Hot Hacks, Mods & Circuitry Posts

How To: Make an electrophorus and use it to create electricity from your cat

An electrophorus is a type of capacitor that generates electrostatic energy. Most of you probably know this force as static electricity, the domain of door handles and polyester shirts. It can be used for all sorts of other fun science experiments though, and this video will show you how an old hard drive, some plastic, Styrofoam, foil, a cat, and other simple materials can be used to make a a simple functioning electrophorus.

How To: Learn about the tools and components used in basic electronics

Electronics are the most important new thing people have created in the last hundred years, and learning how to use them will make you much more able to function in modern society. If you want to learn about electronics without going to a class or anything so formal, this excellent video series will teach you everything you need to know to get started. This video, the first in the series, will teach you about the basic tools and components you'll need to work on electronics projects, includin...

How To: Build an analog internet meter out of an Arduino Ethernet Shield

The internet has created amazing new standards for how closely information can be followed. If you want a portable analog unit that will monitor one important piece of online info continuously and have some DIY electrical knowhow, watch this video. It will show you how to use an Arduino Ethernet Shield to make an internet meter to monitor email, stocks, and other online info on a simple analog display. You will need to know some PHP to make this work.

How To: Build a handheld version of the TSA's microwave-based body scanner

With the TSA's full-body scanners occupying a great deal of airports nationwide, the debate remains as to whether air travelers should continue to be subject to immoral security techniques and possible health risks due to the x-ray scanning devices. The "advanced imaging technology" may help keep obvious weapons out of major airports, but scanning naked bodies seems more voyeuristic than crucial to national security. But while the argument continues, one woman is taking a stand… well, not rea...

How To: Make a digital color organ with high-powered LEDs

Collin of MAKE is back with another inspiring project. You may remember his analog light organ. Well, he's decided to upgrade and make his light organ a digital one. One thing to watch out for is the amount of heat emitted by high-powered LEDs, but as long as you find a way to dissipate the heat, this will work out just fine. Watch, and don't forget to read the thorough instructions before building this!

News: Touchscreen Made With Blocks of Ice

Far away in Finland, where the ice is plentiful and the temperature is bitter cold, the Finnish Nokia team have created the world's first touchscreen display made entirely of ice. Constructed with massive slabs of river ice, the display was first shaped into neat square slabs with a chainsaw, and then smoothed into a watchable surface with a powerful heat gun.

News: Touchpad Made with Paper and Pencil Scribbles

Who says nothing productive ever came out of doodling? Certainly not the hacker responsible for this fun (and at least somewhat functional) paper-and-pencil touchpad, which takes advantage of the natural conductivity of graphite: There isn’t much to explain here. It just uses pencil graphite on paper as a kind of two dimensional potentiometer. Four voltage dividers between 5v, 2M ohm resistors, the paper, and my grounded finger feeds signals from each corner into an Arduino. The Arduino does ...