Hello. I'm having issues with the arduino uno that I purchased from adafruit.
I've used plenty of these in the past and this is the first time I've ever had an issue. I've tried multiple pc's, usb ports, etc, but no computer will recognize the arduino anymore. It worked the first day I got it for about 30 minutes to test a sketch and make sure it worked. I went to program on it today and the computer comes up with 'Unknown Device' no matter what I do. The previous code uploaded to it still functions when I plug it in, but I can't change it at all now!
I looked at the log file in the windows INF folder, not sure what snippet to paste but there is a lot of UNKOWNDEVICE in there.. Frustrated because I needed this by tomorrow and now the board doesn't even work at all
I have just purchased my first Arduino UNO rev.3 and am having the same problems with unrecognized device. Mine though, will load and program properly on two other computers that are not mine. I have two computers at home, neither will recognize the Arduino. I can load the Arduino software package ok and verified the driver is there. I have used Windows XP and 7, tried several usb cables,usb and wall power. It seems the computer can't link the device driver to the unrecognized usb device if the UNO dosen't send it's name to the device driver. I'm lost at this point and would appreciate any ideas.
Did the uninstall, then replugged the UNO back in. Same results. I can point the device driver right to the driver location and it still can't recognize it. If I get a second Arduino board, maybe from another vendor, I might have better luck. Maybe need to find a Duemilanove that uses the FTDI chip instead of the ATMega16u2 that the Uno Rev3 uses. What do you think?
Glad you asked that! I went back and double checked the path I was using and discovered that it actually pointed to the FTDI drivers. So I wrote down the correct path and typed it into the device driver manager and it found it, installed it and now under Ports(com&LPT), is listed : Arduino UNO rev3 (com3). Thankyou so much for the help, I'm a happy camper till the next future hurdle!