to get a reaction.
thanks.. i can expect more pressing force since it is resistive touch screen. at such low price we cannot expect too much.
I usually work with Touch Screens where their shields occupy most of my MEGA's ports and always do all the coding.
This can come pretty handy when designing the UI and I can program the rest. Cool stuff, thanks for the video!
This is exactly the scenario for which Nextion was invented...
Indeed. Thanks for the video, I'm going to buy one soon. Subscribed!
sir can we convert computer in mirror i mean normal mirror and how make touch mirror ???
I do not think so.
hi andreas, I bought a screen nextion NX4832T035 in aliexpress link, I saw your videos on how to configure it and I wonder if you can share the image library you see in the videos, thank you very much for your great contribution.
I have no library, just google. Or do I miss something?
hello, if it is a bit difficult for me to find things on google, I do not speak very good English, I use google translator to write here, also in the search in Spanish (Chile) all that comes out are direct pages nextion, if so kind as to send a link I would greatly appreciate it, thanks again for your contribution.
Hi, first of all, thank you for the great video: I'll be trying those displays ASAP.
I see you're concerned about the dimension of the buttons, but, checking the producer's page (nextion.tech/basic-series-introduction/) we can read that "All Basic Series products are resistive touch panel type". Contrarily to the rigid and inaccurate capacitive touch screens a certain dumb person wanted to be used in modern smartphones, resistive ones are pixel accurate, if used with the tip of the fingernail (or the stylus).
Anyone who's ever happened to use a PDA (en.wikipedia.org/wiki/Personal_digital_assistant), a Nintendo DS (en.wikipedia.org/wiki/Nintendo_DS), or a ~15 years old Windows Mobile (en.wikipedia.org/wiki/Windows_Mobile) smartphone (not to be confused with Windows Phone ones) knows that there used to be icons smaller than a button on a modern days phone on screen keyboard, and that it was extremely easy to use them.
So, don't worry if the buttons seems to be too small: the example you downloaded was created by the same guys who developed and sell the product, so we can easily assume they wanted that example to illustrate real possibilities and use scenario of their product.
Check the first image on Windows Mobile page, for example: those icons representing signal strength, battery charge, and volume, are all individually clickable... I was puzzled and frustrated when I switched to Android, and I still can't understand how people can have been so dumb and blind to switch from an accurate input device to the dumb one we're forced to use today.
Since Steve Jobs invented the Iphone things changed a bit and the "gold standard" seems to be the finger. Maybe it will change. The Ipad and some smartphones come with a stylus...
@@AndreasSpiess Well, they did introduce back the stylus, mainly because they could, since Jobs is now long dead: he was the guy who didn't want it.
Jobs didn't even know how a (resistive) touchscreen used to work, he had simply heard about it and thought a stylus was MANDATORY for using it (like I said, I rarely used a stylus on a WM smartphone/PDA, or a TomTom®).
You can find more info on fossbytes.com/the-iphone-would-never-have-existed-had-steve-jobs-never-hated-a-guy-at-microsoft/ where we can read "the creation of the iPhone stemmed due to hatred, and not due to the technological hindsight of Steve Jobs"
Funny thing is, nowadays I do have to use a stylus for doing things that I was able to do without it many years ago, and that stylus is both quite expensive and delicate, so I don't wanna loose or drop it.
well, look at that. been watching a few of your vids this week and I was googling for info on these HMIs and here we are again. subscribed! "HMI" devices pretty much exactly like these have been around for a VERY long time for industrial applications. it is nice that they are finally cheap and small enough to build into portable projects!
Welcome aboard the channel!
this is in my camper vanwith 12volt system .I have mppt controller with bluetooth at moment
Good idea!
is this ok bangood?Nextion Enhanced NX4024K032 3.2 Inch HMI Intelligent Smart USART UART Serial Touch TFT LCD Screen Module
and the 2560mega they seem cheap
This seems very cool. Do these displays have a controllable backlighting option? If not, do you happen to know of any displays that do that for the Arduino?
You can control the backlight with a value in percent (by command)
Awesome, thanks, I'll definitely check this out!
Great product, I've looked for something like this before but didn't find that, thanks for a very useful review!
+jix177 I hope, they many people will discover this product and they have success with this idea.
can you tell me, how to connect nextion 7 with arduino due, because due is 3,3 V and nextion need 5 V? tnx
Find a tutorial about "level shifting" between 5volt and 3.3volt. There are many possibilities. Do not connect it directly to the Due inputs because it might destroy your due board.
Cool and inspiring... Salü
Thank you!
A clever HID that I wouldn't have known about without your video. It is, effectively, a programmable terminal for an Arduino server. Thank you! I bought one through your link. We'll see if a soft keyboard is possible. This can put hundreds of control mechanisms in the space where only a few mechanical switches and indicator LEDs would normally fit! Wow! Here is a link to one of the wiki pages with electrical specs: www.itead.cc/wiki/NX4024K032 - I don't know if these are the same devices, but device clones tend to be very similar, electrically. Thanks again!
Mine is also from Itead.
This is really a game changer in displays for arduino. Thanks for sharing. Looks like I just need to buy one hahaha
If you use one of the links in the description to buy one, you can support the channel...
I think I timed starting my radio-building hobby at the PERFECT TIME! Open Source is the Future!
You are right. It is like in paradise!
Thanks Andreas. I fixed my problem, I was having a "PICNIC"! Problem In Chair Not In Computer. I'm curious though, how did you get the word "HOT!" to show up at 10:57. Mine doesn't do that, the numbers just increase. thanks.
I do not remember. But I assume I make a check in the Arduino sketch
I have a suggestion for a video or at least a code project, and it is a little self serving.. :-)
I am trying to use the Nextion with the ESP32, I want to read temp from a sensor in one core and use the other core to update/control the Nextion.
I am having trouble trying to split up the code between the cores and files as I am unsure what the Nextion needs in file VS what goes in to the main loops for it.
Any help you can provide would be great, and to be honest you are my reason for attempting this. :-)
Thanks,
John
Maybe you watch my video about ESP32 on Steroids.
Which number is that, I didn't see any that said "ESP32 on Steroids". I did watch the one about cores and tasks.
Grüezi Andreas - another great video with very valuable information, as i'm also considering using the nextion displays in the future - great content and a nice swiss accent :) makes it really funny to watch.
+emgab Thanks for your nice comment!
do you have the slider code?
Everything I had is in the GitHub repo
On display its possible to show 4 or 5 analog signal on real time like an oscilloscope?
I do not think so.
Can it be connected with TM4C1233H6PM ??
Kindly guide me
Nextions only need a serial connection with 9600 baud which most of the modern MCU, also the TM4C1233H6PM, have. But you need also code to drive the display. And there, I do not know because I do not work with TI processors.
Usefull
Thanks!
Great tutorial - will def be looking at this for upcoming Arduino projects. Thanks for the “discovery”!
You are welcome!