Anytime I’m trying out a new Raspberry Pi project, I need to find its IP once it’s up on the network so I can access it. There are plenty of interesting ways to do this, but I always go with this simple way using nmap and awk. As always adjust as needed, for example if 192.168.1.0 isn’t your local subnet.
sudo nmap -sP 192.168.1.0/24 | awk '/^Nmap/{ip=$NF}/B8:27:EB/{print ip}'