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computers:arduino:start [29-May-2019 15:40] – [Marionette] Steve Joyntcomputers:arduino:start [02-Feb-2025 16:14] (current) – external edit 127.0.0.1
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 So the idea I'm thinking of is to make a small Arduino project that can detect someone tapping on the door, and respond by ringing the doorbell. The plan is to use a piezoelectric sensor to detect vibrations, filter out any background noise, then use a relay to "press" the doorbell switch for the visitor. So the idea I'm thinking of is to make a small Arduino project that can detect someone tapping on the door, and respond by ringing the doorbell. The plan is to use a piezoelectric sensor to detect vibrations, filter out any background noise, then use a relay to "press" the doorbell switch for the visitor.
  
-Another way I could detect someone knocking would be to provide an ornate brass door knocker. This could be wired up on the inside of the door so that it shorts together two pins of the Arduino when it is at rest. When the visitor lifts the lever off the anvil, it would break the circuit and ring the bell before they've had a chance to knock on the door.+Another way I could detect someone knocking would be to install an ornate brass door knocker. This could be wired up on the inside of the door so that it shorts together two pins of the Arduino when it is at rest. When the visitor lifts the lever off the anvil, it would break the circuit and ring the bell before they've had a chance to knock on the door.
  
  
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  • Last modified: 02-Feb-2025 16:12
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