Build a Direction-Aware Staircase Light Sequencer with Arduino Mega and Relays

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

Stepping onto a staircase should feel intuitive, even in the dark. This kit lets you build a system where two PIR sensors automatically detect movement at either end and trigger a cascading sequence of 12 white LEDs—following your exact direction up or down. It’s a showpiece for home automation assignments, hackathon demos, or transforming a hostel corridor into a smart walkway.

What You'll Build

You will assemble a fully functional, 12-step sequential stair lighting circuit powered by an Arduino Mega. When someone approaches the bottom, the lights illuminate step by step from bottom to top; approach from the top, the sequence reverses. Each step is driven by a 5V relay module that toggles a white LED, protected with diodes and resistors for stable operation on a 12V supply. The entire system sits on a prototype PCB, ready to mount on any real staircase.

What You'll Learn

• Interfacing PIR sensors with Arduino Mega and filtering false triggers for reliable direction detection
• Controlling 12 independent relay channels from microcontroller GPIOs to switch high-brightness LEDs
• Writing sequential logic in Arduino IDE that creates a smooth, direction-based lighting wave
• Soldering components onto a PCB prototype board and building a permanent, rugged circuit

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately