Time delay door alarm

door_alarm_finished.jpg

Have you ever accidentally left your front door ajar and had a pet escape? BlackCow at Homebrew Tech came up with a simple solution to this problem. The circuit is fairly rudimentary but a great example of using the basics to get the job done. Now, instead of having an alarm that sounds as soon as the door is open, he has a 30 second delay. This helps avoid the “boy who cried wolf” effect also known as the “vista security warning” effect of being bothered too many times for a non issue.  We also have to say that we like his taste in blog layouts.

Courtesy of Homebrew Tech via Hacked Gadgets

Tags: , , ,

3 Responses to “Time delay door alarm”

  1. I enjoy your style, the inescapable fact that your website is actually a tad bit different makes it so fascinating, I get completely fed up of viewing same-old-same-old just about all of the time. I have I merely happened on this web page by you Many thanks.

  2. JAMES says:

    CheapTabletsOnline.Com. Canadian Health&Care.No prescription online pharmacy.Special Internet Prices.Best quality drugs. High quality drugs. Order drugs online

    Buy:Nymphomax.Seroquel.Aricept.Prozac.Ventolin.Acomplia.Lasix.Benicar.Female Pink Viagra.Amoxicillin.SleepWell.Buspar.Advair.Lipitor.Zocor.Cozaar.Zetia.Wellbutrin SR.Female Cialis.Lipothin….

  3. I really don’t mean to become off topic here, but I think that your current web hosting is actually a little screwy these days, simply because Now i am encountering plenty of empty webpages. It occurs more often every time I post a comment.

Leave a Reply