#32 Internet of Things with ESP8266 #4: Upload Programs Over the Air (OTA) 

I really enjoy your videos. Very clear and straight forward. You have helped me with my IoT experiments a lot.

This is the clearest set of instructions for OTA, Sunday morning project, here we go. Many thanks Andreas

Thank you for these episodes about the ESP8266 and IoT, didn't know the OTA was possible, very cool! Received my NodeMCU today BTW, so can finally start playing with it.

Ah, I was wondering how to do it. You served solution with the best possible way. Thank you again for preparing all videos.

I've been working through the night and as you say there are 2 different versions. I do believe I'm getting closer to resolving this and appreciate your early morning message. I will post up what I find, with your permission. Once again many thanks for replying. Have a good day at work

Please note that you do not *need* another serial software (putty or equivalent) to receive serial debug information while flashing via OTA. The way I do is start a new instance of the Arduino IDE (by clicking on its icon a second time - not by using the "File > Open" which just opens a new sketch in the same instance) and set the port of this second instance to the traditional serial port.

Hey i just recently found this video too. I must say this is awesome to see i love Ota stuff helps me a lot now i see the Esp has OTA I'm happy :)

Why cant the OTA part be implamented into the boot loader of the arduino again? is it already fixed?

Thank you.This info is very useful.

Andreas, although I subscribe to your channel, I have missed this episode somehow. Great content as usual! I'll have to try OTA. How reliable is it now?

Hi Andreas, Great video, you gave me a good understanding about OTA. I was looking forward to update my ESP8266 over the internet remotely from a location far away from where my ESP8266 module is installed. Can you share some ideas about it? I'm kind of stuck. Thank You!

Hi Andreas! Good video, congratulations! I would like to ask you if there is a way to do the same but over the internet. I will appreciate your response. Thanks for sharing all your knowledge with us!

When I upload the bootloader code to the esp12e, I dont find my device in the port section. I restart the IDE and I added arduino to the softwares allowed in the firewall but I still get nothing. Any help please?

hello, i am new to use node mcu. i am trying to write interrupt handler to receive data through uart. when node mcu receives any data on uart it shud go in the interrupt handler. please help me out with this. thanks in advance.

Are there new information for the esp8266-01 module? I often use them and it would be much easier to flash them ota.

Hi! I have an ESP32. I'm using the library httpUpdate for OTA Updates. What is the difference between httpUpdate and ArduinoOTA? Thanks

so cool! nice

Hi Andrea, #1 Just for my understanding : where is stored the OTA info in the ESP memory and how does it work (roughly) ? I am asking you so because I can understand that OTA still works quite well as long as the ESP is within reach of the router it has ***INITIALLY*** signed and connected to (by ways of 'ESP_BasicOTA.ino') ... but what happens if I switch to another router and still want to OTA my ESP ? Do I have to run once again the 'ESP_BasicOTA.ino' with the new credentials to force the ESP to memorize these in its memory ? #2 Just a (kinda) cosmetic question : how comes that, after a ***successful*** OTA upload, the IDE bottom window displays 2 error lines like below : Uploading ............................................................... 19:17:29 [ERROR]: No Result! 19:17:29 [ERROR]: No Result! Have you seen these error messages on your side and if so, do I really have to worry about it (I confirm again that the uploading ended successfully) ? Thanks again for your work.

Danke für all die Tipps und Links. Hast Du dazu eine "gesammelte Werke" (= Blog / Google Doc / o.ä.) mit allen Perlen?

Hi Andreas I have been working on the OTA project and run into a few issues. 1. I am unable to find DNS_SD_Arduino_OTA.ino, I have searched ,I can loacte ESP8266mDNS holding 2 files: mDNS_Web_Server & OTA_mDNS_SPIFFS. Searching the internet, I am only able to find information on OTATest.ino. 2. Also where do I find out a reference for what the functions do? 3. When are you anticipating releasing your "looking further into the programming of OTA" Thank you kind sir

Hello, I am using Arduino IDE 1.6.8 and esp8266 board version 2.3.0, but under File->Example->ESP8266mDNS I do not find your OTA example? Do you know why? Thanks!

Hi Andreas, Thanks for your contribution clarifying how OTA works on the ESP8266 board. I have successfully implemented OTA to my ESP12E/ESP8266 board and my OTA uploads work quite right ! I still have an issue, though. I understand that the serial monitor can NOT work over the air on the same port that the one that has been used for OTA (well, ESP8266 is not supported this way within the Arduino/IDE). However, monitoring my program is mandatory for me and I would like to be able to monitor it via Wifi when it runs. I saw in your video that you're using Putty to monitor it on COM13 ! How did you manage to establish a link between COMxx and the WiFi connection to the ESP (192.168.100.xx in my case) I have tried many other options to no avail (Telnet, SSH ...) Thanks

Can i do the OTA from anywhere in the world? For Ex :Programmer in US and ESP8266 or node MCU in INDIA.IS it possible with the above

How fast esp8266 to transfer packets? In mbps.. upload speed. Thanks

Very nice explained indeed. I use the python script that arduino uses to upload via OTA and now I can update my esp via R-Pi. There is a bit problem I have more then 100 ESPs connected to about 10 R-Pi and I am restricted to use DHCP, so every time when I update ESPs I need their IP address to do this. One solution that I came up with is to write an script to do that. Is there any way to make it possible at the ESP end? Instead of uploading the firmware by script can we just download the bin file directly to the flash in ESP, whenever I put the new bin file in particular directory? that would make ESPs self up-gradable whenever new firmware change is made in binary file.

Could ssh replace serial capabilities?

I had problem with the Wifi port not showing even if I restart my Arduino IDE. Solution: 1. make sure your PC is on same wifi network as on which you configured your boot loader program. 2. if still doesn't works, go to preference > Network and turn off proxy , restart IDE. 3. if still doesn't works, make sure your Wifi network is not blocking some contents from Firewall (usually happens in Universities or restricted Wifi networks)

Andreas can you make a video how to give arduino wifi access (esp8266) ?

Hi Andreas, How could I preform an OTA update without having to press the buttons?

Hallo Andreas, ich habe vor kurzem angefangen mich mit den ESP8266 Teilen zu beschäftigen und bin dadurch auch auf Deinen Kanal gestoßen. Hat mir sehr geholfen. Bei OTA hänge ich jetzt aber und ich hoffe Du kannst mir helfen. Ich habe 2 unterschiedliche ESP8266 Module gekauft, um mal zu testen, was mir am meisten zu sagt. Eines ist ESP8266-F mitz 4M flash ohne USB Anschluss und eines ist das NodeMcu Lua ESP-12E WIFI Development Board. Bei letzterem funktioniert alles wunderbar. Beim ersten kann ich zwar per FTDI Adapter die Software flashen, aber per OTA klappt nichts. Irgendwie kann keine Verbindung aufgebaut werden, obwohl das ESP8266 im WIFI angemeldet ist. Ich kann sogar per MQTT die interne LED ein und aus schalten. Nur OTA funktioniert halt nicht, obwohl ich das gleiche script drauf habe, wie beim Development Board. Woran könnte das liegen? Vielleicht hast Du eine Idee. Würde mich freuen. 73 de OE4HDS

Hello sir, I am following your videos and so far, i have re-achieved most of them. You are really good mentor for the humanity of course!. I do my master thesis, this year. Last semester i have graduated and my thesis about " Smart Home Automation on Esp8266 Wireless Sensors ". This year i am developing that project and i stuck at OTA problem, which causes " wdt reset " and requeries manuel reset. Sadly, as result i couldn't find any solution. Can you show me a way, please?

Hi - for #32 OTA - you didn't explain very well how you got serial commands from Arduino code to be displayed in Arduino IDE using PuTTY. Can you explain in more detail step by step.

Hello Kind peoples i'm trying OTA programming on CC2538 SOC. initially i referred Z-stack in "IAR EMBEDDED WORKBENCH IDE " getting so much of errors couldn't able to solve those errors. now i'm trying in linux platform , can any one suggest me any web pages or any tutorials to implement this task. any help will be greatly appreciated! Thanks Ramesh

Sir can you make HTTP Advanced Update OTA from Raspberrypi server and esp ?

why does mine get Arduino: 1.8.5 (Windows 10), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Disabled, All SSL ciphers (most compatible), 4M (no SPIFFS), v2 Lower Memory, Disabled, None, Only Sketch, 115200" Sketch uses 306540 bytes (29%) of program storage space. Maximum is 1044464 bytes. Global variables use 27728 bytes (33%) of dynamic memory, leaving 54192 bytes for local variables. Maximum is 81920 bytes. Uploading...... 23:12:32 [ERROR]: Error Uploading 23:12:32 [ERROR]: Error Uploading This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

Please create video about esp8266 sheduler, how this can be done

The yield() call in your loop should not be needed.

your voice sound different that now

Thank you for your videos, they are really interresting! You open so many "doors" for our schools projects! If I may ask you an advise, my students and I are working on a school project with an ESP8266. We need a sub program (only activate on boot of the program by a special input during the first 3 sec) to start the Wifi to get update OTA like the one you show in that video. We try so many things, it seems to work but the wifi is always on and we don't want that (wifi on only when this sub program is activate). May we ask you to take a look of our small program to help us find how to get only wifi activate when the sub program is chose? www.cjoint.com/doc/16_10/FJAnVSqI1Mv_UPdate-on-demand.ino My students and I thank you in advance.