How to create a Static IP on the Raspberry PI

Do an ifconfig and see what interface you are using - wlan0, eth0 etc

# Edit the dhcpcd.conf file and down the very end add the following

sudo nano /etc/dhcpcd.conf

# Set static ip for Ethernet
                   interface eth0
                   static ip_address=10.5.5.72/24
                   static routers=10.5.5.1
                   static domain_name_servers=10.91.100.71

Save the file, restart the pi and the IP should be static