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  • Localizer with SIM908 module

    The device is based on a GSM/GPRS module with included GPS. Its main function is to detect and communicate its own geographical position using, on the choice, the cellular phone reference system or the GPS. Its small...

    • Posted 7 years ago
    • 185
  • How to find the location with GSM cells

    Discover how to find the coordinate from the GSM cells!!   The PHP code to find the coordinates from GSM cells  

    • Posted 8 years ago
    • 13
  • How it works
    Mini GSM localizer without GPS

    It’s no the first time that we present a localizer without GPS. We remake the old device with the cheaper SimCom module SIM900. In the previous post we present the GSM section and now we can present...

    • Posted 8 years ago
    • 68
  • GSM localizer without GPS – Part 1
    Introduction

    Download the article         Do you still think you need GPS to know where a person or vehicle is? Well, here is some news for you: by using cellular network data and properly querying Google,...

    • Posted 9 years ago
    • 19
  • GSM localizer without GPS – Part 2
    Our Project

    Regardless of how Google has compiled its database, once we discovered how cell phones using Google Maps Mobile send their requests, we immediately thought of employing that functionality to build a specific remote localizer, which, unlike those...

    • Posted 9 years ago
    • 0
  • GSM localizer without GPS – Part 3
    GSM/GPRS Module

    The module used in our localizer is the Enabler IIIG GSM0308 by Enfora, one of the smallest yet best performing modules of this type currently available. The device, which utilizes a chipset made by Texas Instruments, is...

    • Posted 9 years ago
    • 2
  • GSM localizer without GPS – Part 4
    Connecting to Google

    In order to be able to associate a GSM cell with its geographic coordinates, we utilize a Google Maps Mobile function, which is not documented, though. Before doing this, however, we need to know which cell the...

    • Posted 9 years ago
    • 0
  • GSM localizer without GPS – Part 5
    Schematic

    The circuit our localizer is based on consists only of a quad-band GSM/GPRS module interfaced with a a microchip microcontroller which, after initializing the I/Os and UARTs it has at its disposal, puts the main program in...

    • Posted 9 years ago
    • 0
  • GSM localizer without GPS – Part 6
    Assembly

    Our localizer is definitely simple, yet it must be built with care, as all of its components are SMD. Once the two-sided board is ready, be sure you have a very fine-pointed welder of up to 20...

    • Posted 9 years ago
    • 0
  • GSM localizer without GPS – Part 7
    Settings and Commands

    All configurations can be set remotely using any cell phone; what follows is a description of how settings and commands work. Let us start with the list of numbers that can be used to request location data:...

    • Posted 9 years ago
    • 0