/Projects/GSM call alarm

GSM call alarm is a device that will call a destination number via Siemens or Ericsson GSM phone (19200 bps RS232). It has 1 sensor input and another input - state (stanje). If state input is = 0V than the device is "active" and it monitors the sensor input. The device is deactivated when state pin is connected to Vcc (+). Sensor input is triggered by 0V.


In project file for download, you will find a JPG image that describes how to program the number you whish to be called when alarm occures. I hope you will find some use for this device, as I did - for my car.


Author (sent by): Trax

Download counter: 28,543

Rate: (2.94, votes 4752)


Date: 20-02-2005

Lokalna verzija ove stranice: GSM call alarm


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comment [49]

Hello, I have same problem as on comment 45. I made same GSM call alarm, but I have problem: after the sensor call my number and I cancel the call, ater couple second it call me again and it is repeating until I disconnect the power or cellphone. please help me regarding this problem. thank you in advance.
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comment [48]

hello again! today replaced the program in the PIC what you sent me, and it's fixed the problem with the recalls. when the incoming call is cancelled after 40-50 secs it returns to alarm enabled state. here is some pictures, and test videos(read comments first!): http://angyalszarny.uw.hu/callalarm.jpg http://angyalszarny.uw.hu/callalarm2.jpg http://angyalszarny.uw.hu/test_1.MOV http://angyalszarny.uw.hu/test_5.MOV http://angyalszarny.uw.hu/tests_comments.txt regards, angelwing
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comment [47]

ok trax thank you... here is my email.... brian_c85@yahoo.com...thank you very much..God Bless
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comment [46]

I will send you new HEX to your E-mail. This one should work better for your phone... After testing, give us your results.
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comment [45]

forgot to mention what happens on the panel: - Red is flashing : alarmed state - senzor triggered - Red is lighting countinosly calling - canceling the call / picking up on my destination phone - Yellow Led turns off, Red is on - Yellow Led turns on, Red is on and the telephone calling again. - canceling call .... repeating
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comment [44]

hello Trax thank you for this schematic its really great, i already built it and its works. sadly i dont understand your comments, i dont know that language. my only problem is after put it to watching state and the alarm has been made... i can't stop the recalls. how can i stop it from outside? i tried to call the alarm from my number, tried to pick up and after 10 sec hang over it... tried to cancel the incoming call. these wasnt work.. can you help me ? regards, angelwing
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comment [43]

ei trax, the module is now working, but it didn't call the number.. is it my phone MC60? or the encoded number on the hex? because when i encode it on the ICprog, I copied its ASM instead of hex and paste it in the mplab.. because our pic programmer is supported only on mplab, the picstart plus. Do i messed up the programming? what can you advise? thanx trax
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comment [42]

Hi i really want to make that alarm, i wait only 15-50 sec, for phone to be initialize. Now i will try with SIEMENS A52 it should work?? Thanks for everything and good night.
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comment [41]

ARME is ON/OFF pin that needs to be activated in order to "Arm" the alarm (make it ready).
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comment [40]

can i ask for the last time?(= what do u mean by "ARME" in the flowchart? THANX AGAIN!!!! ur such a blessing to me...(=
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