Very good, thank you. I'm already using your '15 second from restart' idea on my light switches, together with Andreas's reed switch idea for the reset, now I don't need to bother with the reed switch, thank you!

so simple yet so elegant! i've just started messing with OTA programming and kept running into a wall with http server and OTA running side by side. i did one thing differently though - i implemented an async wait function, so it's not blocking the main loop.

Great tutorial. You speak very clearly and at a rate that can be absorbed by a learner. Well done!

Thankyou , this is what I kneed, very clear and informative explenation for us who still is new to OTA. I like Your videos, please keep making them for us. Once again, a big thanx!

Nice demo and tutorial. Thanks

thank you, have been looking for this

Very good tutorial 👌 👍 👏 this is a great function!

Very useful video Cisco! Thanks

Cisco - thank you so much for your tutorials. I went from zero to (very nearly) hero RE ESP8266 and OTA with these two tutorials. Simple, well explained, and no showing off... (apart from that neat trick with the LED - digitalWrite(2, !digitalRead(2)); ) That is cool! Thanks++

Very good tutorial - thanks

Thanks, you are making very useful video. keep it up (y)

love u bro for such informative videos. God bless you.

Brilliant tutorial Thank you very much. I just wanted to add a finding of my own... If you open a second instance of Adruino and set port to the USB Com Port you can still have access to the Serial monitor in the second Arduino IDE whilst still be able upload via WiFi from the First Adduino IDE. Handy for debugging. Harry

I have a mega 2560(ch340) pro micro running my project. Can sketches be uploaded wirelessly through an esp32 UART ports ?

Hey, I want to use NodeMCU ESP8266 to flash code on STM32 based MCU, what are the steps should I take ?

Thanks for video. I am facing one issue, Not sure if its IDE issue or something else. I tried your code from github but I am unable to find any option to see network port in Tools->Port. I can see only COM ports option. Any suggestion? I m using latest Arduino IDE 1.8.12 in widows 10. Do we have any other option to validate.

this is helpfull. thank you

Brilliant!

Very Nice Explanation

what is the point of OTA if serial monitor is not supported. is it possible to direct the serial port data to a webserver so the serial port output can be seen on the webpage.

Very useful and well explained video

Great!

Is it possible to do this process if the arduino and system are not conected to the same Wi-Fi. I want to know if we can do this if both are connected via internet, at two different locations

Nice informative videos about OTA programming! I've been thinking about implementing it in some of my projects as well. Why didn't you choose to just call the OTA.handle in the main loop, say every second? Performance issues? Or would the Arduino IDE time out (does it need a continuous handle loop)?

Thank you Cisco.

Bro is Jacked :P

Thank you for this video. Very helpfull. I see you modified w/in loop, but can one also modify setup section?

Thanks. I have seen some firmwares that allows ota upgrade via wifi without going through lots of code. If you are aware, pls make a video about it.

very nice topic like always great, but as i saw you missed about telling linux users about "avahi" installation to be able to use mdns :) thanks again

Hi Cisco, Two great videos, thank you. I am using two boards, i.e. an ESP32OLED (wifi and BT) and a Wemos D1 (wifi). The sketch compiles fine for both boards, but the wifi com port only appears for the ESP32. The OTA functionality works well on the ESP32. When I plug in the D1, and change boards on the IDE, the wifi com port disappears. Naturally I have run through the same setup steps for the D1. Any ideas? Thanks

Hello Cisco, thank you very much for your work. It doesn't necessarily have something to do with the content of this video, however, I was wondering how one can regain access to error messages, especially those in ArduinoOTA.onError, without a terminal window. Thank you for your time.

very good

It's just so good. Could make a video how to optimize the OTA code to avoid that annoying 15 sek delay? Maybe we can use some script to poll esp8266 for reset and start OTA immediately?

Your videos have really helped me learn the 8266, and the OTA stuff is awesome. However, no one ever really takes it to the next step to show how to incorporate code within the OTA feature -- Even a basic water sensor sketch. So, how does one make full-featured sketches incorporate into OTA code?

Thanks so much for this, it's such a great explanation as ever!! and it worked straight out of the box like a dream! I also managed to change it to work with ESPAsyncWebServer with no problems! I am also looking at your tutorial "ESP8266 Web Server Upload Files Quick To SPIFFS Flash Memory Over HTTP w/ Arduino IDE", as I will also probably want to be making changes to the pages my esp8266 is serving. I notice (in reading the code to try and understand it more, I don't like to just cut and paste ...) that the ArduinoOTA.onStart appears to be able to update the SPIFFS as an alternative to the sketch, but I have no idea where ArduinoOTA.getCommand() is set to U_FLASH and can't find anything about setting it to U_SPIFFS? Any ideas or should I just use the curl command over HTTP as explained in your video? Thanks again for all of your help, you make exploring the esp extremely clear and accessible to me!! Pete

Hi Thank I tried in nodeMCU, it is working, is there any posible ways to do the OTA from other network means remotely Assumption esp connected in a Wi-Fi

Hi Cisco, ESP01 also have procedure problem in OTA. As we know, ESP01 is programmed in shorting GPIO0 to GND. Normal operation in open of GPIO0. This also a good challenge for me. Do you have good idea ?

It worked quite OK, but I found that on a running system with 6 MQTT nodes which run all the time, if I turned up with my notebook to upgrade firmware on any node, the Arduino IDE does not see the controllers WiFi port. It only sees the port when ArduinoOTA.handle() is executed. What I do is I execute that function once a minute WHEN THE OTA flag is NOT set. At most the laptop only has to wait for a minute before the WiFi ports are recognized.

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

Why to spin up the whole web server to manipulate with this, instead of just keep calling OTA.handle() in the program main loop unconditionally

Can you provide the link for the CH340g driver

One problem I see for larger code. You opened your IDE and made small modification to a rather bigger code than this minimalistic example. You want to upload, so you go to your browser and type the setflag thing. Now you will have 15 seconds to close your IDE, open it again, find and select the OTA port in the IDE and hit upload. As far as I understand the procedure, the IDE will at least have to start sending data to the device within 15 seconds. That's not realistic with bigger code. Or does your sketch broadcast it's OTA port even when the ota_flag is not set?

How can 7 not like?

If the upload fails at 0% the firewall on your computer is blocking the ESP from downloading the file.

Honestly I dont understand what you are trying to show here. I have been using OTA long time already and the OTA handle does not interfere at all and I can update over the air any time I want

Can this code work on NodeMCU V3 also please ? thanks.

I tryed on NodeMCU and the webserver it's ok. I then choose the net port and put NodeMCU in Restarting... Then I take an error: "07:00:00 [ERROR]: No Answer" :-( Can you help me please ? Thanks a lot

I am getting no answer error message. I tried every thing. No use. Have esp8266 12e. And use arduino r3 and jumper wire to flash initially. Ota doesn't work.

I know this joke! You have a wireless programmer in your power bank! 😁👍

Can this be done out side the LAN ?

what is the t for in uint8_t

Can i upload code to esp8266 through ota from Android??

how to store data of ota programing if sensor is connected

hello Cisco, a good video but still a thumbs down. why the music? it distracts from what you tell. if I want to hear music then I will go to the right channel on youtube. continue with your good explanation videos (without The music). greeting, Jan

Arduino: 1.8.5 (Windows 7), Board: "NodeMCU 0.9 (ESP-12 Module), 80 MHz, Flash, 4M (1M SPIFFS), v2 Lower Memory, Serial, None, Only Sketch, 115200" C:\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Arduino\hardware -hardware C:\Users ama\AppData\Local\Arduino15\packages -tools C:\Arduino\tools-builder -tools C:\Arduino\hardware\tools\avr -tools C:\Users ama\AppData\Local\Arduino15\packages -built-in-libraries C:\Arduino\libraries -libraries C:\Users ama\Documents\Arduino\libraries -fqbn=esp8266:esp8266:nodemcu:CpuFrequency=80,VTable=flash,FlashSize=4M1M,LwIPVariant=v2mss536,Debug=Serial,DebugLevel=None____,FlashErase=none,UploadSpeed=115200 -ide-version=10805 -build-path C:\Users ama\AppData\Local\Temp\arduino_build_943895 -warnings=none -build-cache C:\Users ama\AppData\Local\Temp\arduino_cache_281809 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.xtensa-lx106-elf-gcc.path=C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2 -prefs=runtime.tools.esptool.path=C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\esptool\0.4.13 -prefs=runtime.tools.mkspiffs.path=C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\mkspiffs\0.2.0 -verbose C:\Users ama\Desktop\sensor\otawireless\otawireless.ino C:\Arduino\arduino-builder -compile -logger=machine -hardware C:\Arduino\hardware -hardware C:\Users ama\AppData\Local\Arduino15\packages -tools C:\Arduino\tools-builder -tools C:\Arduino\hardware\tools\avr -tools C:\Users ama\AppData\Local\Arduino15\packages -built-in-libraries C:\Arduino\libraries -libraries C:\Users ama\Documents\Arduino\libraries -fqbn=esp8266:esp8266:nodemcu:CpuFrequency=80,VTable=flash,FlashSize=4M1M,LwIPVariant=v2mss536,Debug=Serial,DebugLevel=None____,FlashErase=none,UploadSpeed=115200 -ide-version=10805 -build-path C:\Users ama\AppData\Local\Temp\arduino_build_943895 -warnings=none -build-cache C:\Users ama\AppData\Local\Temp\arduino_cache_281809 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.xtensa-lx106-elf-gcc.path=C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2 -prefs=runtime.tools.esptool.path=C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\esptool\0.4.13 -prefs=runtime.tools.mkspiffs.path=C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\mkspiffs\0.2.0 -verbose C:\Users ama\Desktop\sensor\otawireless\otawireless.ino Using board 'nodemcu' from platform in folder: C:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2 Using core 'esp8266' from platform in folder: C:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2 Detecting libraries used... "C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/include" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/lwip2/include" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/libc/xtensa-lx106-elf/include" "-IC:\Users ama\AppData\Local\Temp\arduino_build_943895/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DDEBUG_ESP_PORT=Serial -DARDUINO=10805 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2\cores\esp8266" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2\variants odemcu" "C:\Users ama\AppData\Local\Temp\arduino_build_943895\sketch\otawireless.ino.cpp" -o "nul" "C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/include" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/lwip2/include" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/libc/xtensa-lx106-elf/include" "-IC:\Users ama\AppData\Local\Temp\arduino_build_943895/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DDEBUG_ESP_PORT=Serial -DARDUINO=10805 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2\cores\esp8266" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2\variants odemcu" "-IC:\Arduino\libraries\Keyboard\src" "C:\Users ama\AppData\Local\Temp\arduino_build_943895\sketch\otawireless.ino.cpp" -o "nul" "C:\Users ama\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/include" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/lwip2/include" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2/tools/sdk/libc/xtensa-lx106-elf/include" "-IC:\Users ama\AppData\Local\Temp\arduino_build_943895/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DDEBUG_ESP_PORT=Serial -DARDUINO=10805 -DARDUINO_ESP8266_NODEMCU -DARDUINO_ARCH_ESP8266 -DARDUINO_BOARD="ESP8266_NODEMCU" -DESP8266 "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2\cores\esp8266" "-IC:\Users ama\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.2\variants odemcu" "-IC:\Arduino\libraries\Keyboard\src" "C:\Users ama\AppData\Local\Temp\arduino_build_943895\sketch\otawireless.ino.cpp" -o "C:\Users ama\AppData\Local\Temp\arduino_build_943895\preproc\ctags_target_for_gcc_minus_e.cpp" In file included from C:\Users ama\Desktop\sensor\otawireless\otawireless.ino:1:0: C:\Arduino\libraries\Keyboard\src/Keyboard.h:25:17: fatal error: HID.h: No such file or directory #include "HID.h" ^ compilation terminated. Using library Keyboard at version 1.0.1 in folder: C:\Arduino\libraries\Keyboard exit status 1 Error compiling for board NodeMCU 0.9 (ESP-12 Module).

why do you have });

this is exactly how hackers owned the internet. by realizing that web apps have unprotected "/reset" urls. it should be illegal to teach like this in 21st century. it's sad truth that people who teach on youtube know little to nothing about proper software development. they just finished reading some arduino book and copy examples from it to teach others.

Restarting via unsecured HTTP endpoint - grand idea. (sarcasm)