To upload it to your board, press the ‘Upload ’ button (arrow right) near the dropdown. A ‘BUSY ’ label replaces the buttons during code verifying and uploading. If the upload is successful, the message “Success: Done uploading ” will appear in the bottom output area.
I clicked the right arrow button, it said BUSY, but then I get this error:
Can anyone help me out? I’ve got an Arduino Uno and I’m using the web editor on Chrome OS (I installed the extension).