“This instructable is kind of long and involved. There are several projects rolled into one to give me a portable network testing lab, allowing me to diagnose network problems, shark packets from wired and wireless networks, test patch cables and help to map wall ports to patch panels.
The project uses a combination of Raspberry Pi and Arduino. It is likely that it all could have been done with the Pi but I am fairly new to it and each of the additions I made was a struggle to get working so the thought making a complete annex of another 2 projects was too much to bear.
I hope that you find all (or sections) of this instructable useful as I believe it will make the network portion of my job easier.”