please help!!!!!!!!!!!
Welcome!
The problem appears to be something wrong with the code as it does not match the hardware or maybe I am wrong. Hard to say by looking at the code and schematic you did not post.
Your topic has been moved. Please do not post in "Uncategorized"; see the sticky topics in https://forum.arduino.cc/c/using-arduino/uncategorized/184.
Your topic is lacking any detail; please read How to get the best out of this forum.
Among the missing details (but not limited to)
- Which Arduino?
- Which web can't you connect to? Arduino Cloud or are you talking about the Arduino Create Agent or something else?
- Which instructions are you following; please provide a link.
- Your code is probably relevant; please read up on the use of code tags in How to get the best out of this forum.
- Any other details that you can think of.
Portable apps for USB and serial I/O under Windows
If you are having problems with connecting to your Arduino or communicating with it here are some utilities you may find useful. They all run without needing installation (i.e. they are portable, you can even run them from a memory stick)
USB diagnostics
USBDeview is a small utility that lists all USB devices that currently connected to your computer, as well as all USB devices that you previously used.
USBLogView is a small utility that runs in the background and records the details of any USB device that is plugged or unplugged into your system.
UsbTreeView USB Device Tree Viewer is a lightweight utility that provides detailed technical information regarding all the USB devices you connected.
Serial monitors
Termite is an easy to use and easy to configure RS232 (serial i.e. COM port) terminal. It can also log the communication to a file.
PuTTY is an SSH and telnet client, developed originally by Simon Tatham for the Windows platform. Powerful but not easy for beginners.
it does not work i try to make my arduino a device it cheks firmeware no prob but when upload sketch error i try manules instructions no matter what does not work on macos. @ptillisch
I have merged your cross-posts @abc78982.
Cross-posting is against the Arduino forum rules. The reason is that duplicate posts can waste the time of the people trying to help. Someone might spend a lot of time investigating and writing a detailed answer on one topic, without knowing that someone else already did the same in the other topic.
Repeated cross-posting can result in a suspension from the forum.
In the future, please only create one topic for each distinct subject matter. This is basic forum etiquette, as explained in the "How to get the best out of this forum" guide. It contains a lot of other useful information. Please read it.
Thanks in advance for your cooperation.
Hi @abc78982. It will not be possible for us to help you with that problem based on such a vague description. I'm going to ask you to provide more information.
Please add a reply here on this forum thread to tell us which Arduino board you are using.
Please be as specific as possible as some Arduino boards with similar names have significant differences and the forum helpers can only provide effective assistance if we are aware of which one is being used.
If you aren't sure how to describe which board you are using, you can provide the link to the online product listing you bought the board from and we'll proceed based on the information found there.
Please provide the full and exact text of any error messages that are displayed.
By "when upload sketch", are you referring to the upload that happens during the Arduino Cloud Device creation process, as shown here?:
Or are you referring to a standard sketch upload you attempted separate from the Device creation process?
Please provide a link to the instructions you are referring to.
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