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there is a cable that can be used to connect the raspberry pi usb or serial to the rs232 using rj45 connector?

Hello Mark, I need help. I want to print multiple commands from Nextion to my ESP8266 but it does not work as I want. This is what I want printed. print "#ACTIVE MONDAY;" activeDay.txt="MONDAY" print "#PAG SCHEDULE_1;" each command is space-separated #Command Value; I have a function that parses it in my code, and everything works until I try to print multiple commands like above. Then I get this in my code: "Command: ACTIVE - Value: MONDAY;#PAG SCHEDULE_1" instead of "Command: ACTIVE - Value: MONDAY" AND "Command: PAG - Value: SCHEDULE_1" This is my code void Display::listen(){ if(Serial.available()){ String dfd = ""; delay(30); while (Serial.available()){ dfd+= char(Serial.read()); } if (dfd.startsWith("#") && dfd.endsWith(";")) { dfd = dfd.substring(1, dfd.length() - 1); // Remove the # and ; // Extract two space-separated strings COMMAND AND VALUE // 1) GET COMMAND String command = dfd.substring(0, dfd.indexOf(" ")); // 2) GET VALUE String value = dfd.substring(dfd.indexOf(" ") + 1); Serial.print("Command: " + command + " Value: " + value+"----"); Serial.print(NEXTION_END_STRING); // 2) Execute command handleCommand(get_command(command), value); } } }

Can you send all codes written as comment?

I tried many times but couldn't

hey, is it possible to send, for example, a simple Windows application written in C# in Visual Studio, datagrid view tables, e.g. 5 rows and 5 columns, to nextion? What is the best way to do it, as a whole file or in rows?

Hey, i try the code and got an issue, its says motorDelay was not declared on this scope. I use esp32 for the board. Please help

That is the absolute 1st time anyone explained what a radian is so succinctly. I only understood radians by comparing to degrees before this. Thank you and kudos to you!

Hi , My project has 4 page . I want to use chronometer, but timer is working just one page, other pages are undependent, do you have any idea about this siituation?

Hook up the page change to the release event of the object and there is no problem.

This was INCREDIBLY helpful! I was able to get a 12v DC motor working with my L298N motor driver/Arduino because of this video! It’s so cool. THANK YOU 😊

This device does not support this component.

i have timer with this screen but i want to make password if nobody touch screen within one minute

I am making progress in understanding how to program the ESP32 and the Nextion. It is slow but I am making progress in a determined way. Now I cannot find any videos of sending a signal from the Arduino to different pages on the Nextion. If I comment out page 1 on IDE then there is no problem in getting the boxes populated from the Arduino to page 2 on the Nextion. Also when moving from page 1 to page 2, data from the Arduino is deleted on page 1. Have you experienced this or is it jut a feature of the Nextion? I currently have 6 numbers boxes that are populated from EEprom in the Nextion but can be updated and saved back to EEprom. I do like to see the same data coming back from the Arduino sitting in a column of number boxes alongside. To complete the project I am working on I need to have a second page of both number boxes and text boxes. At the moment I am stumped. Can you help? John

Acho sacanagem a versão enhanced não ter combobox e recursos de listagem arquivos. É tudo interface gráfica. acredito que isto esteja limitado não por causa do processador GPU mas pelo software para nos obrigar a comprar a versão inteligency. Não se consegue plotar nada de diferente ou fazer melhorais na interface somente o que o software de componente proporciona. Se eu tivesse sabido disto antes não teria comprado o NEXTION e sim investido em outro melhor que possa usar recursos da LVGL. Vivendo e aprendendo. Ao menos serve para fazer coisas rápidas.

Excellent video!

Code

Thanks very much for the video, I am running the nextion in debug connected to my ESP32, I am getting a parse error on the simulator return... The MCU return is in the form: HEX(77 65 70 6F 20 32 34 2C 33 31 38 FF FF FF) STR(wepo 24,318ÿÿÿ) does the data from the MCU look correct?

"Dont fall asleep" that was funny. Once again clean and concise. Thanks

Because of this tutorial. I'm becoming more smarter. Thank you for the clear and concise explanation.

Your excellent videos are what made me confident that I should be able to set up a Nextion tft with Esp32 demos d1 board. I have had no problem in placing buttons and getting them to interact as required. However I seem to be a bit stumped in getting anything to go from the Esp32 to the Nextion or vice versa. I have set up the code with 2 serial ports and so far have no errors compiling. I definitely do not have a hardware problem as I have duplicates of everything. I can compile the respective codes and download to both the Nextion and the Esp32. In going through your code in this #137 video, I have a problem with.... prints "val".0. which throws up an error code... Invalid number of arguments. If I enter prints n0.val.0 I I get 2 errors....Invalid number of arguments. I have tried going to your site and downloading and copy of your code to try but the link is not working. In you tutorial 59 you said that you couldn't get prints working. Have I missed something somwhere? Finally I have a wretched error message says invalid variables page. Actually I dont have one as I deleted it! so have no way of getting error free code. Can you help please. John

you saved a heck of time

sir how you make pop up keypads on your screen please sir help me

Hello, I have a problem by changing pages. I have one button and two pages(page1 and page2) First the screen stays on page1. When button is pressed, it will switch to the page2. button not pressed. the page2 can't back page1. I tried a lot of time and couldn't do it. like this↓ val = digitalRead(BUTTON_PIN); if(val == LOW){ Serial.print("page 1"); } else if(val == HIGH){ Serial.print("page 2");

Thank you for the video, great explanation 🙏🙏🙏

Son muy buenos sus tutoriales!! Muy bien explicados. Me podría ayudar con una duda por favor, tengo un botón en mi pantalla Nextion, requiero que al presionarlo se ejecute una interrupción en mi arduino DUE, que instrucción puedo usar??. En botones conectados fisicamente se usa la instruccion "attachInterrupt". En este caso cual instruccion debo usar?

thank you, but i am strugle to sending text(string) can u explain it to me?

Hello, link for the code is not working anymore, can you update it ?

Hello, thanks for the video, I'm able to make progress on my project. How would I approach selecting a particular SSID to enter a password for??

Thank you for all the videos you guys have made.

Maybee I'm stupid but howto connect the Nextion against the Arduino sry I'm a newbie 57years old

Bardzo Ci dziękuje. Od dwóch tygodni próbowałem połączyć Arduino Mega z Nextion. We wszystkich tutorialach był błąd w składni, dopiero u Ciebie jest poprawnie. Działa wszystko. Jeszcze raz bardzo Dziękuje.

Very Well ❤🤍💚

why we are using 2 serial

Very Well ❤🤍💚

Trying to find a way to upload new screen firmware from the mcu, not a pc. Any suggestions? Thanks

Hello, I would like to ask some questions. I use the 2.4-inch expansion IO to output two channels of PWM to my expansion hardware, which causes the slider function of the touch screen to freeze. I have never found the reason. Have you encountered it? Can you give me some pointers? Thanks

when I put my code in arduino, the motor is running and app is not responding

Was trying to make use of the Adafruit library for the PCA9685. I found your video quite useful to compare what you did vs. what the library was doing using a logic analyser, and thence to find where the library wasn't working right. I'd add as a note for anyone else who is coming along to this video, that you have to set the PCA to 'sleep' mode before you can change the PWM frequency from the default 200Hz to the 50Hz required by servos (Register 0xFEh, value 0x83h), and that the 'invert' bit in mode 1 is useful when driving servos . Thanks for taking the time to upload!

uhmm..i fim taking measures from a sensor, every time i change page i should replot the whoel graph? so...i should store in my MCU memory all the datas then resend for each page change, am i right? thanks a lot

Awesome video, this is exactly what I've been looking for. Is the source code for Arduino still available anywhere?

you are a HERO. nextion manufacture's help is so basic, you nail it RESPECT

Thanks for the great tutorials. However, I have difficulties querying the buttons and displaying the temperature of a sensor at the same time, for example. The buttons then no longer work. Is there a solution ?

Been awhile since any posts, miss them. Hope you're ok.

Confused. The person giving the lesson seems real knowledgeable and helpful. Why are we getting an editor jumping in complaining about needing to do editing? This seems unprofessional. Perhaps I missed something. This is the first video I have watched by these folks.

this is not working on basic screen?

hey, thanks for videos!!! great! for some reason i dont have transparency option for text. for both versions LTS and 1.65.1 any ideas why? only crop image nx3224t024

Not only "post-initialize" is run, also "pre-initialize" for the page is run! so as if the page has been activated

In serial monitor after j0.val=data??? Can you please explain why 3 question mark is there after data

thanks for videos! great job. is there any option to make animations? for ex fade in? or only video files? (gifs too)? Can i move item from place to place? getting compile error trying to move with p1.x++

hello! I am a Korean high school student. You explained it really well and I understood it well. I will learn diligently by watching your other videos. thank you!