Light Valve Node

2022 Polarized glass, data-over-power, PCB frame

The Light Valve Node is a simple design that enables remote control of polarized “shutter” glass shards. Consisting of two inputs, a simple buck regulator, and a microcontroller, the frame is just 6mm wide.

The signal fed into the two inputs is a differential signal that is parsed into small packets of a custom serial protocol for controlling a group of nodes. This differential pair is also rectified to serve as the power input for running each node. The third purpose of the input pins is to serve as mechanical mounts to suspend each node on copper wires, keeping the overall frame as low-profile and inexpensive as possible to manufacture.

The number of nodes that can be grouped is limited only by desired framerate, allowing large-scale pieces to be constructed. They can be arranged vertically in front of a wall or window, or hung horizontally overhead.