GPS Tracker using ESP32

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📘 Tutorial Link

👉 GPS Tracker using ESP32

📂 Project Type

🔗 ESP32 Project

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🚀 Features

• Real-time GPS tracking with ESP32 and Neo-6M GPS module
• Cloud-based visualization using GeoLinker API
• Offline data buffering when internet is unavailable
• Automatic re-sync once connection is restored
• Configurable update intervals for optimized performance

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🛠️ Hardware Requirements

Component	Quantity
ESP32 Development Board	1
Neo-6M GPS Module	1
LEDs	2
1kΩ Resistors	2
Breadboard	1
Connecting Wires	As required

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⚙️ How It Works

1. The Neo-6M GPS module fetches latitude, longitude, and time data using NMEA protocol.
2. The ESP32 reads this data over UART (pins IO16/IO17).
3. Data is transmitted to the GeoLinker API via Wi-Fi.
4. If Wi-Fi is unavailable, the ESP32 stores data locally until connectivity is restored.
5. Once reconnected, buffered data is synced to the cloud along with real-time updates.
6. The location is plotted on the GeoLinker map interface for route tracking.

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🔌 Circuit Connection

Pin Mapping Table

ESP32 Pin	GPS Module Pin
3.3V	VCC
GND	GND
IO16 (RX)	TX
IO17 (TX)	RX

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🧠 Troubleshooting

Issue	Possible Cause	Solution
No GPS Fix	Weak satellite signal	Move outdoors or use an active antenna
Wi-Fi not connecting	Wrong SSID/Password	Double-check credentials in code
Data not uploading	Invalid API key	Re-generate and update API key in code
Garbage output from GPS	Baud mismatch	Ensure GPS baud is set to 9600
ESP32 resets	Power instability	Use stable 5V USB supply

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📱 Applications

• Vehicle tracking
• Asset monitoring
• Personal safety devices
• Fleet management systems
• Outdoor navigation experiments

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🔮 Future Enhancements

• Support for GSM/GPRS modules for remote areas
• Integration with Google Maps for visualization
• Data logging on SD card
• Mobile app dashboard for live tracking
• Multi-device fleet tracking support

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🧪 Technical Specifications

Parameter	Value
Microcontroller	ESP32
GPS Module	Neo-6M
GPS Protocol	NMEA
GPS Baud Rate	9600
Connectivity	Wi-Fi (2.4 GHz)
Cloud API	GeoLinker (CircuitDigest Cloud)
Offline Buffer	Up to 20 records
Power Supply	5V (USB)

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🔗 Links

• 📘 GPS Tracker using ESP32
• 📂 ESP32 Project Collection
• 📚 ESP32 with NEO-6M GPS Module
• 📖 Arduino IDE
• 📄 ESP32 Datasheet
• 📄 Neo-6M GPS Datasheet
• 💻 GeoLinker GitHub Repository
• 💻 Project GitHub Repository

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⭐ Support

This project is published on CircuitDigest.
If you found it useful, please ⭐ star the repository and share it with others!

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🔖 Keywords

ESP32 Neo-6M GPS GeoLinker API GPS Tracker IoT GPS ESP32 Project Arduino C++