You should post a link to the ethernet shield and the proto shield.
You should also explain how they are connected. Which shield is connected to the Arduino?
Which model Arduino do you have? Does it work ok by itself?
Hi, thanks for the answers!
I have a Wiznet w5100
and this protoshield:
I've attached a picture that show how they are connected and how the protoshield touch the RJ45 case (but I've checked and there is no risk when they touch each other, nothing is connected on the protoshield on that area)
The Arduino UNO R3 works fine, but something curious happened. I was getting an error when uploading a skecth, and I've checked and in the IDE Tools->Board, the board was changed to Duemilanova...
I set it again to UNO and the error disappeared. Strange!
Another question... I know that my ports are closed, could that be the problem?? But its strange because it worked for a while
If you remove the protoshield, does the ethernet shield start working again?
. It won't work. I've changed the UTP cable, rebooted the modem, change the ip, the MAC, but nothing