Defective Arduino(s)

Development Tools IDE 1.x
1

Hi,

I have 2 arduino boards ('Freetronics Arduino Eleven' and 'Arduino Uno') which both plug into USB and power up but there is no communication.

I have tried on multiple computers on multiple (windows) operating systems but the problem is the same.

The USB cable is unlikely the issue because both need seperate cables.

The driver likely isnt the problem because I have tried on multiple computers.

Windows does not even display an unrecognised device in device manager, I suspect a fault piece of hardware on the Arduino(s) as they used to work.

2

If both of them worked, and now they don't - can you expand on what you had them doing last from a hardware perspective before they stopped working?

3

Are you able to use other Arduino boards?

Do you have the right drivers? Many Arduino clones use a different usb serial chip than the official ones, so you need the drivers for that. Check the part number on the ic near the usb connector.

Does a com port appear in the list if they're plugged in?

4

DrAzzy:
Are you able to use other Arduino boards?

Do you have the right drivers? Many Arduino clones use a different usb serial chip than the official ones, so you need the drivers for that. Check the part number on the ic near the usb connector.

Does a com port appear in the list if they're plugged in?

Like I said, there is no evidence that data is being transmitted via USB. No evidence in device manager.

the Uno stopped working first and after a while the Eleven stopped working. The code on them still run (Pin 13 fades from low to high)

5

My recommendations:

Try a different and new USB cable so you can change your statement from "USB cable is unlikely the issue" to USB cable is 100% known to not be the issue.

Re-install the USB-serial firmware on the ATmega16U2 USB-to-serial chip using DFU programming if you can successfully put the chip in DFU mode and install the ATMEL driver, or if you can't put the chip in DFU mode use ISP programming to re-install the firmware with the ICSP header near the USB connector.