title: "can't open device COM5" on arduino
body: <p>This is what I get when I upload the program. I'm connecting the Bluetooth module to my Arduino UNO board.</p>
  <blockquote>
  <p>avrdude: ser_open(): can't open device &quot;\.\COM5&quot;: The network location cannot be reached. For information about network troubleshooting, see Windows Help.</p>
  <p>Problem uploading to board.  See <a href="http://www.arduino.cc/en/Guide/Troubleshooting#upload" rel="nofollow noreferrer">http://www.arduino.cc/en/Guide/Troubleshooting#upload</a> for suggestions.</p>
  </blockquote>