Recently, ‘Liquid crystal display (LCD) vs. organic light-emitting diode (OLED) display: who wins?’ has become a topic of heated debate. In this review, we perform a systematic and comparative ...

A compact Arduino-based system that reads ambient light levels using an LDR sensor, displays the measured illuminance (in lux) on a 16×2 LCD, and provides a color-coded visual indicator via an RGB LED ...