This is how I configured a Pi to use Eduroam. Note that this is quite old and may be site specific sorry!
in the WIFI Config ap Scan to find Eduroam
Edit its config and check you have:
WPA2-Enterprise (EAP)
Encryption: CCMP
EAP Method: TTLS
identity: yourID@soton.ac.uk
Password: your university password
CA certificate: /etc/ssl/certs/AddTrust_External_Root.pem
Inner auth: MSCHAPv2