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Subject: Re: how to design security system using microcontroller and telephone line

Date: 09/01/02 at 10:29 PM
Posted by: Ariffanan
E-mail: anaffira@yahoo.com
Message Posted:

In Reply to: Re: how to design security system using microcontroller and telephone line posted by Michael Sprayberry on 08/25/02 at 4:10 PM:

Sir ,

At first, i am very appreciate because the response that you gave.Thank you.

The thing that i want you help me is,the design of circuit for security system.It include the design of circuit for connect between sensor, microcontroller(68HC11),and alarm system.The alarm system consist a siren and auto dialler.The auto dialler will connected to the telephone line.When the sensor trigger it will send a signal to the microcontroller and then the microcontroller will send a signal to the alarm system to activated it(a siren will make noise and auto dialler will make an automatic dialler). I am also want you show me a programming base on the operation of the system.

Thank you for your cooperation.


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