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    I am able to send msg through GSM modem. But i am not able to read msg. Somebody plz help me.
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    hello everyone , i am facing a strange situation. i simply sent AT<CR> to gsm modem but in response receive only CR and character A instead of proper response i.e. <cr><lf>ok<cr><lf> already tied...
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    1. I've bought a GSM Modem, containing SIM900 module and successfully able to send AT Commands to it through my PC using Hyperterminal. 2. I also have an 8051 circuitboard with Serial interface and...
  • Interfacing 8051 with a gsm modem
    Sir, i have been allotted a proect on lighting control system using 8051 and a gsm modem so if you could please tell me how could i interface them? Thanks With regards Anuj
  • gsm modem interfacing
    i m unable interface gsm modem kit (st2133) using microcontroller AT89S51 to just send an sms . is it possible to interface with using only 3 pins of uc i.e txd,rxd ,gnd of uc.please send me a sample...