DIY Arduino Project: Using LDR (Light Dependent Resistor) to Detect Light Levels
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Introduction: In this tutorial, we will learn how to implement an LDR (Light Dependent Resistor) with an Arduino to sense light levels. The LDR varies its resistance depending on the amount of light incident on it, and thus it can be used in different applications such as automatic lighting, light sensors, and so on ! Components Required: Arduino board (Uno, Nano, etc.) LDR (Light Dependent Resistor) 10k Ohm Resistor Breadboard Jumper wires USB cable for Arduino programming Circuit Diagram: Arduino code int ldrPin = A0; int ldrValue = 0; void setup() { Serial.begin(9600); } void loop() { ldrValue = analogRead(ldrPin); Serial.println(ldrValue); delay(500); } Circuit Connections (Steps): Step-by-Step Wiring Instructions: Connect one terminal of the LDR to the 3.3 V pin of the Arduino. C...