Hello friends, I hope you all are doing great. Today, I am going to share our new LDR Sensor Library for Proteus . An LDR (light dependent resistor, also called a photoresistor) is the simplest light sensor there is: its resistance drops when more light falls on it. Most makers know it from the small blue LDR light sensor module with an LM393 comparator, a blue pot and two outputs, A0 and D0. With this LDR Sensor Library for Proteus , you set the light on the sensor, from a moonlit night to direct sunlight, and your Arduino reads A0 with analogRead() and D0 with digitalRead() , exactly as on a real board. Updates LDR Sensor Library for Proteus Latest version: V1.0 (October 2026, this tutorial) Other light sensors: BH1750 · TCS34725 Helping Tools Serial Monitor Advance : a serial terminal w ...