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Knock Block: a modern knocking frameworkMan has long wrestled with Time. Also, with knocking on things and not getting the time of day. We propose a k...
What's inside that rich mahogany exterior? An Arduino that reads vibrations from a piezoelectric sensor and relays back information with a solenoid ta...
Exactly how you make your case is up to you, but ours was carved from a block of mahogany by a ShopBot CNC machine. Our design was simple so we made a...
Tape the piezo at the base to something hard, so it can vibrate more freely. A cheap substitute for the piezo element is an old speaker, which also ca...
You'll need to get a high-current transistor (we used a TIP31C) to act as a switch for the solenoid - if it's connected directly to the Arduino it may...
// Arduino code for Knock Block // 2009: ReeD Martin, Ned Burns, Jon Ward, John Kestner // constants: const int ledPin = 12; // the solenoid ci...
Here you can see the battery resting on one side of the acrylic bracket, the Arduino on the other side with the transistor for the solenoid sticking i...
... and enjoy your Knock Block.
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