Home › Magazines › 2002 › December › Door Knocker Bell

Door Knocker Bell

Published in issue 316, December 2002

If you have an old house, it’s nice to have only a door knocker and no doorbell, since ‘back then’ no-one had a doorbell and it destroys the illusion of authenticity. Although a door knocker makes quite a racket, if you happen to be in the garden, the attic or the cellar it might not be enough. The circuit shown here solves this problem by acting as a sort of ‘electronic extension’ for the door knocker.

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Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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