Project Hub /Audio Displays & Interactive Media/LED Matrix & Cube Displays/Build a Real-Time GPS Tracker with Raspberry Pi Pico & SIM800L GSM Module

Beginner

RASPBERRY PI

₹1,500 – ₹5,000

6 – 12 Hours

Partial Kit

Build a Real-Time GPS Tracker with Raspberry Pi Pico & SIM800L GSM Module

Learn how to build a real-time GPS tracker using a Raspberry Pi Pico, SIM800L GSM module, and Neo-6M GPS module with offline data sync capabilities.

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.

Raspberry Pi 3 - Model B+ 1.4Ghz 64-bit quad-core Processor with 1 GB Ram (Original) Rs. 5,400.00
ADIY FLY Pico RP2040 Basic Board (Type C) Out of stock
10pcs 5mm RED Diffused Light Emitting Diodes - LEDs Set Rs. 39.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
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

We don't carry yet: GSM / GPRS SIM800L
GPS Module

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How It Works

This real-time GPS tracking system integrates several key hardware components powered by the Raspberry Pi Pico microcontroller, programmed using the Arduino IDE with the RP2040 board package. At the core of the location-sensing subsystem is the Neo-6M GPS module, paired with an external GPS antenna to acquire geographic coordinates by communicating with overhead satellites. Once raw positional data is gathered, the system processes it on the Pico and interfaces with a SIM800L GSM module equipped with a 2G-capable SIM card and an external GSM antenna. This cellular module allows the device to transmit location packets remotely or sync data offline depending on network availability. To provide immediate visual feedback of the system's operational status—such as fix acquisition, transmission state, or power status—a set of three discrete LEDs (Red, Yellow, and Green) are wired into the circuit using a breadboard and jumper wires. Finally, the GeoLinker API is utilized on the software side to handle and map the incoming coordinates, creating a complete end-to-end telemetry and tracking pipeline.

Why Build This

Design and deploy functional Internet of Things (IoT) hardware suitable for real-world asset monitoring, vehicle tracking, and delivery logistics.

Gain practical undergraduate-level experience interfacing cellular GSM and satellite GPS modules with a modern microcontroller architecture.

Implement wireless data transmission pipelines that combine embedded firmware with cloud-facing APIs like GeoLinker for remote telemetry.

Real-World Application

Vehicle tracking, asset monitoring, pet locators, and delivery logistics.

Skills You'll Learn

UART serial communication

GPS data parsing

cellular modem AT commands

API integration

power management for high-current peripherals

LED status indicator design

Safety Precautions

SIM800L is sensitive to voltage and requires a regulated 3.7V - 4.2V supply with sufficient current (~2A peak). Always use a dedicated LiPo or buck converter if the module lacks an onboard regulator.

Technology Tags

GPS

GSM

GPRS

SIM800L

NEO-6M

IOT

UART

CLOUD

TRACKING

MICROCONTROLLER

Frequently Asked Questions

Why does the SIM800L module require a dedicated power supply instead of drawing power directly from the Raspberry Pi Pico?

The SIM800L draws high current spikes (up to 2A) during cellular network transmission, which exceeds the safe output current capacity of the Pico's onboard regulator and can cause system resets or brownouts.

Do I need an active cellular data plan for this project to work?

Yes, the SIM800L module requires a 2G-capable SIM card with an active service plan to transmit data over cellular networks to the GeoLinker API.

Why is an external GPS antenna necessary if the Neo-6M module already has an onboard ceramic antenna?

An external GPS antenna provides significantly better signal reception, especially when testing indoors or inside metallic enclosures like vehicle chassis where internal antennas struggle to get a clear satellite lock.

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-01249