Project Hub /Healthcare Biomedical & Assistive/Assistive & Prosthetic Tech/Smart Jacket For Social Distancing

Beginner

ARDUINO

₹1,500 – ₹5,000

3 – 6 Hours

Partial Kit

Smart Jacket For Social Distancing

A wearable smart jacket equipped with ultrasonic sensors and a piezo buzzer to alert people nearby to maintain physical distance.

Originally published on ElectronicsForU

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.

Arduino UNO R3 Board (Compatible) – ATmega328P Microcontroller with USB Cable Rs. 999.00
Ultrasonic Sensor Module HC-SR04 Rs. 89.00
Piezo Buzzer (Big) 6-12V Rs. 45.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: 9V Battery + Snap
Jacket

Browse all components

How It Works

The Smart Jacket for Social Distancing is built around an Arduino Uno board, which acts as the central processing unit for the entire wearable system. Powered by a 9V PP3 battery connected via a 2.1mm DC barrel plug, the Arduino continuously polls three HC-SR04 ultrasonic sensors mounted strategically on the exterior of the jacket. Each ultrasonic sensor operates by emitting a high-frequency sound wave and measuring the time it takes for the echo to return after bouncing off a nearby object or person. By calculating this time-of-flight, the Arduino determines the precise physical distance between the wearer and anyone approaching them. The system runs a custom program loaded through the Arduino IDE from the smart_jacket.ino source file. When the software detects that an object has breached a predefined distance threshold, it triggers an audible alert using a piezo buzzer wired to the microcontroller. The buzzer emits a tone or pulsing sound to notify the wearer and those around them that the minimum physical distance has been compromised, prompting individuals to adjust their spacing accordingly.

Why Build This

Develop practical, hands-on experience integrating multiple ultrasonic distance sensors with a single microcontroller for spatial awareness applications.

Design and prototype wearable electronics that combine embedded hardware with textile integration for real-world interactive media solutions.

Implement time-of-flight sensor data processing algorithms to trigger physical output devices like piezo buzzers based on dynamic environmental thresholds.

Real-World Application

Maintaining social distancing in crowded environments such as malls, offices, schools, colleges, and hospitals.

Skills You'll Learn

Ultrasonic distance sensing

microcontroller digital I/O interfacing

time-of-flight calculation

piezo buzzer tone generation

wearable electronics prototyping

basic power management

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Technology Tags

ARDUINO

ULTRASONIC SENSOR

HC-SR04

PIEZO BUZZER

WEARABLE ELECTRONICS

PROXIMITY ALERT

Frequently Asked Questions

How do the HC-SR04 ultrasonic sensors measure distance?

They emit an inaudible high-frequency sound pulse and measure the time it takes for the echo to bounce back from a nearby person or object.

Can I power the Arduino Uno using the 9V PP3 battery for long periods?

PP3 batteries have a relatively low capacity and are best suited for short prototyping sessions; for extended daily use, an external battery pack or rechargeable power source is recommended.

How do I upload the smart_jacket.ino code to the board?

You will need to connect the Arduino Uno to a computer via a USB cable, open the file in the Arduino IDE, select the correct board and port settings, and click the upload button.

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-00473