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sir my project is to automatically send an sms through gsm modem to the doctors mobile using a microcontroller whenever the threshold limits of blood pressure,temperature,heart beat etc are crossed so please suggest which microcntroller to be used and the mobile to be used and the necessary circiut with source code
"we want the name of the modem and also mobile name"
Why to you want mobile name? for demo take your cell & Use your mobile number to send message.
Do following Connections:
P3.0 (RXD)connect this pin to pin no 9 of MAX232 IC P3.1 (TXD)connect this pin to pin no 10 of MAX232 IC
pin no 8 of MAX232 IC to pin no 2 of DB9 connector pin no 7 of MAX232 IC to pin no 3 of DB9 coneector
is db9 connector present in gsm modem????
the link which u gave is not working.......
Yes.
ok sir i understood db9 connector but should we insert any capacitors or necessary elements between microcontroller 89S52 and rs232 pls provide me the circuit related to this and the link which u sent is not working.can u suggest other link if any.
Ok fine.
Then put "AT commands guide" in google search you will get manual from there.
I don't have circuit diagram. For MAX232 you will have to connect some capacitors. Details given in the datasheet.
Other than that you don't need any capacitor or any other element.
SIR CAN U GIVE UR EMAIL ID?????
why?
IF I HAVE ANY DOUBTS I CAN BE IN CONTACT WITH U
AGAIN ONE DOUBT SIR CAN U PLS GIVE THE ORDER OF THESE ELEMENTS.IS IT MICROCONTROLLER TO RS232 TO GSM MODEM
This is public forum. I can't give. make one email id, give me. I will contact you on that. Ok
"connect your modem to UART of microcontroller"
HOW CAN WE CONNECT MODEM TO UART of microcontroller will there be any connections between modem and uart of mc,i mean do gsm modem have any port
Microcontroller -> Max232 -> GSM modem
sir u said that we should connect uart of mc to gsm modem how can we connect that???
GSM modem have DB9 Connector