Most people are under the impression that pennies are made of copper. This is only partially true. Before 1982, pennies were made of 95% copper and 5% zinc. Because the price of copper was rising, the U.S. Mint had to change the penny’s composition to keep the cost of the coin under one cent.
Lord Kelvin’s Thunderstorm is a type of electrostatic generator invented by British scientist William Thomson, better known as Lord Kelvin, in 1867. Kelvin referred to the device as his water-dropping condenser. The device uses falling drops of water to generate voltage differences by using electrostatic induction, which occurs between interconnected, oppositely charged systems. … Continue reading Lord Kelvin’s Thunderstorm
A microcontroller is a small computer on a single integrated circuit containing a processor core, memory and programmable input/output peripherals. Microcontrollers are designed for embedded applications, in comparison to the microprocessors used in personal computers or other general purpose applications. Microcontrollers are used in a wide variety of automatically controlled products and devices. Microcontrollers … Continue reading How to Make an Electric Microcontroller Patch
Arduino Pro Mini The Blinking top hat was created by a couple of do-it-yourselfers to give as a gift at their friends’ engagement party. As the hat is tilted it lights up with rotating effects. The blinking top hat combines white LED strips, a small Arduino Pro mini and an accelerometer to obtain the really … Continue reading Make a Blinking Top Hat
This beautiful Moonlit LED flower is simple and inexpensive to make right at home. We will show you how with our basic tutorial on how to sew this soft circuit flower. The first thing you will need to do is to cut, out of your fabric, the petals and a wrapper … Continue reading How to Make a Moonlit LED Flower
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