Microcontroller connnected to GPS, modem and accelerometer

Discussion in 'The Projects Forum' started by Harsom, Nov 27, 2014.

  1. Harsom

    Thread Starter New Member

    Nov 27, 2014
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    Hi guys

    Im trying to find some HW for a project in which I want to take data from GPS and accelerometer and send to my server via modem (3G). I have seen SoC solutions (e.g. Telit) but really expensive! So far it has not been possible for me to find a cheap SoC solution (<50$).
    I've also seen http://wm.sim.com/ but it's not easy to buy the chip from this supplier.
    It has to be an embedded solution and I want it to be as cheap as possible.
    Unfortunately I cannot find any good and cheap modem chips to buy on the market. I know there are a lot of Chinese and asian suppliers but I dont know how to approach this.
    Can you please give me any advice on where or how I can find stand-alone modems to connect to a microcontroller?

    Thanks.
     
  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
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    3G modem? Don't you need a plan with cell phone company to use their 3G network?
     
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
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  4. Harsom

    Thread Starter New Member

    Nov 27, 2014
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    No plan required. Only working SIM which I have.
     
  5. shteii01

    AAC Fanatic!

    Feb 19, 2010
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    So. How do you interface sim card with a 3G modem chip?
     
  6. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    $50 goal seems a bit unrealistic even excluding the GSM part. The last time i checked just a crappy GPS chip without antenna was about $20. Now count in the price of the PCB in single quantity, antenna, perhaps a battery, case and a bit of this and that, and you get over your budget fast.
     
  7. shteii01

    AAC Fanatic!

    Feb 19, 2010
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    From looking around, gps and 3g is not going to happen for 50 USD.

    Here is interesting option if you are using Arduino: http://www.cooking-hacks.com/3g-gprs-shield-for-arduino-3g-gps
     
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