Just a quick question, my Arduino Uno 3 sometimes will be disconnected from the PC when I run the code. For example, in my code one LED will be turned on when I press a mini push button. The code is fine and so is the connection. However when I press the button I can hear the sound of disconnection of USB port from my PC (you know the sound when you plug/un-plug USB card into PC). After a second it will be automatically connected back again.
I only noticed this behaviour since I started to switch usage between the clone 'Funduino' and the real Arduino. I guess the +5V power is somehow suddenly cut-off and turned back on again in this scenario. Anyone knows the reason ???
Thank you very much.
Kind Regards, Jeff