sdar
1
Hi!
I have an two Arduino Uno R3's, one of them works perfectly, but the other does not.
When I plug the Arduino in nothing happens, and no COM port is available, also there is nothing in Device Manager.
I also tried programming it using an FTDI cable and plugging into the corresponding pins with no luck.
Any suggestions?
Is it a real Arduino?
If so, or the ATmega16u2 is broken or you need to burn the firmware again. See here.
sdar
3
I tried following the steps to burn the firmware again and I got this response form avrdude:
avrdude: Expected signature for ATmega16U2 is 1E 94 89
Possibile che sia usciti difetti ? Il mio venditore mi ha detto che vengono testati prima di essere messi in commercio
sdar
5
FrankyLeft:
Possibile che sia usciti difetti ? Il mio venditore mi ha detto che vengono testati prima di essere messi in commercio
It's not a new arduino, I got it from a friend but he had it laying around for awhile not sure if it got damaged.