I recently purchased an Arduino Ethernet shield, plugged it on top of my Arduino Uno and loaded up the WebClient/WebServer sketches that comes with the Arduino 0022 IDE, but I could not get it working.
I've tried a number of IP address configurations, played around with the router, etc., but to no avail. I can't ever ping the device, and never see it appear on the router.
If the 'link' LED on the Ethernet shield is not lighting up when I plug into the Ethernet jack, is this a sign of a faulty board? Or is there some other diagnostic test I can try to verify the board is OK?
I'm thinking the board is the problem and will try another one.
Best Answer
If the LED is not lighting up, there's definitely a problem.
I'd check the power, try a different Ethernet cable, and - if possible - a different board.