Project Hub /Security Surveillance & Defense/Intrusion Detection Systems/Real-Time Motion Detection with XIAO ESP32 WhatsApp Alert System

Beginner

ESP32

₹500 – ₹1,500

3 – 6 Hours

Complete Kit

Real-Time Motion Detection with XIAO ESP32 WhatsApp Alert System

Build a compact motion detection system using a Seeed Studio XIAO ESP32-S3 and an IR motion sensor that sends instant WhatsApp notifications via the CircuitDigest Cloud.

Originally published on CircuitDigest

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

ESP32-C3 Development Board with Berg Pins - Unsoldered Rs. 750.00
PIR Motion Detector Sensor Module HC-SR501 Rs. 153.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Cable for Arduino Nano (USB 2.0 A to USB 2.0 Mini B) 30cm Rs. 69.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

Browse all components

How It Works

The Real-Time Motion Detection with XIAO ESP32 WhatsApp Alert System operates by integrating a low-power microcontroller with an infrared motion sensor to monitor physical environments and communicate changes over the internet. At the core of the circuit is the Seeed Studio XIAO ESP32-S3 development board, which features built-in Wi-Fi capabilities. Connected to the microcontroller is an IR motion sensor module using jumper wires routed through a breadboard for stable connections. The IR motion sensor continuously scans its field of view for changes in infrared radiation, which typically occur when a human or animal moves within its detection zone. When motion is detected, the sensor outputs a digital high signal to one of the GPIO pins on the XIAO ESP32-S3. Upon receiving this trigger, the ESP32-S3 executes a programmed routine in the Arduino IDE that leverages its Wi-Fi stack to connect to a local wireless network. It then transmits an HTTP request containing an authorization payload to a CircuitDigest Cloud account using a specific API key. The cloud service processes this request and interfaces with the WhatsApp API gateway to immediately dispatch an instant notification message to the user's designated phone number. Power is supplied to the entire assembly via a standard USB cable connected to the development board.

Why Build This

Design a practical IoT security device suitable for undergraduate engineering projects involving remote monitoring and wireless telemetry.

Implement cloud-based API integrations to bridge physical sensor inputs with real-time messaging platforms like WhatsApp.

Deploy a low-cost, compact intrusion detection system for unauthorized entry alerts and room occupancy tracking.

Real-World Application

Home security monitoring, unauthorized entry alerts, room occupancy tracking, and remote asset surveillance.

Skills You'll Learn

Microcontroller GPIO interfacing

digital sensor integration

Wi-Fi network configuration on ESP32

HTTP client requests

cloud API integration

Safety Precautions

Verify the operating voltage of your IR motion sensor and ensure it matches the 3.3V logic level of the XIAO ESP32-S3 to avoid damaging the components.

Technology Tags

ESP32

WIFI

IOT

IR SENSOR

CLOUD API

HTTPS

C++

ARDUINO

Frequently Asked Questions

Can I use any microcontroller board for this project?

This specific project requires the Seeed Studio XIAO ESP32-S3 because it has built-in Wi-Fi capabilities essential for connecting to the internet and sending cloud alerts, along with compatible 3.3V logic levels.

Do I need a paid subscription to the CircuitDigest Cloud to receive WhatsApp alerts?

No, you can utilize the cloud account and API key provided for the project setup to handle the webhook or messaging integration as outlined in the software requirements.

How is the circuit powered during operation?

The circuit is powered primarily through the USB cable connected directly to the XIAO ESP32-S3 development board, which in turn supplies the appropriate operating voltage to the breadboard and connected IR motion sensor.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

PRJ-01475