Hello to all crazy-fans of arduino world
That is my first post... I am playing with arduino 2 weeks so please forgive me for any stupid questions. I have the arduino uno R3 and I have a strange problem with the Ethernet shield w5100
I using the example code of webserver from IDE. When I power the arduino up for the first time(power via USB) everything works perfect.But if I disconnect the USB and connect it again the Ethernet stop working. The leb link is always on and all the other LEDs off.If I leave it for 10 minutes with out power and then power it up it ok. I connect it to my Ethernet port of my laptop.
Please advice. Do you think it is a hardware problem or something else.