I encountered a weird problem with my nano. In the beginning, everything worked fine, I could use it with my Win XP machine. However, the next (or maybe the 3rd or 4th) time I plugged it back to the USB, Windows informed me that the USB device couldn’t properly be recognized and should be changed if the problem persists. Note that the blink example which I uploaded seemed to work.
Thinking of a power supply problem of the FTDI I wanted to measure the voltage between the 5V and the GND Pins. Due to my clumsiness I shorted the GND pin with the Vin pin next to it while doing this… and, oh wonder, I heard the Windows unplug and plug sounds and the Nano was properly detected and ready to use.
Funny thing is, when I unplug and plug the Nano again, the same error occurs. Even funnier, when I shortcut the GND and Vin Pin it works again. And most funny, this exactly same errors has happened/is happening to me with two different nanos.
Anyone has an idea what exactly is not properly working, if something is actually really broken or any other issue?
Many thanks in advance and a merry christmas!
Note that nanos are remakes from 2 different vendors. Not because of the few bucks I save but because I enjoy the good service at amazon (GER), where unfortunately only nano remakes are in stock.