Hey guys I'm working on a senior project for college and am fairly new to Arduino.
I have been working with it and the software (Windows 7) for a few weeks now but just got an error today I've never gotten and I have tried everything (that I know of) to fix it.
I am getting an error reading my Arduino Uno 3 from the serial port. Mine is COM3 and that's what I've been using since I started the project.
When I try to upload even the simple "blink" code I get this.. I've restarted/reinstalled the software/reinstalled drivers/etc. and nothing works PLEASE HELP!
PatGreen:
I had this same problem while working on Ubuntu 12.04 LTS. I managed to fix the problem via running it under sudo. Try running it as administrator.
This "fix" is specific to Linux and of no help to anyone on Windows.
60centenergy:
Mine is COM3 and that's what I've been using since I started the project.
If the board stops enumerating (and showing up as a serial port) it usually means the ATmega8u2 chip that does the usb to serial work has been damaged. Common reasons are: changing connections while powered or accidentally connecting 12V a pin or shorting something out.
Is the device showing up at all in Device Manager?