#332

[@tonyp4894]

Andreas, I spent over a week trying to get OTA Basic from the Examples to work with my ESP32 Cam. Finally, I gave up and used your OTA template and it worked the first time and every time since. I can't thank you enough for taking the time to help me and those less fortunate in electronics knowledge. You're a HERO. :))

[@AndreasSpiess]

Glad I could help!

[@pcost]

Hello Andreas! I always wait anxiously for new videos from you, no matter the subject, I know that I will learn lots of things! Greetings from Canada! 🙌

[@AndreasSpiess]

During the last weeks you did not have to wait for too long ;-) It must be late in Canada...

[@PranavSharma2504]

Same here! Of all the KZbinrs, @Andreas Spiess is my all-time favorite! A perfect mix of information, experimentation, and humor!

[@georglinde3910]

"It always sits in the in the first row!" - brilliant! :-D

[@PranavSharma2504]

@@nutsandguts2871 Maybe 17 other people (including me) get impressed easily too, then. Edit: 31 now

[@gerdkah6064]

5:44 so OTA is also a subscriber ^v^

[@systemofapwne]

Or you just sort your projects differently and use a better IDE (like MS Visual Studio Code + Platform.io) instead of the limited Arduino IDE. Yet, I like his videos for being "always straight and basic" (which unfortunately implies to also fallback to arduino IDE)

[@WistrelChianti]

@@PranavSharma2504 it was a great joke! (made me laugh anyhow =D)

[@bowiejudah1617]

i guess Im asking randomly but does anyone know a trick to get back into an Instagram account..? I was stupid lost my password. I appreciate any tricks you can offer me!

[@listerdave1240]

Thanks a lot for this tutorial. I had been wanting (and needing) to do OTA for a long time but always wrongly assumed it would be very difficult and had in fact tried a few times without success but after watching your video I got it working in a few minutes in one of my projects.

[@AndreasSpiess]

Glad I could help!

[@VildanAkchurin]

Copying and pasting from sketch example works right away! PuTTY debugging works as a charm. Thank you for the clear explanation and extended OTA debugging.

[@AndreasSpiess]

Glad it helped!

[@PeterAlbronda]

Again a wonderful presentation with much practical information in a short time. Each Sunday morning I am looking forward to your high value information, thank you!

[@AndreasSpiess]

You are welcome! And thank you for your nice words.

[@AndrewDanne]

This is so cool. 1. I am just starting to learn morse code. 2. I am just getting my head around ESZP32 and 8266. 3. I am working on a battery-powered automation controlled relay and am searching for information on very very low power devices (which you have previously covered). I really enjoy your ideas and how you go about explaining them. OTA will really help with all these projects.

[@AndreasSpiess]

If you want to learn morse you have to have a look at my first videos. And if you are interested I have an updated version for the ESP32...

[@teddavis1840]

Grüezi Andreas, thanks for the many hours you devote to your viewers. I appreciate your dry humour very much. I tried to find if you have created any videos on motors and actuators without success. Monitoring & control systems would seem a natural progression to your sensor projects - LoRa especially. Hopp Schwiiz!

[@isilverboy]

I'm seeing and seeing again your videos. They are very useful and help me to speed up my projects. Thank you very much for your work here, really!

[@AndreasSpiess]

Glad you like them! And they help you in saving your valuable time.

[@hygri]

Cool. I'd certainly like to see your take on RTOS, I've been using parts of it in my sketches and it looks incredibly powerful... A video from the guy with the Swiss accent would probably help many of us to get off the ground. Thanks!!

[@AndreasSpiess]

Maybe in the future, as I said...

[@hygri]

@@AndreasSpiess Fingers crossed ;)

[@krishnanov21]

Just when I needed it! Thank you🙌

[@AndreasSpiess]

Perfect!

[@Marc_Miller]

​@@AndreasSpiess I'm having trouble finding your video shown at 6:19 talking about using the FTDI board to read the serial connection. Which video was that in?

[@DaddyBusAdventures]

Danka viel mohl Andreas. I've played around with OTA but the debugging trick I was not aware off. Time to do some testing on my RV project where I have 8266's deployed to handle various tasks in the RV.

[@AndreasSpiess]

I am not sure if everything works the same on the ESP8266. But you can try

[@borishruby7131]

Hello Andreas! I really love your videos and can't wait for another one. I like the way you do it. I didn't know something like this is possible in ESP32 at all! By the way, it works also on ESP8266 as I've just found out. Thanks a lot and keep up the great work! Greetings from Slovakia!

[@leadeddeveloper9575]

Thank you for your video, I like those ESP videos so much. Also, I'm planning to use ESP in my new project on my channel. It is a very exciting controller!

[@AndreasSpiess]

Go for it!

[@jeffbornes3986]

I love the way that you did this... You made this so user friendly THANK YOU.

[@AndreasSpiess]

You're welcome!

[@santopino2546]

Excellent, finally something that I will surely personally use. Thank you.

[@AndreasSpiess]

Glad it was helpful!

[@bombenlps7950]

Thank you so much, i was just thinking of a way to upload code onto a smart bulb in the future without having to resolder all the connections. But i didnt know about OTA, you are a life saver. Thank you!

[@AndreasSpiess]

Glad it helped!

[@Thorathome]

This tutorial got me quickly onto OTA for my ESP8266 & 32s, thanks. Your helpful piece of #include code makes OTA smooth for both 8266 and ESP32s. I especially like the RTOS ESP32 twist. It works. Onward to TelNet for debugging OTA and to see how this all works with Blynk, which I use all the time. Thanks, Andreas. Much appreciated.

[@AndreasSpiess]

You're welcome!

[@Thorathome]

@@AndreasSpiess This quickstart into OTA is fabulous. Your code made it easy to get my Blynk-enabled ESP32s and 8266s updating OTA with little/no problems. All very quickly, thank you. (Change the 7 to an 8 in OTA.h line 23, and it's PERFECT!) Good intro to TelNet and PuTTY as well. So simple with your guidance. Thank you once again. Most helpful.

[@tonysfun]

Just in nick of time for me Andreas! Thanks for several tips that will make our lives easier! You are just a machine that keeps going and going further than the battery commercial!

[@AndreasSpiess]

I just have a schedule ;-) And you never know how long you live in my age...

[@tonysfun]

@@AndreasSpiess I agree! I'm not the youngest either, but I have plans too.... I just admire you and the amount of work you can do!!! Wishing you health - the rest can be purchased.

[@robertnickels1527]

Thank you for this great tutorial, subscribed immediately - although I suspect it's getting crowded in the first row! I have Telnet remote debugging working on the ESP-01, all that's needed is to add "#include TelnetStream" and add "TelnetStream.begin();" in Setup. And I've only been playing with ESP-01 for a few days ;-)

[@AndreasSpiess]

Welcome aboard of the channel!

[@mattmanandeddie]

Oh Thank You! I never knew you could debug over WiFi, that will make things easier. I've done an OTA update before where I forgot to add OTA code block to new sketch. I did a Face Palm, back when you could touch your face. :) Can't wait to see more on the long range 2.4Ghz radio.

[@AndreasSpiess]

If you refer to the satellite project I assume I will continue this or next week.

[@wess7390]

Thanks!

[@AndreasSpiess]

Thank you for your support!

[@DanielLopez-kt1xt]

And just by the work of your magic, i can program my esp32 ota... thank you very much! Your videos couldn't be easier to understand. This capability is perfect for an mqtt smart house.

[@AndreasSpiess]

Glad it worked!

[@davidhudd5777]

Thanks

[@AndreasSpiess]

Thank you for your support!

[@WacKEDmaN]

funny that.. i was just setting up OTA on my ESP8266!... Great minds think alike!! :P nice info..as usual..Thanks Andreas :)

[@AndreasSpiess]

My pleasure!

[@Retrocomputernerd]

@@AndreasSpiess This is awesome, will the example sketch work with an ESP8266 though? The video indicated it would need someone to contribute a compatible version. I am still working through how to include the #include libraries

[@WacKEDmaN]

@@Retrocomputernerd try this one i setup after watching.... i was using a version already in ESP_AsyncFSBrowser.. i just added esp8266s needed libs wrapped in #ifdef. the ArduinoOTA calls would complain during compile on esp8266 so i fixed them too.. github.com/WacKEDmaN/ESP32-OTA/blob/master/0TA_Template_Sketch/OTA.h

[@stonecoldcnc]

@@WacKEDmaN Thanks for that, seems to work fine on the Wemos D1 board but not on the ESP-07, [ERROR]: Bad Answer: ERR: ERROR[4]: Not Enough Space

[@WacKEDmaN]

@@stonecoldcnc make sure the partitions are set correct... im also guessing the low flash memory ESP (eg 512k/1Mb) chips wont be able to support OTA

[@michaeldreher1372]

You really nail it down in 10 minutes, that's great

[@AndreasSpiess]

Thank you!

[@massimomalesci352]

Great video, Andreas, and very well explained!!!! Greetings from Italy! And I always sit in the first row!!!

[@AndreasSpiess]

Thank you!

[@kallereunanen1575]

This video was useful! Thanks a lot for a very dense set of excellent tips!

[@AndreasSpiess]

Glad you can use it!

[@paulrichard8912]

Always enjoy your tutorials and your github contributions. Thanks for the time and effort you put into these.

[@AndreasSpiess]

My pleasure!

[@Zalo29]

Good tricks Andreas. Creating a mock-up sketch with OTA&credentials , so smart I've been using remoteDebug to get a serial port when deployed, but recently I've got some troubles with websockets. I'll try your telnet suggestion. Thank you so much! BTW, I encourage you to dig into FreeRTOS as it gives you a lot more possibilities to manage many tasks concurrently

[@AndreasSpiess]

I also had problems with other remote debugging libraries together with OTA. This one worked.

[@ClementsProjects]

Thanks Andreas for the explainations. I worked with this beast during the last weeks and you complete informations i needed. Thank you !

[@AndreasSpiess]

Glad it helped!

[@ivanlogghe90]

Very helpful tutorial! This opens so many "ports" ;-) for new projects !!

[@AndreasSpiess]

Thank you!

[@gaanpagla8417]

Brilliant video. Now I don't have to find my data cable which has a tendency to disappear whenever I need it . Thanks so much !

[@AndreasSpiess]

And you even do not have to find your ESP as long as it has Wi-Fi connection ;-)

[@peerappel2012]

Thanks very much! More information about RTOS would be great imo. Also cant the otahandle function be called every once in a while by a timer interrupt? Especially as it doesnt take to much time anyways.

[@AndreasSpiess]

Try it, maybe it will work. I do would not like this structure.

[@michaeldreher1372]

​@@AndreasSpiess Use another thread, not an interrupt.

[@AndreasSpiess]

Another task did not work :-(

[@michaeldreher1372]

​@Andreas Spiess : I tried it and also and had some problems, but I was able to fix them: 1. I had to reduce the sleep time between the calls to 5ms (10ms is too long) 2. I had to increase the stack size to at least 1900 byte, (1800 byte is not enough) call this in setup(): TaskHandle_t xOTATaskHandle = NULL; xTaskCreate( vOTATaskCode, "OTA", 2048, NULL, 1, &xOTATaskHandle); define the task function and remove the 'ArduinoOTA.handle()' call from loop(): void vOTATaskCode( void * pvParameters ) { for(;;) { sleep(5); ArduinoOTA.handle(); } }

[@WistrelChianti]

@@michaeldreher1372 @Andreas Spiess I've managed to get this working slightly differently to Michael but had to change a few things. Mind if I send a pull request with the updates? (I'll have to do them in a tidy way first, currently code is full of debug prints)

[@OldCurmudgeon3DP]

Very useful video, sir. I'm happy to see more code taking advantage of the ESP32. Dev boards are close enough to the 8266 in price that it's worth using the 32s even for simple projects. The extra uart is nice for Nextion screens. ITead just needs to rework their editor to be a little more user friendly.

[@AndreasSpiess]

The ESP32 has many advantages. So there is no real benefit in investing into ESP8266.

[@jstro-hobbytech]

This is a great video. Best explanation on how to do it. I know I'm a little late but credit where credit is due. I use the wemos d1 and have never had to reset after an ota update. My only complaint is that espressif should've released a more powerful board by now. They're the best other than a pi zero or whatever the new wifi mini pi is called. Anything pi related in Canada that isn't a Pico is at least 115 dollars where as an esp32 is about 20 now. More program memory and a faster cpu like the teensy has been doing for years but the teensy is 60cad.

[@AndreasSpiess]

I most of the time use the ESP32 which is much stronger than the ESP8266 and not much more expensive...

[@jstro-hobbytech]

@@AndreasSpiess the chip shortage has affected esp32 modules. Where you used to get 5 for 30 dollars, 2 for 30 is the going rate while the 8266 is now 5 for 50. It's made me realize (which is somewhat contradictory to what I said previously) the 8266 can do alot of the same things I need without any appreciable notice in lag for some of the devices I make. They're nothing special, just iot devices that do simple things usually lighting related. Haha. I've been doing alot more circuit stuff recently, like learning more about passive component along with digital logic ics, respectively. I have more of a software background than hardware and I find that more interesting learning wise.

[@stupossibleify]

Thanks Andreas, your chosen topics are always interesting and very relevant. OTA is simpler than I thought. By the way, at the start of your videos are you saying "Greeting KZbinrs" or "Pretty KZbinrs"? Either is fine 😁

[@nkronert]

He says "Grüezi KZbinrs", which is Swiss for "Hello KZbinrs" :-)

[@stupossibleify]

@@nkronert thank you!

[@WistrelChianti]

haha I always wondered too :D now I know :D

[@mr.anonymous298]

I always learn something new or interesting from your great videos! Thank you very much.

[@AndreasSpiess]

Glad to hear that!

[@ronproveniers3655]

Nice, i can use this for the solar weatherstation ( with bme280 and pms50003) which i develop now One Question: how can we OTA the esp32 when we use deepsleep? Yes, RTOS is also very interesting subject , special when to use or not to use? Maybe just use a scheduler?? Maybe you should explain about lockups and not putting watchdog triggers in a seperate task! Thanks for your good work Ron

[@DO7DH]

You could add a switch to manually switch off deepsleep mode, if you have access to the weather station. Otherwise configure 15 min. each day for flashing e.g. 12:00 to 12:15.

[@ronproveniers3655]

DO7H, good suggestion. It makes the program a bit more complicated, need exact time and have no internet connection? The idea is that weatherunit hangs somewhere remote at a pole.

[@bobpaydar]

thanks for your all’s videos you provided to us, very helpful for me and thank again 👍🏻

[@AndreasSpiess]

Glad to hear that!

[@saeedkizzy]

thanks for sharing.RTOS is a great tool in such systems.can't wait to see more about that :)

[@AndreasSpiess]

Maybe...

[@kevinfine9303]

Hi Andreas, very useful video, as always. You've helped me a lot with my projects! I wanted to mention a correction to your description of OTA. It appears that the ESP32 maintains two areas of memory, OTA1 and OTA2. The Esspressif OTA mechanism always loads the new firmware in the unused portion, and, if successful, switches over the boot pointer to the new area of memory. Thus the previous firmware is not written over as implied in the video, and is available for a rollback. This from docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/ota.html Again, thanks for all your help, and also, Grüezi from Yverdon!

[@AndreasSpiess]

You are right. Because it happens on the background I did not want to make it more complicated than necessary.

[@raguaviva]

I know it is Sunday when I see a new video From Andreas! So good!

[@AndreasSpiess]

:-)

[@Taran72]

Wow! I had no idea it was possibile to update the Arduino this way. Thank you for getting us know.

[@AndreasSpiess]

It is not for the Arduino, it is for the Esp32

[@Taran72]

@@AndreasSpiess , ohhhhh...ok. got it as you can see I'm not familiar with the different processors. :) thank you for the clarification.

[@arifindobson]

I am proud to say that I am enrolling in an IoT program from ASIT (Andreas-Spiess-Institute-of-Technology). and "ASIT" in the first row. Love it, awesome as always~

[@AndreasSpiess]

Glad you think so! ASIT - I love it!

[@arifindobson]

@@AndreasSpiess Thank you prof :D

[@starlingwatch3921]

Greutzi Andreas, I'm back in Zürich 18 Aug to 21, part of my older son's wedding. I'm even planning to do the Limmat swim! I hope you are having a great holiday. Thanks for this video. I am writing a BLE-based logger for ESP32 devices and will post it to the Reflections repository on Github in the coming weeks. It will support multiple devices logging to what looks like local Serial, and a central logger will display the logs. It will also work over an Internet connection to a central log server. If you already have seen something like this please let me know, so I don't waste my time re-inventing the wheel. -Frank

[@AndreasSpiess]

There are loggers like github.com/jandrassy/TelnetStream (I even made a video about it, if I remember right). But all go via WiFi. I wish you a pleasant stay in Switzerland and hope the weather will be fine for the wedding! At the moment, we have quite a lot of rain (which is suitable for nature, of course).

[@starlingwatch3921]

@@AndreasSpiess merci!

[@toddpichler8578]

Hello Andreas, Thank you for another great example. I finally got it working but I struggled a bit because I decided to use VSCode and PlatformIO (one of your other awesome videos). The part that stumped me was the way PlatformIO automatically selects the upload connection. Normally that is a good thing but I wanted to test the OTA connection. It turns out I needed to add a line to the platform.ini file like this "upload_port = " where "" is the value printed to the serial monitor. Maybe that will help someone else. Thanks again!

[@AndreasSpiess]

There were a few other comments about the same fact. So you are not the only ;-)

[@HimalayanPathik]

Thank you so much for this awesome tute. I am now able to solve my year-old problem. Very accurate and informative tutorial. God bless you.

[@AndreasSpiess]

Glad it helped!

[@DerTou]

Thank you, I have learned a lot of useful things from your videos. Looking forward to more ESP32 content :)

[@AndreasSpiess]

More to come!

[@sergeykorzukhin2132]

So it is time for some refactoring in my projects :) Thank you Andreas!

[@AndreasSpiess]

You are welcome!

[@EXMattix]

Thanks for all of your videos, you are going to be my favorite youtuber about microcontroller. But I recommended that if you call another video for more details, you could link in a box that video in the video. Thanks anyways for the good stuff.

[@AndreasSpiess]

You are welcome! Usually I place a card in the upper right corner if I mention another video.But maybe I forgot one or the other :-(

[@EXMattix]

@@AndreasSpiess yeah, maybe there is a issue with cards, but it's easy to find the video because of the numbering of your videos.

[@santorcuato]

Useful and necessary if you have sensors not on your workshop table but somewhere in the roof...

[@AndreasSpiess]

Exactly!

[@electronic7979]

It was a video with useful information. I liked it

[@AndreasSpiess]

Glad to hear that

[@PranavSharma2504]

Hey The Guy With The Swiss Accent! It would be great to expand the template sketch to incorporate Access Point and Captive Portal for setting the credentials, instead of hardcoding them. Then they will survive network changes too! On the side, would you like to take a look at Rust for ESP32? It seems to be gaining some traction and aims to be a production-focused language.

[@AndreasSpiess]

As I said: WiFiManager does that, if you need it

[@PranavSharma2504]

@@AndreasSpiess ooh! I didn't notice wifimanager was already in place 😅

[@DDBerlin]

Andreas, thanksfor the video. I'm sure you already know, but just for the records: OTA also works absolutelyflawless with ESP8266

[@AndreasSpiess]

You are right.

[@erwinkooi6669]

Hi Andreas, great video as always! Do you know if this is also possible with VS Code and platformio? I completely switched over from the Arduino ide (which is great for starters, but not so much when you have large and diverse projects.

[@AndreasSpiess]

I think it is possible, too

[@MasseyLee]

@@AndreasSpiess Did you stop using PlatformIO and go back to Arduino IDE ?

[@MennoLauwerens]

Yes, it also works from platformIO. I use it all the time.

[@ulwur]

@@MennoLauwerens do you mind showing or explaining how you did the template stuff and how to do the wireless uploading?

[@MennoLauwerens]

@@ulwur Just set these options in platformio.ini: board_build.partitions = min_spiffs.csv ; See:github.com/espressif/arduino-esp32/tree/master/tools/partitions ;upload_port = COM5 upload_protocol = espota upload_port = 192.168.0.35 ; IP of the ESP32 The rest is identical to this video.

[@Jungmin_Seo]

wow.. The code works flawlessly. Thanks!

[@AndreasSpiess]

You're welcome!

[@patrickm9953]

You made it very easy. Great tutorial

[@AndreasSpiess]

Glad to hear that!

[@dogastus]

Another excellent and useful video - thank you!

[@AndreasSpiess]

Glad you enjoyed it!

[@alanesq1]

I have been very impressed using the OTA option to upload the bin file from a web browser rather than via the Arduino IDE. This is very handy if you have created a ESP project for someone else as you can send them the bin file and they can update it themselves. You can see how I use it here: github.com/alanesq/BasicWebserver

[@Retrocomputernerd]

this also looks like a very cools solution, however Arduino IDE is rejecting the library zip file, even after renaming the subfolder. Any advise, or a tutorial link?

[@alanesq1]

​@@Retrocomputernerd Hi, You need to manually unzip the file and copy the files to your arduino library folder. BTW - I have just noticed I give the wrong password in the instructions, it should be 12345678 I have just uploaded a newer version of the sketch which asks for a password to access OTA (Not very secure but a lot better than nothing)

[@AndreasSpiess]

@alanesq: This is where IOTappstory began...

[@SandeepSolankis]

Thanks for sharing. You resolve my broken microUSB problem. Appreciate it. One quick question - Why don't you make videos of development using ESP-IDF because i believe that building a production ready is more safer in esp-idf than arduino. Please comment.

[@AndreasSpiess]

Because only a few people use theeIDF and my channel would crash...

[@meinsda5983]

Great Work Andreas! What would we do without you ;)

[@AndreasSpiess]

Just drink a Sunday beer in a sunny Beergarden ? ;-)

[@meinsda5983]

@@AndreasSpiess Yes! I hope if you stay next time in vienna we have time together to do this and talking about technical news...

[@drmocm]

Very interesting. I also have a trick for when you use a battery driven device that sleeps a lot, e.g. a sensor like the bme680. In that case loop is never reached and the device goes to sleep very fast. So, I use a loop in the setup that looks for the bme680 and in that loop I add the OTA handle. All I have to do is disconnect the sensor and the device keeps looping and I can connect via OTA. You could use a switch or button to disconnect the sensor.

[@AndreasSpiess]

Great tip! Thanks!

[@andreaswinter1400]

Great stuff, as always. But one little remark: Usually you don't put any executable code into .h files. In almost all cases they only contain types, macros, defines, and function prototypes. But I'm not so familiar with the Arduino IDE so maybe this is the only way to split code into several files.

[@AndreasSpiess]

I also do not know. I assume you can give it another name if you want ;-)

[@JustinShaedo]

(a bit late but...) .h files are headers eg for storing constant variables. .cpp are used for declarations (functions, classes, etc) This is just convention and 99% of the time the compiler won't care what you use BUT might add well do it 'properly'.

[@JulioSalim]

Andreas, you are "The Man". Thanks!

[@avieleliyahu6199]

Thank you, an educational and fun video as usual 😄

[@AndreasSpiess]

Glad you enjoyed it!

[@AJMansfield1]

Instead of putting `ArduinoOTA.handle()` in your main loop, you should be able to set up an independant timer interrupt and have it run from there, as extra insurance in case `loop` (or for that matter, the rest of `setup`) crashes or delays or gets stuck in some way. edit: Actually you do address this briefly with your comment about setting up an RTOS task, which is probably a "more proper" way to do it than a raw interrupt.

[@ZookeeperJohnG]

Super helpful, thank you!🥸

[@AndreasSpiess]

You are welcome!

[@Beatfreak19831]

A great and useful video! Thanks Andreas!

[@AndreasSpiess]

My pleasure!

[@JBoek30]

Wow vielen Dank ! nice Erweiterung/Erleichterung Klasse Zusammenstellung ! klappt auf anhieb : 7

[@AndreasSpiess]

Sollte eigentlich ;-) Vielen Dank für's Feedback.

[@caiopedreira6643]

Hello Professor Spiess: How about using MQTT, CoAP or even raw UDP instead of Telnet, so we can debug anywhere on the world? It would be nice to see a video of you comparing the performance and latency between TCP and UDP debugging to some broker or even a remote CoAP server. It will be great for those people who don't want to do port forwarding on their routers to access the Telnet server over the Internet. Congratulations for your great master classes! Best Regards!

[@AndreasSpiess]

I am no network specialist. So somebody else has to do that :-(

[@VladimirErmakov]

Also small note about upload: image was uploaded to one of two partitions (free one), then if all ok and md5 match, bootloader would be told to switch to use that partition. So nothing to memmove. (i may be not accurate, digging into the code a few years ago to check what's wrong with http ota, and i don't know what is used for SPIFFS, because i only use it to store config.json).

[@AndreasSpiess]

I think you are right.

[@temyraverdana6421]

Mr. Andreas thanks, this video is amazing! Thanks!

[@AndreasSpiess]

You are welcome!

[@Thorathome]

Thanks, Andreas. Just the two hints on creating your own sketch templates and #include "MY_WIFI_CREDENTIALS.h" made my day. Brilliant time-savers.

[@AndreasSpiess]

Glad it helped!

[@VladimirErmakov]

Actually there are two versions of OTA: 1. Arduino OTA, where initiator is Arduino IDE, so you should be in the same network; 2. HTTP OTA, where you have to code trigger, but then device downloads image from http server (may be served as a static file, but better to use something that adds checksum headers, like mine esp-ota-server). That method used by Tasmota and TasmoAdmin to update devices.

[@AndreasSpiess]

I did not cover webOTA, because, if you need that, it is better to use IOTappstoy.com.

[@WistrelChianti]

ah good to know this is there. I was wondering if there would be a way to dump an update somewhere online and have the board check/fetch from time to time. Will have a look. (although will maybe check Andreas' IOTappstory.com as an option)

[@WistrelChianti]

feels like stage 2 though. Stage 1 is definitely just "avoidance of USB" for initial development work (as I'm getting close to "burying" the board)

[@JohnJCouture]

Andreas, great job! Works like a charm. is there a way to SET the upload IP address? The IPAddress command doesn't seem to work. I suspect it has to do with the placement of the IPAddress command?

[@AndreasSpiess]

The IP address is usually given by your network.

[@B4x4]

Thank you for another great episode. Please make the RTOS episode.

[@AndreasSpiess]

We will see...

This video already helped me at 2:50... i never thought there are different partitioning schemes on ESP32s, since i had only 4 option in that menu by using a Lolin32 option. I am writing thing with lots of libraries and i run out of space. I will try these, i think it will help already.

[@AndreasSpiess]

Available partitions depend on the board you select.

[@chahilpatel2993]

Perfect Timing 👌

[@AndreasSpiess]

Glad you think so!

[@johnpricejoseca1705]

Hi Andreas, thanks for another great video. I was wondering: Would the ArduinoOTA.handle() call be a candidate to live in an RTOS Task? -- This way, you might not need to scatter calls to it all over the code. Thoughts? Thanks again.

[@AndreasSpiess]

You are right. Maybe you watch my RTOS video. There I place it in the loop(task)

[@johnpricejoseca1705]

@@AndreasSpiess you are ahead of me! :)

[@Павел-ж1щ7л]

Thanks for tutorial! Also one note - better to disable all interrupts right in begining of on ArduinoOTA.onStart function. As I see on my sketch with Ticker library - OTA not likes if someone interrupts it while transmission ) So I called .detach commands in begining of OTA.onStart

[@AndreasSpiess]

If you do not attach interrupts it should not be a problem, I assume. But disabling them is for sure not wrong.

[@harrytsang1501]

The use of delay() inside a task will cause busy waititng and makes your system less real-time. The task will not yield to lower priority tasks so vTaskDelay() is preferred over delay(). However, your time will delay in increments of 15 ms so you may want to also use millis() to make it tighter

[@AndreasSpiess]

You are right. I read somewhere that delay() is replaced with vTaskDelay() by the compiler (which would make sense). All my tests with RTOS showed that the ESP32 is way too fast for all tasks I created and had to wait most of the time anyway.

[@katers5319]

Just 2 suggestions for improvement: 1- incorporate the ArduinoOTA.setHostname() call into the setupOTA() function (which has then to be called with a hostname parameter), 2- append the lower 3 bytes of the MAC address to the OTA hostname. This will help identifying devices if you happen to have more than one device running the same sketch in your network.

[@AndreasSpiess]

Good ideas. Maybe you create a pull request?

[@katers5319]

@@AndreasSpiess Here you go… :-)

[@muriloteixeira4430]

Thanks Andreas for not only being succinct, organized and creating very useful content. You are also fun and your videos are pleasurable. Now in addition to being a channel subscriber, I’ll put a zero at the beginning of my youtube username lol

[@AndreasSpiess]

Good practice if you want to be first!

[@necrodrucifver]

I am going to experiment setting the handler on the setup, expecting been able to upload code only when the bard is rebooted, thank you! Very nice videos, please consider a video to code read protection on esp32

[@AndreasSpiess]

As I like open source I have no need for code protection ;-)

[@foskolo]

Grüezi Andreas, great video again! The sketches I dowloaded from your link are quite different from them of the video ("#define ESP32_RTOS " at the begin of the "0TA_Template_Sketch" for example ). Can I use them without changes with an ESP32 (except SSID and password of course)? Thank you!

[@AndreasSpiess]

I do not remember the details. I would just try it ;-)

[@avejst]

Great walkthrough 👍 Thanks for sharing 👍😀

[@AndreasSpiess]

Thanks for the visit

[@ruudvanderheijden6019]

Love all your videos and your accent! when an update is loaded via OTA, it is loaded into memory. Does that mean that the size of the code can not exceed half the size of the memory?

[@AndreasSpiess]

Yes. But the ESP32 fortunately has a ton of memory...

[@souzamce]

Always very good classes

[@AndreasSpiess]

Thank you! 😃

[@djayers]

Very helpful, thanks Andreas.

[@AndreasSpiess]

You are welcome.

[@collinsabraham8590]

Hello Andreas, thanks a lot for the tutorial, I am new to microcontrollers and I have a little question. Please is it possible to link the Esp32 to the python IDE over the air just as you've done, but in a way that it sends data from a sensor, directly to the IDE so that I can manipulate the data with other blocks of code within the IDE?

[@AndreasSpiess]

You can use MicroPython with the ESP32.

[@vivekchauhan7468]

As always great video...

[@AndreasSpiess]

Thank you!

[@McTroyd]

And here I was, wondering if something like a watchdog timer could be used to call the OTA handler. You beat me to it; I forgot about the RTOS aspect of the ESP32. It seems natural to run that as its own periodic task. I'd be worried about copying the call throughout my code -- later wonder "What's this doing here?" and delete it, in the name of "optimizing." 😁

[@AndreasSpiess]

If you always use the same template to start with, the chance that you delete it is small ;-)

[@McTroyd]

@@AndreasSpiess But that requires too much thinking ahead!! I'm American, I'm not supposed to make sense. 😉

[@PetRatty]

yes setting up ArduinoOTA.handle(); on core 0 is pretty simple, you then need nothing in loop, same goes for the basic udp example, use netcat for the debugger as it doesn't disconnect like putty, minicom is another but haven't tried it

[@AndreasSpiess]

I have tried it and it crashed. On both cores :-(

[@blunoz2907]

Great video as always. What do you think about offloading the OTA functionality to the second core? Might keep the main sketch cleaner. Also I’ve struggled to get remote debug working with Platform IO. Would love you to delve into this in a future video.

[@AndreasSpiess]

1. I see no advantage to "offload" 41 microseconds to another core. Maybe in another process would be a possibility. 2. I will not cover platformIO on this channel other than teasers. Most of my viewers are on Arduino IDE

[@graffygerry]

You could use a timer interrupt to execute the OTA handler

[@AndreasSpiess]

You can try it. I will not do it.

[@wjhoogervorst]

Thanks, just what I needed. With my ESP8266 I use ESP8266HTTPUpdateServer, but on my ESP32 I could not get the ESP32 version of this functionality working properly. Now I will switch to this way of OTA update, until I get the Webupdate working.

[@AndreasSpiess]

Good plan!

[@sblantipodi]

Wonderful videos, as always

[@AndreasSpiess]

Glad you like them!

[@javierpelaez1]

Good job as always!! I would like you to record a video about OTA using SIM800 + Atmega328. Probably using a flash chip as Moteino guys use for LoRa upgrade firmware OTA.

[@AndreasSpiess]

This topic is way too special for this channel :-(

[@javierpelaez1]

@@AndreasSpiess ok, I could understand. I mean update an Arduino device firmware via gprs chip. Maybe an example doing from fttp and a esp32 chip could be other possibility. Anyway, thanks for your videos and channel!!

[@WistrelChianti]

Hi Andreas, I was just having a wang through your code, and noticed it looks like you found out something special about RTOS. Can I just check to be sure, it looks like you've somehow found a way to hand over the task of running the handle() function to RTOS, meaning it is no longer a requirement to actively run it in our own code. Is this correct? Would be great if you could say a few words on RTOS (if you didn't already). I'm guessing it is something "underneath" that has it's own thread and you can farm out (small/fast?) tasks to it. Thanks again for this work and your wonderful channel.

[@AndreasSpiess]

This is a quite old video and I do not remember the details. I wanted once do a little more with RTOS. But so far it never reached the top of the list.

[@WistrelChianti]

@@AndreasSpiess No worries I figured it out any how and will sort some changes to to the code on github and send a pull in due course

[@WistrelChianti]

@@AndreasSpiess Hello again, all sorted. And I was able to get the TelnetStream bug fixed with help from the library author (well he fixed it, I just told him about it :D). Pull request is here github.com/SensorsIot/ESP32-OTA/pull/13