Compilation error: Wire.h: No such file or directory

Using Arduino IDE 1.x
1

I am trying to #include <Wire.h>, but the error still comes that Compilation error: Wire.h: No such file or directory. I did some research and apparently it is included with AVR boards and I am using an Arduino Uno. How can I fix this?

2

Hi @mikchip. I'm going to ask you to provide the full verbose output from a compilation.

:exclamation: This procedure is not intended to solve the problem. The purpose is to gather more information.

Please do this:

  1. Select File > Preferences...(or Arduino > Settings... for macOS users) from the Arduino IDE menus.
    The "Preferences" dialog will open.
  2. Check the box next to "Show verbose output during: ☐ compilation" in the "Preferences" dialog.
  3. Click the "OK" button.
    The "Preferences" dialog will close.
  4. Select Sketch > Verify/Compile from the Arduino IDE menus.
  5. After the compilation fails you'll see a button on the right side of the orange bar in Arduino IDE: Copy error messages. Click that button.
    This copies the full output to the clipboard.
  6. Open a forum reply here by clicking the "Reply" button.
  7. Click the <CODE/> icon on the post composer toolbar.
    This will add the forum's code block markup (```) to your reply to make sure the error messages are correctly formatted.
    Code block icon on toolbar
  8. Press the Ctrl+V keyboard shortcut (Command+V for macOS users).
    This will paste the compilation output into the code block.
  9. Move the cursor outside of the code block markup before you add any additional text to your reply.
  10. Click the "Reply" button to post the output.

In case the output is longer than the forum software will allow to be added to a post, you can instead save it to a .txt file and then attach that file to a reply here.

Click here for attachment instructions

  1. Open any text editor program.
  2. Paste the copied output into the text editor.
  3. Save the file in .txt format.
  4. Open a forum reply here by clicking the "Reply" button.
  5. Click the "Upload" icon (Upload icon) on the post composer toolbar:
    Upload icon on toolbar
    The "Open" dialog will open.
  6. Select the .txt file you saved from the "Open" dialog.
  7. Click the "Open" button.
    The dialog will close.
  8. Click the "Reply" button to publish the post.

Alternatively, instead of using the "Upload" icon on the post composer toolbar as described in steps (5) - (7) above, you can simply drag and drop the .txt file onto the post composer field to attach it.

3

This happened to me once with a different arduino default library, what i did to fix it was save the file first then compile, i also rechecked if the .h file was in the code folder