<![CDATA[ESP8266 & Arduino & GUI-O automatic pairing]]>@kl3m3n
Over two years ago, I installed "ESP8266 & Arduino & GUI-O automatic pairing," which worked perfectly! Now, I need to program new ESPs, but when compiling them in the Arduino IDE, I get a lot of error messages. I had to update the IDE (version 2.3.7). What can I do to fix these problems?

Sincerely, Bernard

]]>https://forum.gui-o.com/topic/302/esp8266-arduino-gui-o-automatic-pairingRSS for NodeSat, 11 Apr 2026 05:20:34 GMTSat, 21 Feb 2026 12:45:41 GMT60<![CDATA[Reply to ESP8266 & Arduino & GUI-O automatic pairing on Tue, 24 Feb 2026 14:55:00 GMT]]>@kl3m3n
Thank you for answering my questions, I have reinstalled GUI-O Bernard

]]>https://forum.gui-o.com/post/1238https://forum.gui-o.com/post/1238Tue, 24 Feb 2026 14:55:00 GMT<![CDATA[Reply to ESP8266 & Arduino & GUI-O automatic pairing on Mon, 23 Feb 2026 19:32:45 GMT]]>@Bernard Hi.

If password is "not set" then you will not be able to connect. You need to set the password. Just remove and reinstall the app, or see my other response here:
https://forum.gui-o.com/post/1227

Best regards,
Kl3m3n

]]>https://forum.gui-o.com/post/1236https://forum.gui-o.com/post/1236Mon, 23 Feb 2026 19:32:45 GMT<![CDATA[Reply to ESP8266 & Arduino & GUI-O automatic pairing on Sun, 22 Feb 2026 21:19:14 GMT]]>@kl3m3n
Hello,

I had an interesting experience: I submitted the problem to the IA, which advised me to do the following: choose the ArduinoJson 6.21.5 library and, in the program_ap.h file, put #include <ArduinoJson.h> at the beginning. Now the compilation and upload work! At the end of the upload, I see the ESP8266's Wi-Fi in GUI-O. So I don't know if this is a "solid" fix... I'm using Arduino IDE 2.3.7.

One more thing: In IoT settings, I have: Server name: mqtt.gui-o.com/ SSL port number: 8883 / User name: gui-o-mqtt-generic / User password: Not set / Client id: Not set / I'm asking this question because "Direct device pairing" fails every time! Your comment is welcome!

Sincerely, Bernard

]]>https://forum.gui-o.com/post/1231https://forum.gui-o.com/post/1231Sun, 22 Feb 2026 21:19:14 GMT<![CDATA[Reply to ESP8266 & Arduino & GUI-O automatic pairing on Sun, 22 Feb 2026 19:40:56 GMT]]>@Bernard Hi!

Yeah, I've been planning to update the examples for the new esp core library.

Sadly, I haven't gotten around to it yet. I've already updated some esp32 examples, but not the esp8266.

Currently, I don't have access to my PC, but I will try to update the examples in the following weekend... I will do my best and will let you know.

If you cannot wait that long, I suggest you try running an older version of Arduino IDE.

Best regards,
Kl3m3n

]]>https://forum.gui-o.com/post/1230https://forum.gui-o.com/post/1230Sun, 22 Feb 2026 19:40:56 GMT