This "Disco Floor" is actually an interactive environment for Brain-Based Devices (BBDs). Using LEDs, each acrylic tile on the floor can be lit with one of six different colors. There are also Infra-Red LEDs sending salient information to the robot when he is directly on top of the tile.

The tiled floor is easily reconfigured, and can be used for open-field or virtual maze experiments.

The floor is controlled by computer via a CAN network. Each tile is capable of diplaying 8-bit RGB color, as well as DTMF tones. When the C.A.R.L. robot is over the tile, it receives a serially-transmitted IR signal, which activates one of several different neuromodulatory systems in its brain-based simulation.

The video below shows C.A.R.L. in his interactive environment. He has previously learned that green is a "good" color, and that red is "bad" color, and responds accordingly. The robot can see blue and purple as well, but it has learned that these colors have no special meaning.