Home Alarm System with this characteristics is the most cheap system and the total cost could be 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.
Here you can download the last version of The Home Alarm System date 10 July 2007:
Home Alarm System in detail
11 Comments:
What is the cost of the project?
BPO work from home
Yes, i would love to know what the cost of this project is too?
I have been working on something similar and i would love to do this specific project that you are doing here.
This would be really great for a project i'm doing for my major. I would really enjoy your reply because this would be a really great project to take on. I love how you used the blue led connected to the pin RA3 of micro controller that you used as a memory. Absolutely brilliant.
Thanks and keep up the good work.
I look forward to your reply,
Leland
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Nice blog for electronic hobbies!
Thank for articles.
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Home alarm systems should be introduced commonly. They serve quality protection to your properties.
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