Is it normal that I can't upload code when my W5100 Ethernet Shield is on my Arduino Uno?
Guys Is it normal that I can't upload code when my W5100 Ethernet Shield is on my Arduino Uno? I have to remove it every time I want to upload, and I'm not sure if that's normal. Moreover, I can't get the example sketches to work, so I suspect it might be faulty. :/
Solution
I suggest check whether the pins of an Ethernet shield goes properly into the pins of arduino. The shield uses SPI pins that are Pin# 10,11,12,13 and I don't think it has anything to do with UART pins Tx, Rx because while uploading code in arduino Tx, Rx will be used by arduino. So its possible there must be issue with ethernetshield
