Solar Panel Tracker Kit with Arduino Uno & LDR: Build an Automatic Night Light Circuit

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 introduces the magic of light-controlled circuits: a light-dependent resistor (LDR) senses darkness and instantly switches on a row of bright white LEDs via a BC547 transistor. You’ll create your own automatic night lamp — a real switching circuit that mimics how garden lights, streetlights, and security systems work, all on a simple breadboard with Arduino as the brain.

What You'll Build

By the end of this 2-3 hour build, you’ll have a functioning lamp that glows automatically as dusk falls and turns off when the room brightens. Place it on your study desk, corridor, or balcony and watch your first sensor-actuator project come alive, completely hands-free.

What You'll Learn

• How an LDR’s resistance changes with light and how to read it using Arduino’s analog input
• Transistor as a switch: driving multiple LEDs with a BC547 transistor from a microcontroller pin
• Breadboard wiring techniques — connecting power rails, jumpers, and components without soldering
• Writing and uploading a simple Arduino sketch that sets a light threshold for automatic switching

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for young makers aged 8–15, this kit fits perfectly into CBSE Class 6–10 science projects, ATL Tinkering Labs, and school exhibitions. It’s also an ideal first electronics build for B.Tech ECE/EEE students exploring sensor interfaces or hobbyists wanting a quick win in home automation.

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.