This is a project I've been working on to allow me to reuse old Brio train sets as an elaborate track for taking time lapse videos around my printer. This thing contains the parts I've used for attaching a gopro and routing wires, however I plan on posting a more detailed description of the build process and electrical modifications to the train. Happy filming!
This set contains two components: a GoPro mount for attaching a camera to a Brio train set carriage and a train track piece for running wires underneath. This setup allows you to have the train circle the print taking photos.
Print the mount and track piece separately, and I recommend hot glue for attaching the mount to the train car.