Final year degree project for engineers Final year projects based on microcontrollers
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AT89s51 microcontroller projects Motion control
at89c2051 motor controller and other light projects
Tutorials of microcontroller 8051, A step by step easy to use self learning rapidex

Sunday, July 24, 2011

SMS Based Controlling Machines Using GSM Mobile and microcontroller 8051

SMS Based Controlling Different Industrial Machines Using GSM Mobile and microcontroller 8051
This project (interfacing mobile phone with microcontroller 8051 for machines control through SMS) has many important other applications and can be used to control Switch ON or OFF any machines at far off places using a gsm modem by sending sms through the communication between the mobile and the embedded devices (microcontroller 8051).This remote control of appliances is possible through Embedded Systems. The use of “Embedded System in Communication” has given rise to many interesting applications that ensures comfort and safety to human life. The microcontroller is interfaced with GSM Modem in mobile phone via MAX232 level convertor. The microcontroller project is designed to allow easy use of a mobile phone to control appliances or machines at any far location may be in industry or at home. Using a mobile phone the development of the control system will be carried out using SMS. This will communicate with another mobile phone, which in turn controls the devices attached to microcontroller modules. moving message display using 8051 microcontroller When the action has been carried out then a response is sent to the user. The use of mobile phones to remotely control an appliance control system. The microcontroller would then control the device based on the information given to it.This post also relates to the project of microcontroller interfacing with lcd and gsm to display the msg sent to interfaced gsm,sms based on off control of a motor throgh 8051 micro controller ,methodology of designing a gsm base noticeboard and motor control through sms circuit diagram .

The devices are connected to the 8051 microcontroller using relays and optocouplers. These relay are controlled through software to switch ON or OFF the device as required. For every message received to microcontroller through mobile phone in form of SMS, the controller will check for the valid and pre-define formate. If the message is correct the controller will perform the operation. microcontroller interfacing with lcd and gsm to display the msg sent to interfaced gsm

The hardware board contains microcontroller AT89c52 at the heart of the system. The microcontroller is interfaced with GSM Modem of mobile phone via MAX232 level convertor. It is used to convert RS232 voltage levels to TTL voltage levels. display the message in notice board with the help of mobile 8051 project gsm architecture based motor on and off circuit diagram

The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8K bytes of Flash programmable and erasable read only memory (PEROM). The device is compatible with the industry-standard 80C51 and 80C52 instruction set and pin out. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional non-volatile memory programmer which provides a highly-flexible and cost-effective solution to many embedded control applications.A GSM modem is a wireless modem that works with a GSM wireless network. A wireless modem behaves like a dial-up modem. The main difference between them is that a dial-up modem sends and receives data through a fixed telephone line while a wireless modem sends and receives data through radio waves. Like a GSM mobile phone, a GSM modem requires a SIM card from a wireless carrier in order to operate.controlling machines using gsm mobile sms services
Generally, computers use AT commands to control modems. Reading of message from the SIM card inserted into the modem is done by sending the appropriate AT command to the modem.
The MAX232 is a dual driver/receiver that includes a capacitive voltage generator to supply EIA-232 voltage levels from a single 5-V supply. Each receiver converts EIA- 232 inputs to 5-V TTL/CMOS levels. Each driver converts TTL/CMOS input levels into EIA-232 levels.
SMS Based Controlling Machines Using GSM Mobile and microcontroller 8051 tutorial tracker gps gsm


GSM Modem, which works at RS-232 voltage levels, logic 1 varies from -3 to -15 volts and logic 0 from +3 to +15 volts. The microcontroller which works on TTL logic levels, logic 1 is +5 volts and logic 0 is 0 volts. Therefore to interface the two we use a MAX 232 driver IC.tutorial tracker gps gsm



AT-Command set
The following section describes the AT-Command set. The commands can be tried out by connecting a GSM modem to one of the PC’s COM ports. Type in the test-command, adding CR + LF (Carriage return + Line feed = \r\n) before executing. Table gives an overview of the implemented AT-Commands in this application. The use of the commands is described in the later sections.

AT-Command set overview

The AT Command
Description of Commands
AT
Check if serial interface and GSM modem is working.
ATE0
Turn echo off, less traffic on serial line.
AT+CNMI
Display of new incoming SMS.
AT+CPMS
Selection of SMS memory.
AT+CMGF
SMS string format, how they are compressed.
AT+CMGR
Read new message from a given memory location.
AT+CMGS
Send message to a given recipient.
AT+CMGD
Delete message.

GSM Modem is used to receive message from the authorized user. This GSM modem requires a SIM card from a wireless carrier in order to operate. This SIM number is contact number of the receiving section.
First, the microcontroller have to send “AT” A response "OK" should be returned from the mobile phone or GSM modem. Now the microcontroller will send "AT+CPIN?". The AT command "AT+CPIN?" is used to query whether the mobile phone or GSM modem is waiting for a PIN (personal identification number, i.e. password). If the response is "+CPIN: READY", it means the SIM card is ready for use. After this, various AT commands depending on the used modem’s instruction set are send to modem and responses are received. This process is very useful in testing GSM modems.

Download software/ code written for microcontroller 8051 to interface SMS Based Controlling Machines Using GSM Mobile and
SMS Based Controlling Machines Using GSM Mobile and microcontroller 8051


, the AT89S52 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning. The Power-down mode saves the RAM con-tents but freezes the oscillator, disabling all other chip functions until the next interrupt. In this project MODEM is communication with the microcontroller through serial port, the microcontroller will send the commands to the modem through RS 232.and the data is read through serial port therefore to make compatible computer serial port with microcontroller serial port we are using the RS 232 converter.A GSM network is composed of several functional entities, whose functions and interfaces are specified. Figure 1 shows the layout of a generic GSM network. The GSM network can be divided into three broad parts. The Mobile Station is carried by the subscriber. The Base Station Subsystem controls the radio link with the Mobile Station. The Network Subsystem, the main part of which is the Mobile services Switching Center (MSC), performs the switching of calls between the mobile users, and between mobile and fixed network users. The MSC also handles the mobility management operations. Not shown is the Operations and Maintenance Center, which oversees the proper operation and setup of the network. The Mobile Station and the Base Station Subsystem communicate across the Um interface, also known as the air interface or radio link. 8051 provides a transmit channel and a receive channel of serial communication. The transmit data pin (TXD) is specified at P3.1, and the receive data pin (RXD) is at P3.0. All modes are controlled through SCON, the Serial control register. The timers are controlled using TMOD, the Timer mode register, and TCON, the Timer control register. free circuit electronic gsm controller system ,controlling machines using gsm mobile sms services gsm interfacing with microcontroller 8051

76 comments:

  1. the idea is very nice
    where can i get the embedded code of it????
    am dng a project on it ...........
    so pls tell me early

    ReplyDelete
  2. @ jagadeesh jogi
    The code for the interfacing of GSM modem with microcontroller 8051 family is being updated in the next two post of this blog.
    actually, i am posting the information about the interfacing of GSM modem with microcontroller in steps, some interfacing literature is uploaded here and remaining will be posted in comming posts. so keep in touch and check the microcontroller51.blogspot contineously.

    ReplyDelete
    Replies
    1. Sir,
      I have decided to do this project. But I have a little idea about the whole thing. After reading the three articles. I assumed that ill be needing
      1. GSM Module
      2. RS232
      3. 8051 mc
      4. Relay driver IC ULN 2803
      5. Voltage regulators
      6. Code to program the module to mc
      7. Code to program the mc to relay
      If there is anything more necessary then please tell me so and ill need a circuit diagram too. I also request you to send me some pdf or doc on the complete working details of how the entire thing works detailed.

      Will you also be able to help me with the coding. By that I dont mean I need you to send me the code but to correct what I do.

      Delete
    2. Sir,
      I have decided to do this project. But I have a little idea about the whole thing. After reading the three articles. I assumed that ill be needing
      1. GSM Module
      2. RS232
      3. 8051 mc
      4. Relay driver IC ULN 2803
      5. Voltage regulators
      6. Code to program the module to mc
      7. Code to program the mc to relay
      If there is anything more necessary then please tell me so and ill need a circuit diagram too. I also request you to send me some pdf or doc on the complete working details of how the entire thing works detailed.

      Will you also be able to help me with the coding. By that I dont mean I need you to send me the code but to correct what I do.

      Delete
    3. Sir,
      I have decided to do this project. But I have a little idea about the whole thing. After reading the three articles. I assumed that ill be needing
      1. GSM Module
      2. RS232
      3. 8051 mc
      4. Relay driver IC ULN 2803
      5. Voltage regulators
      6. Code to program the module to mc
      7. Code to program the mc to relay
      If there is anything more necessary then please tell me so and ill need a circuit diagram too. I also request you to send me some pdf or doc on the complete working details of how the entire thing works detailed.

      Will you also be able to help me with the coding. By that I dont mean I need you to send me the code but to correct what I do.

      Delete
    4. Sir,
      I have decided to do this project. But I have a little idea about the whole thing. After reading the three articles. I assumed that ill be needing
      1. GSM Module
      2. RS232
      3. 8051 mc
      4. Relay driver IC ULN 2803
      5. Voltage regulators
      6. Code to program the module to mc
      7. Code to program the mc to relay
      If there is anything more necessary then please tell me so and ill need a circuit diagram too. I also request you to send me some pdf or doc on the complete working details of how the entire thing works detailed.

      Will you also be able to help me with the coding. By that I dont mean I need you to send me the code but to correct what I do.

      Delete
    5. Sir,
      I have decided to do this project. But I have a little idea about the whole thing. After reading the three articles. I assumed that ill be needing
      1. GSM Module
      2. RS232
      3. 8051 mc
      4. Relay driver IC ULN 2803
      5. Voltage regulators
      6. Code to program the module to mc
      7. Code to program the mc to relay
      If there is anything more necessary then please tell me so and ill need a circuit diagram too. I also request you to send me some pdf or doc on the complete working details of how the entire thing works detailed.

      Will you also be able to help me with the coding. By that I dont mean I need you to send me the code but to correct what I do.

      Delete
  3. concept is great...actually i am also making a project on this...
    so pls do me a favor..please tell me where i can get the code of it and also the circuit diagram??....it will be great of u... if u tell me as soon as possible..thank you...

    ReplyDelete
  4. @ mohit : -

    Thanks for liking the concept of controlling industrial machines through SMS via GSM modem or mobile interface with microcontroller. It is good that you also working on this project.
    The circuit diagram and code of mobile interfacing is provieded in three consective post on the subject GSM modem or mobile phone interface with microcontroller. The URL of the other posts on same topic is as follows:--
    1. Title of the POST is "microcontroller 8051 and GSM based Home security system hidden cameras" and URL is microcontroller 8051 and GSM based Home security system hidden cameras


    2. Title of POST is "SMS Based Controlling Different Industrial Machines Using GSM Mobile and microcontroller 8051"
    and URL is
    SMS Based Controlling Different Industrial Machines Using GSM Mobile and microcontroller 8051


    3. The title of the POST is "GSM modem interfacing with microcontroller 8051 for SMS control of industrial equipments"
    and URL for mobile phone interface is
    GSM modem interfacing with microcontroller 8051 for SMS control of industrial equipments

    4. This is an-other post on the subject mobile phone interface with microcontroller with title "Interface a mobile Phone with micro-controller 8051 family like at89s51, at89s52, at89c2051"
    and URL of the mobile interfacing is as under:
    Interface a mobile Phone with micro-controller 8051 family like at89s51, at89s52, at89c2051

    I hope you will like these posts and get some helpful information from above post also. There is a short project on above for learner and student by understanding the small project and concept, can build bigger application.
    If you still have questions, plz ask and discuss here.

    ReplyDelete
    Replies
    1. sir i am working on project that is..To control valve by sending sms to 8051.
      my 8051 and H-bridge circuit is working poroperly and also my Gsm modem SIM900 is working properly with my laptop.
      But the i am facing is that to interface 8051 with sim900 to turn on the motor ..actually i need code to run the project ..almost my project is complete but this section is remaining which i mentioned .
      i will be thankfull to you for helping me in this direction.

      Delete
  5. thanks for sending reply but i dont need a block diagram.i need a circuit diagram of various components used in my project.

    ReplyDelete
  6. @ mohit : -

    If you have block diagram of your project and you are confused about how to develop, you can send me the idea or block daigram flow chart or proposal of your microcontroller project, i will see, if possible i will draw a circuit diagram for it.

    ReplyDelete
  7. would you like to say how the gsm module will respond to the new message

    ReplyDelete
  8. would ypu like to say how the gsm working clearly

    ReplyDelete
  9. @ interfacing devices :-
    We will send a command from microcontroller to GSM modem after a regular time interval contineously to check a new SMS in SIM or mobile.
    If the GSM respond that there is new SMS, then we will read it.
    All this is done with the help of AT Commands for mobile or GSM interfaces.
    The complete set of AT commands can be search at Internet.

    ReplyDelete
  10. Dr. Rana ,
    can i monitor the machines by involvment of sensors rather microcontroller as it require programming which is weaker side of mine.

    ReplyDelete
  11. @ language club :-
    Where you want monitoring of results from sensors?
    If your answer is on computer then you need microcontroller for this. Because any device required to attach with PC needs some necessary protocols and arrangements.
    There are main Three posts available on computer to interface external devices with it.
    1. Parallel port
    2. serial port
    3. USB port

    All three have different set of requirements and arrangements.
    For examle, you decided to interface some thing to PC via parallel port then, there is chance that you need not to use any microcontroler. But then you will need to design an electronics circuit with TTL IC including buffers say 74ls245 or 74ls244 and latechs like 74ls373, decoders say 74ls138. In addition to above, if you have sensors which gives analog out put then, some suitable analog to digital converter (ADC) will also be used. This will result in a complex circuit and difficult to handle. Then you will need programming in computer in any suitable language like C/C++ or VB6 or visual C etc.

    If you decided to use serial port then any microcontroller which have facility to comunicate with other devices through serial ports will be used. It will also required programming for microcontroller and PC seperatly.

    If you go for USB port, then you have to select a microcontroller in which USB communication is available like PIC18f4550 or any other having USB.

    If you have no knowledge of programming then you needs some programming learning first.
    if you any proposal of your work and you want to interface some sensor with PC or microcontroller, then i can help you. But first send me your project work via my e-mail ID, rghkk@hotmail.com
    Thanks

    ReplyDelete
  12. I am a final year student and am doing a project on 'controll and monitoring of DC motor via SMS and microcontoller'.pliz help on the programming of the project using c and circuit diagram. thanks.

    ReplyDelete
  13. @ Evans Ondeng :-
    If i have to send you the programming and circuit diagram of your project, then WHAT IS YOUR WORK IN PROJECT? JUST TP PRESENT IT AND GET GRADS? HAA HAA
    I think this is not good way to do any degree project.
    You should read literature, read different articles related to your project, read different post in this blog related to your project.
    Then make your mind with some suitable idea, then try to design your project. Then try to draw circuit diagram, after the complition of circuit, try to write code for your project.

    During above work, if you are confused on any point, then raise questions specifically about that point, get answer and move ahead.

    instead of asking some one to give you all readymade project circuit and code.

    If you are interested in learning some thing about microcontrollers, motors, coding, circuit, then ask me the questions as many you can, i will try to give answers and help you to finish the project by your own.
    But i will notgive you spoon feeding.

    ReplyDelete
  14. i want to sense the voltage changes ,using the micro-controller and it will be further given to the gsm modem .....can you suggest me..!!

    ReplyDelete
  15. @ rushi__ca$h :-
    If you want to check the voltages changes then you should use analog to digital converter ADC, like ADC0804 which is very simple 8-bit single channel ADC, and if you have more than one voltage lines to chack then use ADC0809 which is 8-bit and 8-Channels ADC and their interfacing with microcontroller is very easy. YOu will find many posts in my blog related to interfacing of these two ADCs in different project, the circuit diagram and code is also given.
    Then for GSM modem you can help this post, all necessary information is provided in three consective posts.

    ReplyDelete
  16. is this applicable also in any type of gsm modem? and can i replace micro controller 8051 to arduino?

    ReplyDelete
  17. @ Anonymous (GSM Modem 8051 and ARDUINO):-
    This post is about generalize information regading the interface of GSm mobile with microcontroller. The software should be written after careful understanding of GSm modem and Microcontroller.

    ReplyDelete
  18. can you please lend me a circuit diagram of gsm modem connected to the Microcontroller?

    ReplyDelete
  19. @ Anonymous (GSM Mobile Interface Microcontroller):-
    Circuit diagram is already uploaded here on blog

    ReplyDelete
  20. Hello Sir,


    Hello, I'm a final year student. I need a help from u Sir. Do u know how to amplify a 5mV to 5V using opamps? Where can i get the circuit from. My final year project is about heart rate monitor. I need to amplify a 5mV signal which i collect from human body and need to amplify to greater voltage. Hope, u can help me Sir. Thanks.


    Regards.
    Diresh

    ReplyDelete
  21. @ Diresh :-
    Study the basic electronics book to understand the circuit designing of OP-AMPs.

    ReplyDelete
  22. what i mean schematic diagram. how about the wiring connection of gsm module to the microcontroller. i am using gizduino as mcu and sim900d for my gsm module. please2x i badly need it. is it only rx,tx and ground of the gsm module is connected to the mcu?

    ReplyDelete
  23. @ Anonymous (GIZDUINO and SIM900d wiring connections):-
    Ok, then what is meaing of "WHAT I MEAN SCHEMATIC DIAGRAM", the vey first line of your comment is without any reference and does not show any sense.
    The wiring connections of diferent GSM modems can vary and depends upon the model and make, there is no rule of thimb or general method, you should find the datasheets of the GSM modem and then connect accordingly. The Microcontrollers have many io pins available to connect external devices, it is upto you to design and decide where which componenet should be connected, again nothing is blindly connected and no circuit is generalized to all applications, IT IS PROJECT DESIGNER WHO DECIDE ABOUT CIRCUITS AND SCHEMATICS.
    If you badly need then DO IT, instead of copying some one else work, do your own. However difficulties can be discussed with experts.

    ReplyDelete
  24. can u plz send me a brief report with code on GSM module based light control system....plz

    ReplyDelete
  25. @ Anonymous (Report on GSM module interface):
    Sorry i donot have any report about GSM module interface with microcontroller.

    ReplyDelete
  26. Sir,can you give me the ckt diagram of sms based controlling industrial machines using gsm mobile & microcontroller 8051?

    ReplyDelete
  27. please help me to get the circuit diagram of this project as i m working on it...and some more details regarding this project..

    ReplyDelete
  28. sir i liked u project..
    sir can i know how does this work based on sms...
    i would like to know the code for sending and receiving the sms .
    can u please give the information as soon as possible..

    ReplyDelete
  29. Hi,
    Please share C sample code for sending and recieving AT command to GSM Module using MCU(P89V51RD2). IDE is Keil.
    Any help will be highly appriciated.
    Many Thanks!!!

    BR,
    Kamal.

    ReplyDelete
  30. #include // RTC
    #include
    #include "RTC.h"
    #include "Uart.h"
    #include "common.h"
    #include "LCD.h"
    #include "Keypad.h"
    #define NO_ACK 0
    #define ACK 1


    unsigned int i ;
    unsigned char const Device_Write = 0xD0;
    unsigned char const Device_Read = 0xD1;
    unsigned char g_Alarm = 0, g_Alarm_Timer = 0;
    unsigned char g_Reset_Expire_Time;
    extern unsigned char g_Reset_Button;
    extern unsigned char g_Offset;

    unsigned char const *rtc[]={ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
    // unsigned char const *day[]={ "*SUN*", "*MON*", "*TUE*", "*WED*", "*THU*", "*FRI*", "*SAT*" };
    // unsigned char const *pmam[]={ "am", "pm" };
    unsigned char rtc_recv_val[7]={0};


    void Start( void )
    {
    SDA = 1;
    _nop_();_nop_();// I2C_delay();
    SCL = 1;
    _nop_();_nop_();// I2C_delay();
    SDA = 0;
    SCL = 0;
    }

    void Stop( void )
    {
    SDA = 0;
    _nop_();_nop_();// I2C_delay();
    SCL = 1;
    _nop_();_nop_();// I2C_delay();
    SDA = 1;
    }

    void Initialize_RTC( )
    {
    WriteOneByte( 0x00, SECONDS );
    Delay(30);
    WriteOneByte( 0x10, 0x07 );
    Delay(30);
    // WriteOneByte(0x58, MIN );
    // Delay(10);
    // WriteOneByte(0x17, HOURS );
    // Delay(10);
    /*
    WriteOneByte(0x10, 0x07 );
    Delay(10);
    // for( i = 0; i < 6; i++ )
    // rtc_recv_val[i] = 0x00; */
    }



    void Read_RTC_With_Off_Time()
    {
    rtc_recv_val[0] =ReadOneByte( SECONDS );
    Delay(10);
    rtc_recv_val[1] =ReadOneByte( MIN );
    Delay(10);
    rtc_recv_val[2] =ReadOneByte( HOURS );
    Delay(10);
    rtc_recv_val[3] =ReadOneByte( 0x0a );
    Delay(10);
    rtc_recv_val[4] =ReadOneByte( 0x0b );
    Delay(10);
    rtc_recv_val[5] =ReadOneByte( 0x0c );
    Delay(10);
    }

    void Write_New_Time()
    {
    WriteOneByte( rtc_recv_val[0], g_Offset++ );
    Delay(10);
    WriteOneByte( rtc_recv_val[1], g_Offset );
    Delay(10);
    }

    void Display_Time_24_Hr_Format()
    {
    Read_RTC_With_Off_Time();
    initLCD();
    writeStringLCD("CurTime ");
    disp_data_rtc( rtc_recv_val[2] );
    Wrt_Byte_LCD(':');
    disp_data_rtc( rtc_recv_val[1] );
    Wrt_Byte_LCD(':');
    disp_data_rtc( rtc_recv_val[0] );

    writeCmdLCD(LFT_HOME_L2);
    writeStringLCD("OffTime ");
    disp_data_rtc( rtc_recv_val[3] );
    Wrt_Byte_LCD(':');
    disp_data_rtc( rtc_recv_val[4] );
    Wrt_Byte_LCD(':');
    writeStringLCD("00");


    if ( rtc_recv_val[2] == rtc_recv_val[3] ) // HRS
    {
    if( ( rtc_recv_val[1] == rtc_recv_val[4] ) && (g_Alarm == OFF ) ) // MIN
    {
    g_Alarm = ON;
    g_Alarm_Timer = 7;
    }
    else if( g_Alarm_Timer > 1 )
    {
    g_Alarm_Timer--;
    BUZZER = ~BUZZER;
    }
    else if( g_Alarm_Timer == 1)
    {
    g_Alarm_Timer--;
    DEVICE = ~DEVICE;
    }
    }
    }

    ReplyDelete
  31. sir,can u pls can u put a circuit for this project.do i hav to use resistor or capacitor for this?

    ReplyDelete
  32. Sir, I am doing my project on this using a PIC. shall I be able to use a dongle for the modem? sir pls do help me for its interfacing if its possible...

    thanks

    ReplyDelete
  33. Is It Possible to make the gsm modem accesible to only one mobile number if so please tell the procedure thanks....
    Regards naveen

    ReplyDelete
  34. can u send circuit diagram for this project

    ReplyDelete
  35. Hi,
    Please share C sample code for sending and recieving AT command to GSM Module using PIC16f871. MPLAB. Any help will be highly appriciated.
    Many Thanks!!!

    ReplyDelete
  36. please email the circuit diagram to mohanrao.kolisetti@gmail.com

    ReplyDelete
  37. hi,anyone send me the 433Mhz wireless weather station using RF signal assembly language program using atmel 89c51,and we using temperature n humidity sensors,micro controller output should be displayed in LCD(16x2-alpha numeric display)

    ReplyDelete
  38. please send the usecase and dfd for this project and also post a project , like gsm based vechicle speed control system

    ReplyDelete
  39. HI
    Im doing the project on this for susbstion transformer and feeder line protection using sms based alerts,,, pls post all the interfecing codes for this,,,

    ReplyDelete
  40. hi
    im doing project based on this for substation transformer and feeder protection system with sms based alerts ,,, so pls post the interfacing codes,,,

    ReplyDelete
  41. hi; am doing a project where i use a microcontroller to set the temperature of water by using the GSM technology. i wish to get a feedback on my phone that the set temperature has been reached. the command is to be sent by SMS from my mobile. how can i automatically pick the SMS from the modem to induce the heater. please send me the necessary help probably with the right code. JACKSON (tegiikedennisjackson@ymail.com)

    ReplyDelete
  42. Hello Sir,
    Still I am doing project work on GSM using PIC(dsPIC33FJ16GP102) microcontroller to send messages.
    For starting of program how can i permanently store mobile numbers and messages in RAM.
    Please tell me suitable suggestions. And also what communication we need?

    ReplyDelete
  43. Hello Sir,
    Still I am doing project work on GSM using PIC(dsPIC33FJ16GP102) microcontroller to send messages.
    For starting of program how can i permanently store mobile numbers and messages in RAM.
    Please tell me suitable suggestions. And also what communication we need?

    ReplyDelete
  44. Hello Sir,
    Still I am doing project work on GSM using PIC(dsPIC33FJ16GP102) microcontroller to send messages.
    For starting of program how can i permanently store mobile numbers and messages in RAM.
    Please tell me suitable suggestions. And also what communication we need?

    ReplyDelete
  45. Hello Sir,
    Still I am doing project work on GSM using PIC(dsPIC33FJ16GP102) microcontroller to send messages.
    For starting of program how can i permanently store mobile numbers and messages in RAM.
    Please tell me suitable suggestions. And also what communication we need?

    ReplyDelete
  46. how many appliance control by this project plz reply fast

    ReplyDelete
  47. hoe many appliance control by this project

    ReplyDelete
  48. sir! my final year engineering project is sms based lcd display. I want complete circuit diagram of this project and also component list. sir please send me this. my mail id is akashgoel81@gmail.com.

    ReplyDelete
  49. will anyone share me about at command and how to use this for appliance control using sdcc compiler

    ReplyDelete
  50. Sir, our project is to make a digital clock in 4 dot matrix display using 89C51 microcontroller and we have to display minute and second. Can u please send me a code in assembly language and also the circuit diagram. Plzzzzzzzzzzzzz. :-(

    ReplyDelete
  51. how can i read sms using the gsm mobile connected with the microcontroller?i mean can you provide the c code?
    thankyou.

    ReplyDelete
  52. would you plezz..give me the c code for reading sms using the gsm mobile phone connected to the microcontroller and would you show me clearly each connection b/n the 8051/52 with the gsm mobile especially the Tx,Rx and Gnd pins.
    thankyou

    ReplyDelete
  53. @ mic for SMS on GSM mobile phone through 8051:
    MIC you should discuss your sms send project using microcntroller 8051, with me live on messenger.my suggestion is, you contact me through yahoo messgenger (rghkk1) or skype (mc090201473). So that i can check if it is possible for me to help you.

    ReplyDelete
  54. sir your code contain code for sending message.can you explain receiving of message because when you send a message to gsm modem how is microcontroller gonna deal with it /please reply

    ReplyDelete
  55. sir we r doing project-gsm based robotic car.....
    in that we r using gsm module (SIM900a)
    and we interface with the microcontroller 89c51....through RS@#@ and MAX232 IC.
    so, i need assembly language programme to drive motor.....

    DTMF tones....
    2-forwrd
    8-reverse
    4-lft
    6-right
    5sop

    ReplyDelete
  56. respected sir
    i am last year student in EC Gujarat,India.i have done irrigation system which works manually .but i want to do wireless automatic irrigation system but i don't have any idea how to do it.so please can u send me the circuit diagram,working,component list and source code.i have to submit in very short time.but please make sure the components are available in india.please reply me

    ReplyDelete
  57. hello sir,
    my project is based on sms through controlled the machine gives some idea to me .now am having some trouble in tha,

    ReplyDelete
  58. sir,
    would you tell me please, how can i decode a sms and give the command to a device according to that sms by interfacing a mobile phone to a micro controller without using any computer. Or how can i do this work only use SIM card and interfacing it with micro controller.

    ReplyDelete
  59. sir,
    would you tell me please, how can i decode a sms and give the command to a device according to that sms by interfacing a mobile phone to a micro controller without using any computer. Or how can i do this work only use SIM card and interfacing it with micro controller.

    ReplyDelete
  60. sir,
    would you tell me please, how can i decode a sms from a GSM mobile phone and give that command to a device in accordance with that sms by interfacing that mobile phone to a micro controller without using any computer. Or how can do this same work only using a SIM card interfacing with micro controller.

    ReplyDelete
  61. Dear Dr. Rana,

    I was looking for same kind of product to develop for my farm (as end user!). It is very hectic, irritation & risky to run to farm from home simply to on or off the motor pump (irrigating to farm).
    especially at night hours or rainy days. So I want to develop a device which responds to sms sent from anywhere (irrespective to distance)

    I know electronics(H/W) quite but not much aware about microcontroller coding.


    I need some more features in the project as:
    1. Main Power Supply dependency:
    As there is main power down frequently, system should be sensitive to power supply & take a appropriate action depending on main power availability & send the status of power & action taken to farmer.

    2. Anti-theft system: System should have master(& maybe one more for secondary) mobile no. registration facility, so that system follow the instruction of predefined only. changing of mobile no. (of user) should also possible by sending particular sms to the system

    3. Power Status on request - System will send the status of power by sms to the master user on request. request may be by predefined text or missed call.

    4. No response to other sms & call. Auto delete sms (to save memory) I think this feature is available in current project.

    5. Optional feature - voice response (Farmer friendly): On missed call / calling to system, system guide the user by voice to take action by pressing the nos. on mobile keypad. It is looks quite advance & may require quite high-end coding, but farmers defiantly welcomes & appreciate it. It could be a separate project.

    So Dr., Could you please help me for coding & detail circuit for this project. Or If you develop it for me, & affordable, me & some of my neighbor farmers can buy it.

    Regards,
    Prasad, Pune-MH.
    ppk1982@hotmail.com

    ReplyDelete
  62. Dear Dr. Rana,

    I was looking for same kind of product to develop for my farm (as end user!). It is very hectic, irritation & risky to run to farm from home simply to on or off the motor pump (irrigating to farm).
    especially at night hours or rainy days. So I want to develop a device which responds to sms sent from anywhere (irrespective to distance)

    I know electronics(H/W) quite but not much aware about microcontroller coding.


    I need some more features in the project as:
    1. Main Power Supply dependency:
    As there is main power down frequently, system should be sensitive to power supply & take a appropriate action depending on main power availability & send the status of power & action taken to farmer.

    2. Anti-theft system: System should have master(& maybe one more for secondary) mobile no. registration facility, so that system follow the instruction of predefined only. changing of mobile no. (of user) should also possible by sending particular sms to the system

    3. Power Status on request - System will send the status of power by sms to the master user on request. request may be by predefined text or missed call.

    4. No response to other sms & call. Auto delete sms (to save memory) I think this feature is available in current project.

    5. Optional feature - voice response (Farmer friendly): On missed call / calling to system, system guide the user by voice to take action by pressing the nos. on mobile keypad. It is looks quite advance & may require quite high-end coding, but farmers defiantly welcomes & appreciate it. It could be a separate project.

    So Dr., Could you please help me for coding & detail circuit for this project. Or If you develop it for me, & affordable, me & some of my neighbor farmers can buy it.

    Regards,
    Prasad, Pune-MH.
    ppk1982@hotmail.com

    ReplyDelete
  63. sir i like the concept..
    i want to interface gsm mobile with 8051.
    i want to send data of micro controller to other gsm mobile using the interfaced gsm mobile please help me...

    ReplyDelete
  64. Sir, Can you please post the assembly codes for GSM based Home appliance control system. Pls give me the idea, what GSM modem or cell phone (which is best) can be used for interfacing with the Microcontroller (PIC18).... kindly reply me soon if anyone have the program or ideas. Plz plz plz reply ..it's important..Thank you everybody

    ReplyDelete
  65. sir, am sethupathy, i need a help of at command:
    actually, my concept is the modem receive a mgs that mgs forwarded to 8051. i need a command to read a mgs at accept from predefined number only.

    ex. my number is stored in 8051. the program resond only that number to on /off the load.
    p'ls clarify my doubt Asap.
    Mail Id: sethupathy2@gmail.com

    ReplyDelete
  66. sir ,i have done with hardware part of this project but struck with coding so pl can u give code for sending messages through gsm and interfacing of it

    ReplyDelete
  67. sir i m working on this project after reading ur this idea. but i wand some information about interfacing and programing... so plz guide me.. plz mail me content and links related to this project.
    thank u sir.

    ReplyDelete
  68. Is this blog still running?
    Anyways.

    To the blog moderator, a good day to you.

    I'll be blunt and direct. Can you teach me how to interface sim to 89cx2051mcu? The thing is, I am doing a project about autodialler and the mechanical design and program is already done. The last thing is how to interface the mcu to an ordinary telephone line or to a GSM sim. This has been very crucial since we only got 2 weeks to finish the project.

    I hope I am not offending or offering pressure. I'm just desperately need help and I hope you can help me.

    Thank you very much.

    ReplyDelete
  69. LOTANNA for gsm based notice board for collegesFebruary 15, 2014 at 11:57 PM

    Dear Sir,
    I saw your post last two years on micro-controller based data acquisition and control system.
    Right now am doing a work on gsm based notice board for colleges, but am finding it hard to do
    proper performance evaluation for the work, so i don't know if you can help me out, I am ready to
    send you all details of my work and I also learnt that your assistance is not for free but I want to get
    Confirmation from you first. I am looking forward to your reply.
    Thanks.
    (LOTANNA)

    ReplyDelete
    Replies
    1. @ LOTANNA for gsm based notice board for colleges:
      send me all details of ur project, what have you sofar? and what you need.
      Regards

      Delete

Please note that my helps are not for free.
So, send me your problems and pay money for solution.ok
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