ESP32 Web page creating and updating

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This video will show how to use your ESP32 for creating and updating web pages. Learn how to 1) create an access point for client connection, 2) serve a web page using HTML, 3) make fast updates of changed data on the page using AJAX and XML, and 4) receive user interactions like buttons and sliders for making settings and changes from the web page.
This video is fairly detailed and long, but hopefully with the included sample code, you will be able to create fancy web pages that let you update data quickly and allow users to makes setting changes from the web page.
Use this technique for home automation systems, control systems, remote monitoring systems, telemetry etc. Send and get data from your web page made easy.
This tutorial uses a standard ESP32 micocontroller and the Arduino IDE. The web page is written HTML, uses CSS styling to make the web page look better, and java script to update portions of the web page from XML sent from the ESP.
code at:
github.com/KrisKasprzak/ESP32...

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Опубликовано:

23 окт 2021

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Комментарии : 208

@user-st8bb2gs9e 2 года назад

RU-vid.... Why the hell i need to search for hours, when there is such a good video ?????

@amelliamendel2227 Год назад

I've been looking for weeks. None of the dronebot code works anymore

@Mr0rris0 2 месяца назад

Because the grocery puts what you need at the back so you gotta look at everything and up the chances the house wins when you impulse buy some oreos Oreos is like put me in rhe way we gotta be in it to win it. Meanwhile we can't afford nothing so it's a convicting consumer chorus ultimately Ya know everything is baked in. Industry is held up by their seeming inability to know I ain't got money but they advertise anyway. That's a waste and it's priced into valuations down stream Who benefits from me getting laxative ads on the can because I took too long. Nothing about my file should indicate I've ever bought a single thing advertised to me. They have wasted like billions probably I won't break though because I'm BROKE 😂

@nelsonmartins8995 Месяц назад

say that again, but now slowey and you´ll get it

@nicolaspillot5789 2 года назад

at 14:06 the 200 is *NOT* a timout/timer/delay, it is the http réponse status code, which tells the client if his request succeeded (200) or not (4xx) or if the server had an error (5xx)... look up "http status codes"

@briankendall1978 2 года назад

Kris, Thanks for taking the time share this information. So much better than the typical "lets turn on and off an led" video.

@KrisKasprzak 2 года назад

Glad it was helpful!

@thisoldjeepcj5 5 месяцев назад

Thank you for the tutorial and code sample.

@DailyCakeSlice 2 года назад

Wow. You absolutely rock. The video and code are incredibly helpful and super clear. Seriously, I cannot thank you enough!!!

@KrisKasprzak 2 года назад

You're very welcome!

@texasapps2595 Год назад

YOU MAN! YOU ARE THE BEST!!!! I've been looking for months how to update my variables without refresh the page! and you take your time to explain in a very clean way! ThankYou from Ecuador x1000!!!!!!!

@KrisKasprzak Год назад

Glad I could help

@larryd6801 7 месяцев назад

Every time I recommend this video, the person says you should have blown the dust off the fan blades 😉 . Thanks again for sharing this ! ! 👍

@your_utube 2 года назад

Amazing what you had to go through to just come to grips with the web stuff. Those of us who have been at it since the early 90's can tell you that the learning curve is steep, especially now that there are so many options out there. JSON is pretty easy to use, because XML is not that popular anymore as it used to be decades ago (am I really getting that old?). Your system is just superb and I started this week with ESP32 and I am amazed at it. Never really worked with an MCU before. I knew waht ti was and what it was sued for, but nice to do it hands on. Your type of videos are so invaluable in inspiring and showing those of us with big ideas that our ideas are not silly, because it has been done already. Thanks again.

@KrisKasprzak 2 года назад

Glad I could help post an update of what you’re doing I’m sure my subs would like to hear other stories

@evilkittyofdoom195 Год назад

This actually made sense to me, will try this weekend thank you.

@frankmayo1410 Год назад

Very fine video! Well explained and something I've been looking for to make my project. Thank you!

@user-co8un6lx3t 2 года назад

Спасибо, ваша работа дала мне больше понимания для постройки web интерфейса 🤝

@mattthewizard829 2 года назад

hi Kris, just wanted to say that your tutorial is amazing! so much context, and guidance. It's so awesome that you take the time to explain the "what could go wrong" scenarios, and give tips on how to debug. I feel these are the most important subjects when learning to program, shit will break, and how do you resolve that. Thanks man!

@KrisKasprzak Год назад

Glad I could help

@dlveach 10 месяцев назад

Great tutorial. Lot of content but you cover it well with a nice fast pace. Wish many other RU-vidrs would do that!

@KrisKasprzak 10 месяцев назад

I appreciate that!

@thomasvieira Год назад

Very well documented repository and code! Congratulations!! Very usefull and nice to understand. Thanks

@KrisKasprzak Год назад

Glad it was helpful!

@stevesopenrocket 11 месяцев назад

For the first time some of this makes sense, thank you. The only thing I need now is how to get the video off a esp32 cam.

@oledodeck Год назад

What a great tutorial! Thank you so much!

@KrisKasprzak Год назад

Thanks.

@MitzpatrickFitzsimmons 2 года назад

This is excellent! Can't wait to try it out.

@KrisKasprzak 2 года назад

Hope you enjoy it!

@JohanDegraeveAanscharius Год назад

FINALLY, I found someone who makes it simple!! Thank you so much!!

@KrisKasprzak Год назад

Thanks for the compliment. Hopefully it will help you create some cool projects.

@jocimarsilva9425 Год назад

Excelente aula, muito útil, parabéns!

@hernanyretarino5336 3 месяца назад

This is "VERY HELPFUL" Thanks a lot for posting video like this. ❤

@rikilshah Год назад

You made an amazing video with such a detailed explanation.

@KrisKasprzak Год назад

Glad it was helpful!

@PabianPL 2 года назад

This is great tutorial :)

@murraymadness4674 2 месяца назад

LOL, whenever I watch videos like this that show code I'm always trying to scroll down or up to see or re-see something. Always makes me lol

@KrisKasprzak 2 месяца назад

Don’t forget, there is a link to the source code in the description.

@murraymadness4674 2 месяца назад

@@KrisKasprzak Great, I will download it and probably use it as a base for my app. btw, I created one of the first commercial websites in the world, it was static html served by a ftp server. My last real job was hacking a massive web app for telemedicine video conferencing, scheduling, test results, etc. And I want nothing to do with that complexity anymore!

@wes3428 Месяц назад

I was doing the same thing!

@mrpraphartRompruek Год назад

Kris,Thank you, this tutorial is so useful for me and every one.

@KrisKasprzak Год назад

Glad it was helpful!

@digitaldaridesatv1545 Год назад

I love this tutorial!

@KrisKasprzak Год назад

Glad I could help!

@urrick33333 Год назад

Awesome content! Thanks for the video!

@KrisKasprzak Год назад

Glad you liked it!

@attariazeddine6603 5 месяцев назад

Excellente présentation, bravo et MERCI

@Jorge_AS_Fernandes Год назад

This is a great project. Thanks for all the work! From Portugal

@KrisKasprzak Год назад

Obrigado!

@sandryseibert 2 года назад

Outstanding job. I'm just updating all my IoT toys here at home. Wish I can pay you a coffee!

@rarenu 2 года назад

All your videos are great assets to learners like me. You stand apart from others in your uniqueness and it is really a god's gift. Bring out your ideas to the world, let the present and future generation learn, benefit and cherish. With Great Regards and Best Wishes.

@KrisKasprzak 2 года назад

Thank you for your kind comments.

@haose5513 3 месяца назад

Great code man Thank You so Much. The code & explanation is very intuitive & concise. I never code other than C (beginner level) language before, so I was very happy my logic was aligned with the code. Other tutorials just feel so incomplete

@KrisKasprzak 3 месяца назад

Glad I could help, keep inventing

@PhG1961 2 года назад

Omg, this is a really awesome video !

@KrisKasprzak 2 года назад

I'm glad you like it

@lone-eltemplodeltalento6196 2 года назад

Thanks for the video. Never used XML in webpages. I used json along with "fetch()" function to request data from server and it works quite well. And yes, there are also videos on youtube where people use websockets when real time communication is needed. Its doesnt seem too hard to do.

@TrillShatner Год назад

Yeah, buddy mentioned that web socket is used more for monitoring and live debugging… Absolute easiest, and most lightweight method is just posting with Ajax. Laravel’s Request Model makes it stupid easy.

@S--xc4rv Год назад

can u provide me that videos of real time communication ?? please ?

@vaibhavbhardwaj8895 Год назад

1 min in and i already love the video

@KrisKasprzak Год назад

Thanks for the positive comment

@TimoBirnschein 6 месяцев назад

Wonderful tutorial! Thanks a lot for sharing! Also: Great voice!

@KrisKasprzak 6 месяцев назад

Glad I could help!

@lundebc Год назад

Excellent video for me, as I can program all the sensor reading and such, but am lousy with the HTML/XML/Web Server. This helped me a lot!

@KrisKasprzak Год назад

Glad it helped!

@blatogh1277 Год назад

amazing, got to monitor the robot arm swings using this tutorial

@blatogh1277 Год назад

finally, my project works!

@KrisKasprzak Год назад

Glad to hear it.

@gearscodeandfire Год назад

How the heck did the algo only now introduce me to your channel? Great work.

@KrisKasprzak Год назад

Glad you liked it.

@vagnerzupo910 2 года назад

Muito obrigado por compartilhar seus conhecimentos.

@JeahBee66 2 года назад

Great Job, thanks a lot!

@KrisKasprzak 2 года назад

You're welcome!

@JohnJCouture Месяц назад

Great Video, Thank you.

@KrisKasprzak Месяц назад

Glad you liked it.

@cyberphox1 20 дней назад

Nice, just starting out with ESP32 👍

@KrisKasprzak 18 дней назад

Have fun!

@larryd6801 2 года назад

Kris: Hi from Canada. I tried it, I love it ! This example is the best. Thank you for spending the time in putting this together. Thank you for sharing your skills with us. Fantastic. PS, the wife says you are good looking. 🙄

@KrisKasprzak 2 года назад

Glad I can help, and tell your wife thanks for me

@EZtech 2 года назад

Works Great! Awesome! And my favorite...lots of commenting in the Code. lol

@KrisKasprzak 2 года назад

Great to hear!

@indianspacedefencestrength1892 Год назад

It worked! Tank you sir.

@KrisKasprzak Год назад

Glad it helped

@HiLight7777 Год назад

Great video, I love it. Rare video with a lot of details :D tnQ

@KrisKasprzak Год назад

Glad you liked it!

@dangeruss001 Год назад

Thanks, you saved me alot of time.

@KrisKasprzak Год назад

Glad I could help

@gabrielwedsonmendonca239 8 месяцев назад

Amazing! Thanks!

@KrisKasprzak 8 месяцев назад

Thank you too!

@gabrielalmeida5047 Месяц назад

Excelent video, thank you.

@KrisKasprzak Месяц назад

Glad you liked it!

@kychemclass5850 2 года назад

Hi Kris. You seem to like challenges.... so here's one: Get the ESP32 to dump live data into Libreoffice Calc whereby Calc charts the data coming against the time the data came in.

@rverm1000 Год назад

cool nice to see a different coding video

@KrisKasprzak Год назад

Glad you liked it!

2 года назад

i loved

@automationsolartrack2634 2 года назад

Thanks!

@KrisKasprzak 2 года назад

Welcome!

@mrafayshams3089 2 года назад

Brilliant manifestation of practical use of websockets and esp32. I have one question though. How can we send and recieve asynchronous data to an actual website that we create with html, css, and js rather than running it on the local host? Thanks and Best regards.

@seanperez1210 2 года назад

Nice👍🏼 much needed clear tutorial. I’ve seen dozens of tutorials but that refresh the page all the time. Instead of Ajax and xml, would this work with websockets ? That might take this to the ultimate level 🙂

@KrisKasprzak 2 года назад

Website is is definitely the ultimate I’m just not sure what kind of library support is out there

@AllertonEPS Год назад

Amazing thank you so much - as you say it is SO confusing - trying to chase things through - and your video takes a lot of the mystery out of the coding. And as you say at the start - most demostrations only show one aspect where as you have demonstrated multiple aspects of web page response systems. Have you come across ESPASyncWebServer ? - Think that is another way which might take care of website updating and avoiding rebooting of the device due to Timeout. Thank you so much for publishing this video - fantastic ...

@KrisKasprzak Год назад

Thanks, glad I could help.

@djkatt9604 2 года назад

Hello, first, thanks a lot for your video and your time to explain this, very usefull, but i have a problem, i have ESP8266 and, in this example you use ledcWrite and others mehods for ESP32 ONLY, you can make a modified version of this proyect to work with ESP8266? plz thanks so much!

@JeahBee66 2 года назад

Unfortunately, I'm a loser at website programming. Would it be possible to get an example with a 2nd page and fields for entering numbers?

@vattuiot8295 10 месяцев назад

thanks you !

@KrisKasprzak 10 месяцев назад

You're welcome!

@harrylenon9594 10 месяцев назад

This has been extremely helpful! Do you know how to do the server.handleclient function without the arduino libraries? im trying to recreate in the esp-IDF and everything but the live update is working so far, but im pretty stumped on how to get that handleclient working EDIT: looks like the esp- idf version doesnt need the server.handleclient function. I believe it must have setup an interrupt that periodically does the same thing that the arduino handleclient function does

@LastChanceNow 7 месяцев назад

Hello! Very good video and it works! If you can explain one question, why is the slider not synchronized on windows and android? The button and switch do this without any problems.

@mohamedgendia4274 Год назад

Thank you very much for that great information... I want to know if i have my own website with domain and i want the webpage to be on my website and to start communicating with the esp . How to do that and how to let the website control different esp's based in something like id code as example for each esp i configure

@stephenreeves4898 Год назад

Great video and very well explained, I've started to study and go through and doing some playing around wit the code to learn and understand HTML coding. I have a question which part of the html code that makes the boxes and color's around the text as I would like to see about removing them to just show plain text or a border box around the text ?

@KrisKasprzak Год назад

the status bar boxes are classes inside the table, the java script controls the color and width. if you set the class properties to some fixed value and remove the java updated code, you should be able to get a border (or nothing) around the text. note HTML + CSS + JAVA script is a real pain to write in.

@yogeshitaliya473 2 года назад

😍😍😍

@diamtakselaluemas8650 Год назад

thanks sir

@KrisKasprzak Год назад

Most welcome

@royhopkins974 Год назад

Hi. Great work. Can you show how to add a graph to this code. Maybe a whole new video 😂

@kworsfold 6 месяцев назад

Hi Kris, just wanted to say that your tutorial is awesome, do you know how this can be used using Captive Portal. Thanks

@KrisKasprzak 6 месяцев назад

Unfortunately not

@nightfall6040 2 месяца назад

Hello Kris, first of all thank you very much for providing such tutorial!, can i ask you where you have learned it? are there any extended courses available?

@KrisKasprzak 2 месяца назад

A couple of basic vids and a bunch of hacking.

@dlouhyjohnny6810 Год назад

Hi,this is honestly so awesome ! i have a question though, if i want to send more precise data to the site, like lets say instead of 2.6 volts i want to send 2.63 volts so its more precise how would i need to change the code ? thanks

@KrisKasprzak Год назад

look at the .ino around line 312, I do some math to get the whole number and the fractional part. I do this because of limited support for formatting floats in Arduino. You will need to adjust the *10 to get more digits.

@mikeonthebox 2 года назад

For something like with WebSockets would be much appropriate than sending requests ever 100 ms

@samiobi 4 месяца назад

Thank you Kris for the excellent work, my question is can i control two esp32 from a single web page, if so can you please elaborate on the required changes on the code , thank you

@KrisKasprzak 4 месяца назад

do you want the same instruction going to both ESP 32s or are you intending the webpage to send different instructions to different32s?

@samiobi 4 месяца назад

the instructions the can go any one esp, for example i can select from the same webpage to switch on led in esp number one or to switch on led in esp number two @@KrisKasprzak

@kevin4119817 2 года назад

Hi Kris, most of the tutorials are done with WiFiServer library, yours has been done with WebServer. I've also read about AsyncWebServer many times and it is pretty confusing. Do you know the differences between these and which one is better in your opinion?

@KrisKasprzak 2 года назад

I'm using a heavily modified example that came with the ESP32 install. A key reason is the "on" method that will listen to incoming traffic and if a keyword is encountered it will fire a function. For example if the web page button is pressed, the java script will send back a "BUTTON_1" keyword, the library i'm using sees that and can process accordingly. I'm not sure if what you are considering can do that--otherwise you will need to write your own code for listening and processing.

2 года назад

better if can read dht + capacitive umidity analog and use 2 relay board

@tdmanson Год назад

Dude I owe you a beer.

@KrisKasprzak Год назад

You’re very welcome, and I hope it’s a really big beer

@serhiifediakov8171 Год назад

dzieki

@KrisKasprzak Год назад

proszę Hopefully that is the correct translation to you’re welcome.

@serhiifediakov8171 4 месяца назад

@@KrisKasprzak oh I though that you've got Polish surname :)

@RafaelSales55 2 месяца назад

HI sir, thank you a lot for the video, I could not found WebServer can I follow the tutorial using esp 8266(nodeMcu)?

@dcollop3543 2 года назад

Hello, can you make a video to setup an EsP32 as a client and node is websocket server

@Bliz0516 Месяц назад

Great video Inwas wondering what supermon does in this?

@KrisKasprzak Месяц назад

It is simply a .h file that lists the HTML and JavaScript code

@musix1581 Год назад

Can you please update/show how to draw the results in a chart?

@rekabuk 6 месяцев назад

Thanks for this, I was able to get my webpage up and running really quickly using this example. One thing I don't understand is what keeps it going? The ESP only sends XML in response to a request from the webpage, so is "process()" called continuously by the webpage java script? How can I slow down the frequency with which the page is updated?

@KrisKasprzak 6 месяцев назад

It’s been a while since I looked at the code, but inside the ESP code there is a handleclient function that pings the server. I think you can slow that down, but you’ll have to adjust the time out inside your webpage.

@rekabuk 6 месяцев назад

@@KrisKasprzak Thanks, as is normally the way, I found the answer a few hours after posting the question. Thanks for the response 🙂

@edinetgrunhed6000 2 месяца назад

this is a kind of video we need for esp323 project,any update for this video with added features

@sridevipindi1547 10 месяцев назад

could u make a video how to do in espressif ide pls

@Tony-cf8re 4 месяца назад

can you please tell me where i can initialise the value on the slider on startup? .. brilliant code btw

@KrisKasprzak 4 месяца назад

change the value property initial value here is 0 (%) This would be 50 (%)

@Tony-cf8re 4 месяца назад

@@KrisKasprzak Many thanks Kris .. Sorry I have not expained it properly . what I am after is this .. On startup the label above the slider does not show the value until the slider is operated . is there a way to update that ? Many thanks for your help .. I am a relative newbie to the web page stuff but find it fascinating

@mathieucaron4957 Год назад

Don't be scared to try web sockets, no need to have a library 👌

@KrisKasprzak Год назад

Do you have an example code? I’m sure my subs would love to see how it’s done.

@Mystical-TEDDY_ Год назад

How can I tell which library to install for the webserver. There's so many of them that have similar names. Or is webserver.h already preinstalled

@KrisKasprzak Год назад

I used the pre-installed one

@user-zi8nw4xf6n 8 месяцев назад

Hello Can we do this type in ESP_IDF . and how ? anyone knows ?

@kamaledirisinghe 6 месяцев назад

Very nice learning. When the web page is opened in two browsers, one browser's changes are not reflected in the other one. Is this normal behavior in this type of approach ?

@KrisKasprzak 6 месяцев назад

Each instance of a web session is independent of others, fortunately. Imagine if changes made by one user were applied to others--meaning as you access your bank data, I can see it.

@isaiahclemons1860 2 года назад

Would you happen to know if this is small to be hosted over a free server hoster like ngrok? I have tried hosting a couple other servers that way over ngrok so I can access it wherever i am as long as I have wifi but I have noticed that in the free tier of ngrok sometimes it is too big. How else would you suggest to access this website without having to be on the same network as the one the board connects to?

@KrisKasprzak 2 года назад

Try port forwarding. I am able to do this on my home Internet system because I have access to the router. Basically you just open access to the world to the ESP32. I’ve done this to mine and been able to connect to this Web server from anywhere. Port forwarding will create some weird IP address what you were used to connect to it

@noweare1 4 месяца назад

@@KrisKasprzak That connection would not be secure though.

@mugi1530 Год назад

Can i make the same project using esp8266?

@geomil7281 Год назад

Hi Kris , excellent done. I have also modified the code in order to automatically work with both ESP32 and ESP8266. Let me know if you are interested to get it. Thanks. /GM

@KrisKasprzak Год назад

Sounds great!

@zettabyte.950 Год назад

Good night, can you send me the code it's for a project

@oussamabenilles5311 2 года назад

Thank you a lot, This projct works just in local network ???

@KrisKasprzak 2 года назад

you can connect to an existing network or create an access point (no internet access though)

@nektarioskoumantakis4987 Год назад

@@KrisKasprzak can you explain this more? How can I control the ESP32 from a different... country? 🙂

@lvanvan Год назад

by default esp32 silently needs minimum 8 charecters wifi password and if you somehow make the pass shorter than 8 the esp32 after flashing keeps rebooting like infinate loop..... Esp32 is full of surprises like this one ... when i was looping fast after flashing with no clue, i hold the reset button and then read the terminal feed ... thats how i learn about the minimum password loenght... by the way i am using ''Espressif IDE'' and windows... i gues mb it is an options in menuconfig for dealing with it ...

@KrisKasprzak Год назад

Yea, I hear ya. Very odd MCU's, another challenge is the dual pin naming GPIO can be different than the board silkscreen.

@lvanvan Год назад

@@KrisKasprzak also thanks for the nice and informative videos that you post. Have a nice day!

@AkashJadhavIT 2 года назад

hello sir, thank you for this tutorial. i am getting started with ESP32. I am doing the project where i want to connect five ESP32 to one ESP32 and then , control all the other 5 ESP's GPIO pins with one using android app.so that i will have to connect only ESP to WIFI and not all. the connections should be 2 way so that main ESP will sent commands as well as get to know the status of others ESP. what do we call this method of connecting? how to achieve this any tutorials or reference materials?

@KrisKasprzak 2 года назад

what connections are you thinking? Wireless or wired?

@AkashJadhavIT 2 года назад

@@KrisKasprzak wireless connection, this setup is for modelling railway, i have five locomotives with esp32, so on my mobile dashboard i want to see all the running trians details so that I can control their speed, control led on off. I do not want to connect each loco esp by IP address and then select it.

@KrisKasprzak 2 года назад

@@AkashJadhavIT I have a similar project where I connect five different MC used to a single ESP32 base. It’s all done wirelessly. Here are some units that may help you out ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-hMjArKGucFA.html There are several ways to do this. You could have all on the same channel with some type of ID there’s unique for each train. Your ESP 32 base could send out signals to Pole and set train data, or you could send data from your trains to your base. Your base can serve a webpage that you could connect with your phone or whatever to monitor each of the trains and set their speed. This is not going to be an easy project

@dr.m.sanaullahsahar9859 2 месяца назад

any possibility to access esp's webpage over the internet?

@KrisKasprzak 2 месяца назад

You can, check out port forwarding on your router

@sarasarsora5385 2 месяца назад

How can i put pictures please?

@sevenvll5955 Год назад

Hello sir 👋 Please I need an urgent help 🥺 So for my project I'm going to connect a load cell , hx711 amplifier to ab esp32 , to mesure thhe weight of gadgets in a storage bin, then send the result in a web page. I want to make a web page like this , can you provide some help

@KrisKasprzak Год назад

Do you have your load still working yet?

@huy_ute4146 Год назад

I want to add a mechanical button to control Led in parallel, how can when the button is pressed, the Led state is also updated to the Web? help meeeeeeeee

@KrisKasprzak Год назад

The code does something similar to this, notice the "Digital Switch" status on the web page. The example shows how to send both an analog read and a digital read. Your MCU will have to be wired (direct if 3v3 or a voltage divider if higher, or other) to be able to read the button press, then see the example for the digital switch on how to send the button state to the web page.

@huy_ute4146 Год назад

@@KrisKasprzak Yes, can you write a sample for me in void loop, please help me, I have tried but not working..hicc help meeeee 😢