How to Make GPS Tracker

Introduction to GPS Tracker with ESP8266, SIM800L, and SOS Alert System

In today's world, safety and security are crucial concerns, and having a reliable emergency tracking system can be a lifesaver. This project presents a GPS Tracker with ESP8266, SIM800L, and an SOS Alert System, designed to send real-time location updates during emergencies.

This system integrates the ESP8266 Wi-Fi module, SIM800L GSM module, and NEO-6M GPS module to provide precise location tracking. Two push buttons serve as emergency triggers—one for sending an SOS message with GPS coordinates and the other for making an SOS call to a predefined number. This makes it ideal for personal safety, vehicle tracking, or emergency response applications.

The device is compact, low-cost, and can be easily deployed in various scenarios, ensuring that help is just a button press away in critical situations.

Supplies Needed for GPS Tracker with ESP8266 and SIM800L

To build this GPS Tracker with SOS Alert System, you'll need the following components:

Main Components

✅ ESP8266 (NodeMCU or ESP-01) – Microcontroller for processing and Wi-Fi connectivity

✅ SIM800L GSM Module – Sends SMS and makes calls

✅ NEO-6M GPS Module – Provides real-time GPS location data

✅ Two Push Buttons – One for SOS call, one for SOS message

Power & Battery

Lithium-ion Battery (3.7V or 18650) – Portable power source

TP4056 Battery Charging Module – For charging and battery protection

Step-Up Module (MT3608 or similar) – Boosts voltage if needed

Other Components

16x2 LCD with I2C (Optional) – For displaying status and GPS data

Buzzer (Optional) – Alerts during an SOS event

LEDs & Resistors (1kΩ, 10kΩ) – Indication and pull-down resistors for buttons

Breadboard & Jumper Wires – For easy prototyping

Micro USB Cable – For programming ESP8266

Small Plastic Enclosure – To make Project Portable

Rocker Switch- It will work as a main power switch

Tools Required

️ Soldering Iron & Solder Wire – For assembling connections

️ Multimeter – For testing voltage and continuity

https://github.com/N-08Labs/GPS-Tracker

Watch the Full Project video on YouTube

https://youtu.be/eqdB_w8lpjM

Cut holes for SIM card, Type-C input for Charging the battery, 2 holes for the push switches, 1 for rocker switch, and one for antenna

Glue all the components in the enclosure as the holes we have cut previously

If you have some knowledge in electronics you can surely solder all the components just by seeing the circuit.

If you are new to this please consider watching my YouTube Video.

Functions-

1. Push the first button to make the call to the given phone number in the code
2. Push the second button to send SOS SMS with location of device with Google maps link
3. Send Text SMS "call" to the Phone Number of the SIM inserted in the Device from the phone number given in the code to receive call from the device
4. Send Text SMS "locate" to the Phone Number of the SIM inserted in the Device from the phone number given in the code to receive Location link from the device