How to Build a GSM Auto Dialler for less than £15
This video will show you how to build an automatic GSM auto dialler triggered by a car/ home security/ fire alarm.
There is No Programming required and requires only some simple modifications to a mobile phone and some soldering.
Great for when you are away on holiday etc… when the alarm is triggered, the phone will call any number you set and let you know that your home/ car alarm has been triggered.
A GSM auto dialler may reduce the cost of your home/ car insurance.
*A simple 555 monostable circuit may be needed to create a short pulse from alarm panels that put out a continuous high signal*
Link to schematic with component values:
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