Adafruit Large Liquid Crystal Light Valve - Controllable Shutter Glass

Experience advanced control over light with a Liquid Crystal Light Valve, a cutting-edge innovation that manipulates illumination through liquid crystal technology between glass sheets. This remarkable device grants you command over the opaqueness between clarity and dimness, touching different voltage levels.

The Liquid Crystal Light Valve is invaluable in environments like electric welding, offering essential eye protection by minimizing intense light exposure. Beyond safety applications, it caters perfectly to creative projects, enabling dramatic reveal effects through adjustable transparency features.

You can achieve varying levels of opacity by adjusting the voltage from 1.0VDC to a maximum of 5V. The glass begins to darken at 1.0VDC and becomes almost fully opaque at 4.0VDC, blocking about 95% of light while retaining minimal current usage. The valve maintains its darkness once activated, even after removing the voltage, offering further flexibility with signal manipulation.

Its symmetry provides versatile wiring options, while its delicate nature demands careful handling. Avoid bending or cutting this thin glass piece to maintain its integrity. For prolonged opacity, employ an AC square wave to prevent a damaging DC bias.