Comments on: ESP8266 NodeMCU OTA (Over-the-Air) Updates – ElegantOTA Library with Arduino IDE

By: Sara Santos

Sara Santos — Fri, 13 Feb 2026 17:43:35 +0000

In reply to PJ Allen.

Yes.
It’s a typo.
It’s fixed now.
Regards,
Sara

By: PJ Allen

PJ Allen — Thu, 12 Feb 2026 22:02:32 +0000

ElegantOTA ESP8266 Basic Example
Let’s start with a basic example (based on one of the library’s examples). The following code creates a simple web server with the ESP32.
Shouldn’t that be “with the ESP8266” ?

By: dan21

dan21 — Tue, 18 Nov 2025 08:52:14 +0000

Hello,
I have ESP8266 with AsynDemo example. I’ve changed ELEGANTOTA_USE_ASYNC_WEBSERVER to use async web server. Build and load is OK with no errors. ESP connected to my network. I can see OTA “homepage” but when I try to load /upload page browser just got stuck. No upload page is loading !! I modified response on upload (ElegantOTA.cpp) to return some text and this is working !!!!!! So is there any problem whit that gzip-ed page ?
Dan

By: dan21

dan21 — Mon, 17 Nov 2025 19:41:34 +0000

Hello,
I’m trying to use ElegantOta on my ESP8266. I used AsyncDemo.ino (Copy-Paste code) with my ssid and password. Also changed “ELEGANTOTA_USE_ASYNC_WEBSERVER 1”.
I could build it, loaded to the ESP. Root page working OK, but when I type {myIP}/update
then browser starts loading page but never finished !!!!!. I used Postman to se what is going on, but the request is “never ending”. I used three different ESP8266 board but non of them worked – same issue !! Could you point me where to look for problem ?
Thank you.
dan

By: Sara Santos

Sara Santos — Mon, 27 Oct 2025 15:06:11 +0000

In reply to Helmut Bayerlein.

Hi.
What is exactly the error that you’re getting?
What libraries and versions are you using?
Also, what version of the ESP8266 core are you using?
Regards,
Sara

By: Helmut Bayerlein

Helmut Bayerlein — Sat, 25 Oct 2025 12:24:24 +0000

In reply to Martin Eggers.

Hello Martin,
did You get any response? I have the same problem and don’t know, what’s going wrong!

Best regards,
Helmut.

By: werner

werner — Sun, 24 Aug 2025 13:51:56 +0000

Hello
I am trying to use the ESP webserver project together with elegant Ota, but then the relays no longer work. The website is being updated. no GPIO switch.
“ESP32/ESP8266 Relay Module Web Server using Arduino IDE (1, 2, 4, 8, 16 Channels)”

By: Jacques Bourgouin

Jacques Bourgouin — Sun, 23 Mar 2025 21:16:56 +0000

Hello,
I have succeeded to use ElegantOTA to reprogram the firmware of a ESP8266 via OTA.
How do you get a .bin file for the /data containing index.html, *.js .. ?
I did see this information in your examples
Thanks

By: Sara Santos

Sara Santos — Sat, 15 Mar 2025 10:36:28 +0000

In reply to Dave Z.

Hi.
Thanks for the info.
But, I’m also not sure how to do that in Arduino IDE.
Regards,
Sara

By: Dave Z

Dave Z — Sat, 15 Mar 2025 06:26:18 +0000

A more “Elegant” way to than ” #define ELEGANTOTA_USE_ASYNC_WEBSERVER 1 ” is to use a build flag ” build_flags = -D ELEGANTOTA_USE_ASYNC_WEBSERVER=1 “, this has the advantage of not needing to be redone if the library is updated. (I do not use Arduino, not sure if you can use Build Flags in Arduino?)