Why install Node.JS on a Raspberry Pi ?
And so when I come up with an application where I want to use my Raspberry Pi as a micro web server, but one that needs more than the ability to serve static webpages, I right away think of Node.
Coming soon – how I built an NFC card reader on the Raspberry Pi with a web dashboard displaying NFC events detected in real time…
You sometimes need to find out the MAC address of your Raspberry Pi. For instance, you want to find it among the list of devices attached to your LAN, because you want your router’s DHCP service to assign your RPi a permanently dedicated IP address instead of letting the DHCP just assign it the next available IP address each time you start it up. Then you can SSH into the same IP address each time to log into your RPi from your PC or Mac knowing it will always be there, without having to search for the RPi on the network.
Some LANs are configured to allow access only for a white-listed devices by MAC address, so you’ll also need to know yours to be able to use such a LAN.