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Recent content by sa4250mnpo70

  1. sa4250mnpo70

    How to use Simcom SIM900 Modem and GPRS...

    Sorry cant help you there... am not into ARM... Do let me know how you did it, once you are able to do it.
  2. sa4250mnpo70

    Need help with SIM900A PCB

    Download the SIM900A datasheet and look for ATS0 command For eg. ATS0=10<CR><LF> will automatically answer your calls after 10 rings... here <CR> means Carriage Return and <LF> means LINE FEED
  3. sa4250mnpo70

    How to use Simcom SIM900 Modem and GPRS...

    I have solved the GPRS connectivity problem that I was facing and the reason for my initial post... I am able to connect using GPRS and send data to my web server... Till now I have only send data.. or text... to a server... but probably the same can be done for an image... you need to convert...
  4. sa4250mnpo70

    Need help with SIM900A PCB

    Kindly suggest a suitable converter for the action... Thanks
  5. sa4250mnpo70

    Need help with SIM900A PCB

    Thanks.. but i am looking for a PCB footprint for ARES software of Proteus. By the way which software did you use and how to open this file?
  6. sa4250mnpo70

    Need Help with GPRS and SIM900... unable to connect to remote server

    Hello everyone I am stuck with this GPRS thing.... I am totally new here... Please help I need to connect to a remote server and send some data using SIM900 and GPRS... I am using the following commands and getting the proper reply... but i keep getting this error no matter what I do when i...
  7. sa4250mnpo70

    SIM900 AT+CGATT=1 returns ERROR sometimes and keep giving continiously

    Can you provide the circuit diagram of your SIM900 and ATmega connection... also the full code that you are using...??
  8. sa4250mnpo70

    Multiple Key Press using AVR ATmega128 and 4x4 keypad

    Hello everyone.... I have bought a 4x4 matrix keypad and wish to implement it in my project involving AVR ATmega128. I have successfully tested it and am able to detect SINGLE key-presses. Next I wanted to implement mobile-phone type keypad using my 4x4 keypad where suppose i press a key one...
  9. sa4250mnpo70

    Need help with SIM900A PCB

    Hello there.... I am working on a development board and need to interface SIM900A module with MCU... the problem I'm facing is I am unable to locate an appropriate 68pin package for SIM900A from the library. I am using Proteus ARES software for PCB designing. Anyone already having a PCB layout...
  10. sa4250mnpo70

    How to use Simcom SIM900 Modem and GPRS...

    Guys I need your help.... Please tell me what package type is SIM900. By Package type I mean... TQFP68, PDIP40 etc. I know it is (0.94 inches x 0.94 inches x 0.12 inches) with L-shaped contacts on four sides so that they can be soldered both on the side and at the bottom. Please help... need...
  11. sa4250mnpo70

    How to use Simcom SIM900 Modem and GPRS...

    Thank you namlooc Actually I have read through those PDF you suggested. I need something for beginners which can explain me everything about TCP/IP, GPRS, FTP communication etc. in relatively simple English. I do not belong to Computer Science. My field of studies is Electronics so am little...
  12. sa4250mnpo70

    How to use Simcom SIM900 Modem and GPRS...

    Thank you namlooc. :roll: I will surely try it and hope it works for me too. By the way :?: could you please refer me to a site or book where I can get more knowledge about GSM Modems and their practical uses? For example some GSM and Microcontroller based example codes for beginners to...
  13. sa4250mnpo70

    How to use Simcom SIM900 Modem and GPRS...

    Hello... I am new to this forum and this is my first post. I recently bought Simcom SIM900 Modem and was successful in using most of the AT Commands to make calls and send SMS or search phonebook etc. I have never used this or any similar module before and am not too familiar with all the AT...

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