Arduino UNO no longer appears as a serial device

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tmanz
 
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Arduino UNO no longer appears as a serial device

Post by tmanz »

Hi Adafruiters,

Got a slight problem with my new Arduino UNO one day after receiving it, unfortunately I think its bricked. :(

So initially out of the box registered under /dev/ttyusbmodem411 and could program with the Arduino IDE. Used to sweep a servo by loading the tutorial sketch, worked fine. Next day I plug the Arduino in however no more serial port and cannot connect via Arduino IDE.

The previous servo sketch is still on the Arduino UNO and is working however cannot connect via Arduino IDE anymore.

Seen this happen? Have a fix? or is the chip bricked?

So far I've tried updating the FTDI drivers (although the UNO does not use FTDI, thought I'd try any way)

Help/Advice appreciated!

adafruit
 
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Re: Arduino UNO no longer appears as a serial device

Post by adafruit »

try a different cable, computer, usb port, etc.

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tmanz
 
Posts: 2
Joined: Mon Jul 30, 2012 12:02 am

Re: Arduino UNO no longer appears as a serial device

Post by tmanz »

Hi,

Yes I've tried a new cable and another computer today. The Arduino Uno still does not show up on the /dev/tty list. However the servo program is still running on the atmega328p-pu.

I still cannot serial connect the device.

I have also looked at other forum posts on the atmega16u2 being the culprit. I followed the information provided on arduino.cc to put the chip into dfu mode in order to reflash the firmware however the dfu-programmer says the following:

wrt-home:Desktop user$ sudo dfu-programmer at90usb162 erase
dfu-programmer: no device present.

Still no luck connecting via serial.

Regards,

Thil

adafruit
 
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Joined: Thu Apr 06, 2006 4:21 pm

Re: Arduino UNO no longer appears as a serial device

Post by adafruit »

Hmm, not sure whats up with it - lets try to replace it. email support@adafruit w/a link to this thread and we'll send you another :)

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