Hi I just wanted to ask everyone on the forums if the Leonardo's RX LED is supposed to keep flashing every second? Coz as far as i know, RX is supposed to be flashing only when its receiving something? Regardless of whether there is a sketch being loaded or its just sitting there connected to the computer, the LED still flashes. Can anyone shed some light on this? Thanks in advance!
If you ae pretty sure that your programme is all right and not sending any serial chars then there might be some other serial console programme sending To your arduino.
Or may be you have loop back on your arduino thats rx and tx connected together.