BH1750 Light Sensor Arduino Kit — Build a Digital Lux Meter That Shows Time-of-Day on OLED

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

This kit puts you in the shoes of a light-sensing engineer. You'll assemble a complete digital lux meter using the BH1750 sensor, which measures ambient light intensity more accurately than a simple LDR. The readings appear in real time on a 0.96-inch OLED, and the system even guesses whether it's morning, noon, or evening based on lux values. It's the perfect way to explore how brightness influences photography, plant growth, or classroom lighting experiments, all without writing complex code from scratch.

What You'll Build

Once assembled, you have a portable lux meter that displays numeric light intensity (in lux) and a human-friendly time-of-day label like “Morning,” “Noon,” or “Evening.” Point the sensor at a window, a desk lamp, or a dark corner and watch the numbers shift instantly. The OLED shows clear, readable data — ideal for science fair displays or demonstrating I2C communication in a CBSE physics project.

What You'll Learn

• Wiring and communicating with an I2C sensor (BH1750) on the Arduino Uno
• Reading precise digital light intensity values and converting them into meaningful units
• Driving a 0.96-inch OLED display using I2C to present real-time sensor readings
• Interpreting lux levels to estimate ambient light conditions (daylight, room light, twilight)

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for beginners aged 10–15, this kit is a natural fit for CBSE Class 11–12 students undertaking physics or electronics projects, ATL Tinkering Lab members building their first sensor display, and B.Tech ECE/EEE first-year students practicing I2C communication. Even curious 8-year-olds with adult guidance can successfully build a working lux meter and feel the thrill of reading real-time light data.

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.