It's a full-color alternative (well, six-color, but more on that later), packing eight additional GPIO pins, three separate buttons, a temperature and humidity sensor, and even support for a micro SD ...

Abstract: A high-sensitivity fiber-optic microcavity relative humidity (RH) sensor with a silicon-based sulfide thin film is presented. With the magnetron sputtering technique, a 280-nm MoS2 film is ...