Geolinker ESP32 GSM & GPS Cellular IoT Development Board (ESP32-S3 + SIM868)

Build powerful GPS tracking and cellular IoT applications with the Geolinker GL868, an all-in-one development board that combines the performance of the ESP32-S3, SIM868 GSM/GPRS, and GNSS GPS into a single compact platform.Unlike traditional IoT setups that require separate ESP32, GSM, GPS, and power management modules, the GL868 integrates everything into one ready-to-use board, allowing faster development, cleaner wiring, and more reliable deployments.🎥 Getting Started Video Documentation & Wiki: Geolinker GL868 Official WikiKey FeaturesESP32-S3 Powered – Dual-core 240MHz processor with WiFi and Bluetooth LE support.Integrated GSM Connectivity – Built-in SIM868 module for SMS, HTTP, GPRS, and voice communication.Multi-Constellation GPS – Supports GPS, GLONASS, and BeiDou for accurate location tracking.Battery Charging Circuit – Onboard LiPo charging and power management system.Motion Detection Support – Integrated accelerometer enables wake-on-motion functionality.USB Type-C Interface – Convenient programming, debugging, and charging.Integrated Antennas – Built-in GSM and GPS antennas eliminate the need for external antennas.Developer Friendly – Compatible with Arduino IDE, PlatformIO, and ESP-IDF.Why Choose Geolinker GL868?Traditional GPS tracking projects often require multiple hardware modules:ESP32 ControllerGPS ModuleGSM ModuleBattery ChargerPower Management CircuitWith the Geolinker GL868, everything is integrated into a single board, helping you:Reduce wiring complexityAccelerate development timeImprove reliabilityReduce overall project costOptimize power consumption Perfect ForVehicle Tracking SystemsFleet Management SolutionsAsset Tracking DevicesPersonal GPS TrackersAnti-Theft SystemsLogistics MonitoringRemote Monitoring ProjectsIndustrial IoT ApplicationsAgricultural Monitoring SystemsCellular IoT PrototypingTechnical SpecificationsMicrocontrollerESP32-S3ProcessorDual-Core Xtensa LX7Clock SpeedUp to 240MHzWireless ConnectivityWiFi + Bluetooth LECellular ModuleSIM868 GSM/GPRSGNSS SupportGPS, GLONASS, BeiDouUSB InterfaceUSB Type-CBattery SupportSingle Cell LiPoCharging CircuitIntegrated OnboardMotion DetectionAccelerometer SupportedDevelopment PlatformsArduino IDE, PlatformIO, ESP-IDFPackage Includes1 × Geolinker GL868 ESP32-S3 GPS GSM Development BoardIntegrated GSM AntennaIntegrated GPS AntennaUSB Type-C InterfaceDeveloper FriendlyOpen-source hardware designExtensive tutorials and documentationGPS tracking examplesHTTP and cloud connectivity supportSMS command implementationVoice call handling supportReady for custom IoT dashboardsDesigned & Made in IndiaThe Geolinker GL868 is proudly designed and manufactured in India, providing a powerful alternative to TTGO T-Call and similar ESP32 GSM development boards while offering integrated GPS tracking and cellular IoT connectivity in a compact form factor.

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