The main motivation behind this setup is to explore a moveable source. Could one perceive the location of the stimulation through a shell or piece of material?

In this first iteration, I'm using a motorized slider to move a weight along one axis.

In the final iteration, a motorized slider can move a dynamic source. The source carriage can either be a poking action (small solenoid) or a vibration source (mobile phone vibration motor). I have made numerous back panels to test transmission with a large variety of materials. A simple user-interface allows modification of timing/sequence parameters.