Secret-Knock Gumball Machine
Make a cute candy vending machine that only dispenses treats when you knock the secret rhythm on its front panel.
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or drill press
Diet Coke and Mentos Fountain Nozzle
The reaction of when a regular mint (or fruit) Mentos is dropped into a bottle of diet Coke can create a fountain of soda. Without a nozzle, you will have a Coke fountain only about 5 feet high. With this, you can have a Coke fountain up to 10 feet! Here’s how to make your […]
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Arduino LED Fuel Gauge
Arduino Fuel Gauge: A few months ago, I hit a pot-hole while driving my 1974 Dodge Dart and my fuel gauge immediately went to “E.” For a split second I thought I lost all of my fuel! My father-in-law suggested I drive backwards over the pothole to fix the gauge. It didn’t work. I researched […]
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Steam-Powered BoilerBot
You may be familiar with the battery-powered, pager motor-driven, toothbrush head bristle bot. This project turns that modern classic into a retro-fantastic, Steampunk delight by replacing the battery with a fire stoked steam boiler, the pager motor with a single-action, oscillating piston steam engine, and the toothbrush head with a pair of wire brushes!
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Mini Gun Madness
The basic construction is relatively simple, with a standard 1/2 inch copper pipe serving as the main support for lightweight tubes (barrels) that spin and emit light when they pass in front of a high intensity LED source. A cheap cordless drill — something from Harbor Freight, for example — would be the easiest way […]
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Recycle Office Paper into Blank Books
Here I will give a simple bookbinding tutorial using a Japanese stab-binding technique for making blank books from paper that is printed on one side. These books are useful for all kinds of notes, and tell an interesting story about the place they came from. I work in the computer lab at my school, where […]
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