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Topic: Arduino Uno Driver issues. (Read 1 time) previous topic - next topic


Im brand new to the whole Adruino stuff and need some help.
I recently purchased an "Experimenter's Kit for Arduino Uno" and I am having difficulties installing the driver. I have an Arduino Uno R3 and the  Arduino IDE cannot communicate with the board. In the Device Manager the device shows up  under Other devices as ATmega16u2 DFU and on the board, the green and orange lights stay on, the orange one does not blink. I have tried Update Driver Software in Device manager. Windows 7 searches for driver update but is unable to install driver. I tried doing it manually by selecting the arduino driver folder for where to find the driver but it still wont recognize it. I have tried using a different computer, but the same thing happens.
I have FLIP and Arduino installed and my laptop runs Windows 7
Im not sure what I should do

Louis Davis

See this post for DFU mode:

The short answer is that if your 16U2 came un-programmed, there is a good chance the main processor is un-programmed as well.
So even if you are able to reprogram the 16U2, you still need to figure out a way to program the 328.

I would send it back and see if you can get a replacement.



Hello there,

I am facing a somewhat similar problem with the driver installation for my Arduino Uno. As per the Arduino installation instructions, I should see "Arduino (COMxx)" under the Ports (COM & LPT) in Device Manager. But I do not see this. The Arduino Uno is, however listed under "Other devices." If I right click here and choose the "Install driver" option I can manually browse it till the unzipped "driver" folder, but the "ArduinoUNO.inf" file does not show up.

I know that the "ArduinoUNO.inf" file is definitelt there as I can see it if I open the folder manually!

I have tried this with both the 1.0.3 as well as the 0023 versions, but with the same results. BTW, I am using Windows 7.

Can someone help me with this......THANKS!

Louis Davis

Steps to install the Arduino drivers in Windows:

Right click the Unknown Device in Device Manager
Select Update Driver Software
Select Browse my computer for software
Click Browse button
Select the Drivers folder under the location of your Arduino software installation. (Do not select the FTDI folder inside the Drivers folder)
Click OK
Click Next

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