Hi, I have purchased this boad and a Nextion 3,5 inch display. I tried all kind of things to get this working, struggeling with the serial. Solved that, but now I run into an issue with my project. I have an old Arduino Uno R3 here as well and my simple project is running fine. Switching to my…

Welcome to the forum [image] biarritz: Switching to my R4 Wifi it is not working at all. Please post your full sketch, using code tags when you do. and explain what does not work. What, if any, external components are attached to the Uno ? Do any of them apart from the Serial monitor use …

Hi, Please find my code here. It is a sample code that can be found here extenderd with a pressure sensor: https://github.com/itead/ITEADLIB_Arduino_Nextion/tree/master/examples/CompNumber #include "Nextion.h" SoftwareSerial HMISerial(5, 6); const float OffSet = 0.524 ; float V, P; void n0P…

[image] ZinggJM: Hope this helps. The sketch will not compile for me Using library Nextion at version 2.0.2 in folder: C:\Users\Bob2\Documents\Arduino\libraries\Nextion Using library SoftwareSerial at version 1.0 in folder: C:\Users\Bob2\AppData\Local\Arduino15\packages\arduino\hardware\ren…

Tried using pins 0 and 1 for days but no result. I'm no expert so I will try anything that I find on the internet. Tried many examples with different libraries, but nothing worked so far. I found this in the documentation. UNO-like Mainboards If your board has only one hardware serial, such as UN…

By the way I got it to update the firmware 3.0.3 , but now I cannot upload any code with IDE. This is taking me too much time so I will return it for a Arduino Nano 33 IOT.

[image] biarritz: Tried using pins 0 and 1 for days but no result. In what way did you try to use it ? In the sketch that you posted you create an object named HMISerial but then don't appear to use it

Hi @biarritz [image] biarritz: now I cannot upload any code with IDE. Please try this: Unplug the USB cable of the UNO R4 WiFi from your computer. Plug the USB cable of the UNO R4 WiFi back into your computer. Try uploading again. After you perform a firmware update, the UNO R4 WiFi is le…

I tried every example with Arduino Uno in combination with Nextion display that I could find.

Ok tried that already, but now I can upload code again. Still did not fix my issue, so returning the board.

Arduino UNO R4 WIFI firmware updater

Official Hardware UNO Family UNO R4 WiFi

ZinggJM September 10, 2023, 12:32pm 4

I also had problems with the firmware updater. It consistently failed to install 0.3.0.

I then installed 0.2.1, success on the first attempt.

Then I tried to install 0.3.0 again, success at first attempt.

Hope this helps.
-jz-

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I can't update the firmware on my Arduino Uno R4 WiFi

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Arduino UNO R4 WIFI firmware updater

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