Arduino LDR Light Sensor Kit: Build Your Own Lux Meter and Learn Analog Sensing

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Turn ambient light into a precise numerical reading on an LCD screen. This kit puts a working lux meter in your hands, letting you measure everything from dim corners to bright sunlight. It’s a hands-on introduction to analog sensor input, voltage division, and real-time data display—perfect for school experiments or science fair demonstrations.

What You'll Build

You’ll assemble a circuit that reads an LDR (light-dependent resistor), converts its resistance to a voltage, and displays the calibrated lux value on a 16x2 LCD. The result is a portable, battery-powered instrument that reacts instantly to changes in light—showing exactly how smart lights and camera sensors detect brightness.

What You'll Learn

• Read analog voltages from an LDR using Arduino Uno
• Design and analyze a voltage divider circuit with fixed resistors
• Map raw sensor values to meaningful lux units through calibration
• Interface a 16x2 LCD via I2C backpack for clear data output

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is an excellent fit for ATL Tinkering Lab students exploring sensor basics, CBSE Class 11–12 physics project work, and first-year B.Tech ECE/EEE lab sessions. It’s also used in Smart India Hackathon prototypes and by hobbyists who want a ready-to-assemble light measurement tool. If you’re teaching analog electronics or presenting a science exhibition, this kit gives you a working model without the hassle of sourcing parts from multiple shops.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.