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    [PIC] Unable to upgrade sim 900 firmware for email functions

    You need to leave the baud rate at its default of 115200 and make sure yo hold down the PWR button during the entire sequence. You will find much more information in the following thread: https://www.edaboard.com/threads/182804/
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    [SOLVED] microcontroller with buil-in ethernet and 4 serial ports

    I would use an FPGA-based SOC with UARTS built in the FPGA fabric. That way you can have as many UARTS as you need. My suggestion is the Microsemi SmartFusion AFS050. Dev tools are free and design should be straightforward. The micro is a Cortex-M3 @ 100MHz
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    help me to find simcom sim908 pinouts

    This any help?
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    Help needed for GSm modem.

    Seems a reasonable thing to do, they are not especially different. The SIM300 has been obsolete for over a year now, so you will find the '900 easier to get.
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    gsm modem sim900 problem

    Here are the files uploaded again. If you still cannot download them IM me with your e-mail address so I can send them directly
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    gsm modem sim900 problem

    I have sent the files to both e-mail addresses. Please let me know if they arrive
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    gsm modem sim900 problem

    Hi Noman Apart from the voltages on the I/O, the main and most annoying difference is that the sim 900 only accepts AT commands in upper case. I have attached a couple of file which may be of use.
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    interfacing 32 bit microprocessor with gps

    Hi Radhikamani All GPS receivers transmit their data using the NMEA message protocol which, from the processor view, is a standard modem interface 48Kbps, 8 bits, no parity, 1 stop bit. Some newer GPS devices (such a Origin) also output data on SPI and/or I2C but still retain the standard UART...

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