Arduino Uno Visitor Announcement Kit: Build a Smart Door Greeter That Welcomes Guests Automatically

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

Imagine your home greeting every visitor with a warm, custom message the moment they step onto your porch. This Arduino Uno–based kit lets you build exactly that: a fully functional visitor detection system that uses a PIR motion sensor to instantly trigger a pre-recorded audio message through a speaker. No soldering, no scattered component hunting — just a clean, guided build from start to finish.

What You'll Build

You'll assemble a compact smart announcement unit that mounts near your entryway. When the HC-SR501 PIR sensor detects motion at the gate, the Arduino signals the DFPlayer Mini to play a welcome .mp3 file stored on the microSD card. The audio passes through the PAM8403 amplifier and out of the 3W speaker, delivering crisp, clear sound. It’s a real-world smart home project that works every time someone arrives.

What You'll Learn

• How to interface a HC-SR501 PIR sensor with Arduino Uno
• Programming DFPlayer Mini to play audio from a microSD card
• Amplifying audio signals using the PAM8403 module
• Wiring and testing a complete embedded system on a breadboard

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11–12 students building electronics projects for science exhibitions, B.Tech ECE/EEE students tackling mini-project submissions, and Smart India Hackathon teams prototyping smart home ideas. ATL Tinkering Lab mentors will find it an ideal intermediate kit that ties together sensors, microcontrollers, and audio output in one cohesive build.

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.