The link above is a video of the working inverse kinematics. Now I don't have the arm on my desk, so I can't write the firmware that ties the arm to RO. However! RO is ready to connect and talk with Mantis.
My interest is drifting towards easier ways to move the arm in VR. The more I use RO the more I want to fly like an FPS game and push/pull the virtual model rather than click buttons on the side.