Arudino UNO r3

Development Tools IDE 1.x
1

I have been using a Sparkfun Arudino for the last year.
Just purchased Arudino UNO r3.
I was expecting to just simply plug in the UNO r3 and everything work just fine. since they are both ATmega328pu architecture.

This was not the case.
When I try to load a sketch I get the following error...
avrdude: ser_open(): can't open device ... com3

When I did me research it said I need the driver for ATmega16U2.
I can not find this driver to download to my computer on the Arudino site.
Can some one point me to the location of the driver so I can download it and get back to my project?

any assistance would be appreciated.

I have attached a screen shot of Windows trying to download the updated driver...

Thanks:ken

device driver issue 12 3 219 .JPG
device driver issue 12 3 219 .JPG777×561 43.1 KB

2

k2np818's device driver issue 12 3 219 .JPG:

device driver issue 12 3 219 .JPG
device driver issue 12 3 219 .JPG777×561 43.1 KB

k2np818:
I can not find this driver to download to my computer on the Arudino site.
Can some one point me to the location of the driver so I can download it and get back to my project?

It's included with the installation of the Arduino IDE in the drivers folder.

3

That's a weird error. Doesn't an Arduino usually identify as "Arduino Uno" and similar, rather than anything having to do with "16u2"? It's almost like the chip has an Atmel bootloader and not the Arduino firmware (is it a "genuine" Arduino Uno?)

For example, the Mega ADK (which also has a 16u2) shows up like this on my Mac - no mention of "16u2" anywhere!

Arduino Mega ADK:

  Product ID:    0x003f
  Vendor ID:    0x2341
  Version:    0.01
  Serial Number:    64935343733351801212
  Speed:    Up to 12 Mb/sec
  Manufacturer:    Arduino (www.arduino.cc)
  Location ID:    0x00322000 / 17
  Current Available (mA):    500
  Current Required (mA):    100
  Extra Operating Current (mA):
4

There have been quite a few reports recently of Unos (often claimed to be official by the users), which don't have the Arduino firmware on the ATmega16U2 and show up on the Windows Device Manager tree as "ATmega16U2". It seems to be fixed once they flash the official firmware to the chip.

I don't remember whether that is associated with the "A service installation section in this INF is invalid" error, as shown in k2np818's screenshot though, so this could be something different.