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Hi nakulsasikumar, first don't mix GSM module and GPS module. Tows are different thing (Some module also contains booth tows). GPS device can only receive the GPS data which are send from GPS satellite. Most of the time it follow NMEA protocol. You can find out your co-ordinate by using the GPS...
rajudp, yes you are right if you want to read the sms body. But If you want to read the sender number of the sms then you have to consider from the + sign. But for this project, I think your idea is right. it should make a sintex in the sms to read all three numbers.
From the serial port (TX pin of the GSM module) you found
<CR><LF>
+CMGR: "REC UNREAD","+880123456789",,"12/07/26,00:07:36+24"<CR><LF>
(SMS body)<CR><LF>
<CR><LF>
OK<CR><LF>
21th offset From the first + sign is the number start.
I think Anzilkhan is correct. You can send the number in one...
Thank you for your replay. This is the circuit which I used. In the code I wrote, when a interrupt in the INT0 pin, where zero crossing detector is connected, PORTB.0 become High that mean it trigger the TRIAC. after 1000uS later it become turn off. In this case light become less brightly...
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