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Recent content by riponsp

  1. R

    design and development of gsm based vehicle theft control system

    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...
  2. R

    I need help please GSM Alarm projects and read sms

    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.
  3. R

    I need help please GSM Alarm projects and read sms

    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...
  4. R

    Triac based light dimming using 8051 microcontroller

    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...
  5. R

    Triac based light dimming using 8051 microcontroller

    I'm facing a problem to make the zero crossing detection circuit. could you discuss the zero crossing part details.

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