Geolinker ESP32 GSM & GPS Cellular IoT Development Board (ESP32-S3 + SIM868) with Airtel M2M SIM - 3 Months Free IoT Plan

Geolinker GL868 is a all-in-one ESP32 GPS + GSM IoT Development Board to build powerful IoT tracking and monitoring systems with this ESP32-S3 + SIM868 based development board, designed for GPS tracking, GSM communication, and cloud connectivity all in one compact PCB. 

• Comes with IoT SIM Card (3 Months FREE Plan), ready to deploy out of the box
• No external modules required, fully integrated GSM + GPS solution
• On-board antenna design for GSM+GPS (no external antenna needed)
• Open source circuit with tutorials and documentation backed by CircuitDigest

Getting Started(Activate SIM card | Start tracking):

The below wiki page and video provides all the required details for you to understand and get started with the GL868 Geolinker Development Board. 

Wiki Page: https://circuitdigest.com/wiki/geolinker-esp32-sim868-cellular-iot-gps-tracking-development-board/

Key Features:

1. ESP32-S3 Powered - Dual-core 240MHz MCU with WiFi + BLE support
2. Built-in GPS (GNSS) - Supports GPS, GLONASS, and BeiDou for accurate tracking
3. GSM / GPRS Connectivity (SIM868) - Send data via HTTP, SMS, or calls
4. IoT SIM Included (3 Months Free) - 120MB/month data | 100 outgoing minutes | 200 SMS
5. Easy activation via KYC
6. Battery + Charging Circuit Onboard
7. LiPo charging + power management built-in
8. Motion Detection (Accelerometer) - Wake-on-motion for ultra low power tracking
9. Onboard RGB + Status LEDs
10. USB-C Programming & Charging

Perfect For

• GPS Tracking Systems
  
• Vehicle Tracking / Fleet Management
  
• Asset Tracking Devices
  
• Anti-theft Systems
  
• Remote Monitoring Projects
  
• IoT Prototyping with Cellular Connectivity

Why This Board?

Unlike traditional setups, where you combine: ESP32 + GSM module + GPS module + power circuit

This board integrates everything into one ready-to-use platform, saving:

• Wiring complexity
• Development time
• Power optimization effort

What’s Included

• ESP32 GPS GSM Development Board
• IoT SIM Card (3 Months Free Plan)
• Onboard GSM + GPS Antenna
• USB-C Interface

Developer Friendly

• Arduino IDE / PlatformIO compatible
• Open-source hardware & library support
• High-level APIs for:
  • GPS tracking
  • HTTP data upload
  • SMS commands
  • Call handling

Geolinker GL868 is proudly designed and made in India as an alternative for TTGO T-call and other ESP32 GSM dev boards.