Could u help me to make a home security circuit , in which my requirement is that when I became activate my security lock then wichout my permission if any one enter in my home a call became comes on my cell phone or land line phone .
It is simple. Buy a phone that has a memory dialling button. Program the button to dial your phone. Activate the button with a switch that turns on when the door or window is opened.
Or, use a computer with a voice modem. The security system itself is a simple parallel port interface (like on this website) or a cheap USB experimenters interface. Connect up you switches/motion detectors to the inputs and then do all your work in software.
Haha, there are only a few people I know who would say, 'Use a voice modem". Aaron, you're such a computer guy! Haven't been on here in a long time! Good to see some of the regulars again!