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Gadget Freak Case #189: The Microcontroller-Operated, Pneumatically Actuated RLD

When Ed Nauman worked in his garage machine shop, the noise levels were often so loud he couldn’t hear the doorbell. He resolved the situation by creating a microcontroller-operated, pneumatically actuated doorbell... or a "Really Loud Doorbell."
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6/24/2011 | 2 comments
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William K.
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Loud doorbell
William K.   7/1/2011 8:02:54 PM
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If he were able to slow the cycling of the cylinder a bit, and arrange for the hammer to bounce off the bell, it would be even louder, and it would sound much better.

Rob Spiegel
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Re: Loud doorbell
Rob Spiegel   7/8/2011 5:59:01 AM
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You're right, William. At the very end, you can hear how the clanging would sound if the speed of the hammer were not so rapid. The last clang has a clear, full sound.

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