I have an arduino uno Rs board and when connected to USB the board is dead. Yet when connected to the external supply the board will come to live. Power LED on and led near pin 13 blink on and off all time. I tried another computer and other new usb lead. Still computer will not see the board. When usb lead is on checked the 5 volt on the board and it is ok. Even checked the usb lead with multi meter and all four connection are ok Can you give me some advice
1.Yes I bought the new board from different source but still waiting for it to arrive. 2. My clone board Arduino uno using microcontroller Atmega329P-PU and interphase chip Atmega16U2] 3 but the video link is still of help as my new board is as the one shown in the video. Will use it late. Great!!! There should be a similar explanation for the one I have in the picture