simple home alarm system pcb

Posted on Feb 6, 2014

This Home Alarm System is simple, secure, fast and cheap. It`s only few components with maximum security with Rolling Code TX and Shock Sensor with variable sensitivity. The alarm module can be assembled in only 2 hours and it don`t need manual preset. Home Alarm System with this characteristics is the most cheap system and the total cost could be

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reduced using a normal external sounder (escl. AG8). GSM module will be add in the future for a remote control. The blue led connected to the pin RA3 of micro controller is used like a memory to know if the home alarm system has been activated by an event and its reset after a reactivation. The red led connected to the power supply before the 1N5406 diode is used to check the power supply connection. Of course the other 3 micro led red near the relays are used to check the output state.

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