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  • Good for embedded usage

    posted by Bertrix on 08/12/2011
    5 0

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:

    I have modded this gprs module for TTL usage by removing the usb to serial chip and connecting wires straight to the pcb. The module seems to have an IMEI different from 000000 but not sure if unique, check IMEI using: AT+CGSN

    GPRS is very easy to use, just send

    AT+CGATT=1 (Attach to gprs network, power consumption rises)

    AT+CGDATA="PPP" (Open ppp session)

    Now start pppd and your connection is up and running.

    Send sms is easy too:

    AT+CMGS="0123456789"

    type message, end with ctrl+z

    Cons:

    None that I have found, maybe it has no built in tcp stack but this is obvious seeing the normal application. Also it does not do 3g or edge but this is clearly stated in the description.

    Bottomline:

    Good gsm module for using with embedded projects. Most cell phones nowadays do tethering so I'm not sure how useful it is to just use it with a computer.

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