Project Hub /IoT & Connected Devices/Asset Tracking & GPS/Building Human Safety Device | Code and Circuit Available

Intermediate

INDUSBOARD

Project Specific

3 – 6 Hours

Partial Kit

Building Human Safety Device | Code and Circuit Available

A compact human safety device built using an IndusBoard Coin for detecting falls, monitoring temperature, and sending emergency SOS messages with GPS coordinates via GSM.

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.

Piezo Buzzer (Big) 6-12V Rs. 45.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
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 Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Other Dev Board (Indusboard / Maixduino / misc)
GSM / GPRS SIM800L
GPS Module
3.3V

Browse all components

How It Works

The Human Safety Device is built around the IndusBoard Coin microcontroller platform, which coordinates data acquisition, processing, and emergency communication. To monitor user safety, the system integrates motion and orientation tracking using the onboard accelerometer and magnetometer features supported by the STM LSM303 library. When an abnormal motion pattern—such as a sudden impact or fall—is detected, the microcontroller initiates an emergency routine. Concurrently, environmental data like temperature can be monitored. To pinpoint the user's location, the L86 GPS module interfaces with the IndusBoard Coin to acquire accurate geographic coordinates using the Adafruit GPS library. Once an emergency condition or fall is verified, the system triggers an audible alert via the connected buzzer to draw immediate attention. Simultaneously, the IndusBoard Coin communicates with the SIM800L GSM module over serial lines to compose and dispatch an SMS emergency message containing the live GPS coordinates to pre-configured contacts. Powering the entire system is a compatible 3.3V or 3.7V battery, allowing the device to remain portable for personal asset tracking and safety applications. An optional manual switch can also be incorporated to let the user trigger an SOS message manually.

Why Build This

Develop a functional IoT safety wearable capable of automated fall detection and real-time emergency text messaging for vulnerable individuals.

Gain hands-on engineering experience integrating cellular communication, satellite navigation, and inertial sensing modules into a single embedded system.

Apply undergraduate-level firmware development skills to process sensor interrupts and manage power requirements for portable battery-operated hardware.

Real-World Application

Personal safety and emergency response for elderly individuals, children, and patients, providing fall detection, temperature monitoring, and real-time GPS tracking via SMS.

Skills You'll Learn

GPS data parsing

GSM serial communication

inertial sensor integration

interrupt handling

power management

buzzer control

Safety Precautions

Ensure correct battery voltage (3.3V or 3.7V) and proper wiring connections for the GSM and GPS modules to avoid component damage.

Technology Tags

INDUSBOARD COIN

SIM800L GSM

L86 GPS

MEMS SENSOR

FALL DETECTION

TEMPERATURE SENSOR

IOT

MICROCONTROLLER

EMBEDDED SYSTEMS

Frequently Asked Questions

Why do I need both a GPS module and a GSM module?

The L86 GPS module is responsible for calculating your precise geographical coordinates, while the SIM800L GSM module uses a cellular network to transmit those coordinates via SMS to emergency contacts.

Can I trigger an emergency message manually?

Yes, the project supports an optional switch that can be wired to the IndusBoard Coin, allowing the user to manually send an SOS alert if needed.

What kind of battery should I use for this project?

You must use a 3.3V or 3.7V battery that is properly matched to the power requirements of the IndusBoard Coin and connected wireless modules to prevent component damage.

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-01150