Hi everbody.
I know that is boring title. Actually I read probably all title like that but ? can not find any solution. Before times When I take this error, I change the usb port of arduino then or restart the IDE, the problem will be solved.
But when this morning I plug in my arduino uno to my computer , suprisingly I take this error. But here is the point , While I send to code to the arduino just RX pin is blinking a few times . I tried also short the rx and tx pin the I can open the serial montior ( it still work ) then what I send exactly I get. I try arduino with other computers it gives same result.
Also there is one thing computer see arduino as a com34 . It does not change even I change the port number of the usb. My arduino worked normally until this morning.
What is the possible reasons ? Please help !! I am stack. I have not live expericence like that.
Thank you.