Large Liquid Crystal Light Valve - Controllable Shutter Glass Shipping:4-6 Days which is why we consider

which is why we consider this particular part very precise

The sleep current of the ESP32 chip is less than 5μA

M4 or similar

* Two Programmable GPIOs

Large Liquid Crystal Light Valve - Controllable Shutter Glass Shipping:4-6 Days which is why we considerWhat do you get when you power a layer of liquid crystal material sandwiched between two sheets of glass? A Liquid Crystal Light Valve (aka to LCD Controllable Black out Panel)! They're often used for electric welding helmets because they can protect the welder's eyes from the bright sparks. Or if you aren't a welder they can be used to provide a "reveal" effect for your project, as you can control the opaqueness of the LCD. A Liquid Crystal Light