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88 Threads found on Sim 300
Hi, I am using 8051 microcontroller with interfacing sim 300 modem My First aim is read signal strength from modem and show to 16*2 display. My code is below, My problem - The received signal strength - Not show to the display #include #include sbit rs=P1^0; sbit rw=P1^1; sbit en=P1^2;
i am working on my project that switches off and ON home appliances using an android app that creats sms .The app can also request for power being drawn by the appliances through sending texts request that can be red by a gsm module. My gsm module is linked to a pic 18f4550 and my gsm module is a sim 300 gsm module. I am using a CTL6vz current se
hi we are interfacing sim 300 with PIC18f. ,using ccs compiler if i m sending at commands from microcontroller to modem , it is working perfect. we monitor via hyperterminal. but if i m checking for 'OK' after each at command, it receives only for 1st at command. here is my code void main() { char c; int8 i; for(i=0;i<10;i
hello I want to send and receive sms through gsm modem. I am using avr 128. I am able to send messages but I am not getting how should I receive a message. To read a message I need to send AT+CMGR=1. This will read the first message. But to read that I need to read response of this command i.e. in turn I need to read UBR. Now the response of t
Hi.. I am using PIC 16F877A Microcontroller and sim 300 GSM Modem Actually I can send sms using sim 300, can receive the message location and displayed that on lcd. Everything works on hyperterminal. But in hardware i couldn't receive the message from the modem.I couldn't find the problem..
Hi, i want to know the difference between sim300 and sim900 gsm modem. I am using sim300 gsm modem in my project and implementated the Project. now sim300 gsm modem is absolete. Now i have to use sim900. shall i replace the sim900 (...)
I read older thread and actually I am getting confuse on that does "GSM sim 300 Modem with RS232" need MAX 232 for connection?could anybody give me any idea of this.
hi i am working gprs with sm sim 300 module. and i am not able to access the google page itself.suggest some solution.
hii everyone.. i am doing project which uses GPS and GSM. so please help me with code for interfacing gps and gsm with atmega16 already i have worked with AT commands but i am failing in interfacing them with micro controller please help me......... thanks in advance...
Response from GSM sim 300 will be in string format like \r\nOK\r\n, so, you don't have to add 0x30 to them. UART receive interrupt should be enabled by setting RCIE bit before do {...}while(1); loop. do { i = 0; Tx_string("AT\r"); //while(!RCIF); while(i < 6) { // \r\nOK\r\n = 6 characters if(RCIF) bu
As sim300 works with UART protocol, use UART TX to send commands.Then what ever GSM replies read with UART RX and display the same on LCD. smaple code: tx_string("AT"); x=RX(); LCD_dat(x);
Hi am using sim 300 for this project. here am doing incoming call based and number entering in keypad based motor on / off system. How to receive after attend the call, pressed keypad values? pressed Keypad value based motor On/off. Eg- Press 8- Motor On, Press 9- Motor Off. Emergengy, Reply quickly. Thanks
Hi! I want to connect GSM modem (sim 300) and GPS module (SR90) to laptop via two USB-to-DB9 converter cables, for Proteus simulation using compim. I have two free USB ports on laptop for that. Here is the Proteus screenshot: 100968 As mentioned in this reply
hi geeks I m working currently on a SMS-driven LCD display I m using at89s52 microcontroller , jhd204a lcd display and sim 300 gsm module the concept of the project is to display the msg from the authorized user in the LCD display and if the msg is frounm the authorized user the LCD should display "msg from unknown" and should forward the
Sir I have tested GSM sim 300 interface with PIC 16f877a send SMS & recive and even also dailing every thing is fine with PC and PIC16f877a microcontroller. But my problem is I have to display the GSM data into LCD directly i mean i have to read direct acess i am not reading inbox messages whever its coming the message and ring indication I have
Try the following sequence AT+CMGF=1 ;;As u have used in sim900 also Now try this AT+CSCA="+XXXXXXX" //Set your SMS Center's number, you have to check with your provider about this number And then Finally Do AT+CMGS="number"
hello, I have tested the code microcontroller with pc (Computer) on hyperterminal, evrerything is OK. What are the commands? I have written the code it will send same commands but when I connected to PIC micro controller to GSM sim sim 300 its not working ...
As per my idea sim300 not support hot swapping of sim card - - - Updated - - - Controller reset with few microsecond which sim300 reset require few second so u require some delay to communicate with sim300
Dear Friends I have to started this project LINK : It's working fine But I want to add gsm modem (sim 300) for Remote monetoring and controlling purpose Is it possible or not I don't have a knowldge of Surce code changeing Please help me
is sim 300 gsm module available in Proteus? which microcontroller is suitable for interfacing with sim 300? is there any other software available for simulation which support sim 300?

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