After the post about connecting to SUTD's VPN is now time to connect eduroam! Again, SUTD's IT support for (Arch) Linux at the time of writing is none.
SUTD runs a setup with only username-password (no certificates required) and the connection can be established using the GUI of NetworkManager. If your WiFi card is on and eduroam is in your range you should see the eduroam SSID on the list of the available WiFi networks.