GSM Alarm

Fresh from the tips line, [Pedro] sent in his GSM alarm. He combined a GSM phone, a motion sensor and BasicX24 controller board. If the detector trips during a set time period, the alarm sends SMS messages to the terminator, er whoever you want. He was kind enough to release the code, but I’d like to see this with a smaller micro-controller board to keep the cost/size down.

14 thoughts on “GSM Alarm

  1. You can do something like this with an AVR. See application note AVR323 for details. Not with a motion sensor but that shouldn’t be the biggest problem.

  2. you can automate mms and sms. which would be a better solution.

    a $0.98 8 pin pic chip and a little bit of coding and this could be easily done for far cheaper.

    Basic stuff here guys

  3. cheaper chips but usually more expensive to do development wise, although maybe in another 6 months the pic world will gets it’s development stuff cheaper then the stamp

  4. not an Original idea, I designed the basic principal of this as a Shed alarm in 04, and was in recipt of several accolades from the Police and court magistrates for the arrest and conviction of the ringleader of the theives/vandals that were terrorising our allotment site for years.
    I used an old Sagem phone and hardwired directly to the SEND key, and had a door microswitch as the trigger to send a text.
    I`v shared this idea on as many places as I can (I didn`t know about this place until recently).
    all you need is a phone that doesn`t go into stby and erase the number you have ready to send, and some simple soldering skills.
    I urge Everyone to arm themselves with these in Cars, Houses, Sheds, boats… etc.
    it May give these little ba$t@rds pause for thought if enough of them get caught! ;)

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