Point out to them that under sale of goods legislation that if the goods fail in a short time frame that a court would assume the goods were faulty when made.That said....are you sure dmesg in Linux comes up with nothing when you plug it in?
Same please help I've been working so hard for cnc project. When the uno board arrives I hooked it up to my pc and it works just fine. I put the cnc shield on and motors diver and tested it. So far the is there is no problem and I was very happy. The next hour I plugged in the board to my pc, I've looked at the board a every thing is still the same. But when I opened the Arduino IDE, it can't detect in which com port is connected. So I unplugged the board and try it again, nothing happens. Then I went to YouTube and see if there is any solution I've tried every thing that I can found and stil no luck. If any body know how to fix this problem please tell me. The thing is for me to get another uno bord in Indonesia is very hard. Yes I could get it online and ship it here but also the board is pretty exapensive if you looked it up in Indonesian point of view and I don't want to waste my parent money. I would appreciate any help.
I have the same problem of my board not getting detected.... I bought this Keystone learner kit and am using it after 5 months and the board is not appearing on com port ....so I guesss the seller wont replace my board too as its too late....sucks
Today I discovered the Arduino Uno board can't be detected by my laptop anymore. Apparently the COM port has disappeared from Device Manager completely (yes, I've checked if it's under hidden devices, it isn't - as any other COM port, actually).