Make03_2005: DIY - Home
Pdf | 5 pgs | 1 mb
Download...
Mirror
The gift of life should not be wasted anymore, instruct each other in goodness, a lot of good to each other, trying to help each other will make a more meaningful life for themselves and the people.
Use a cigar box and twine to build a sweet-singin' three-string guitar. For somethingDownload...
completely different, warp an innocent toy musical keyboard into an irresistibly
twisted electronic noise factory. For dessert. savor the hidden intricacies of
flash-frozen reality with ultra-fast strobe photography.
Vintage guitar amplifiers are available on eBay --- brands like Fender, Vox, Marshall, Acoustic, and Sunn. We'll show you how to restore one of theses old amps and make it sounds as good or better than the day it was made.Download...
Build a relay board that synchronizes lights, motors, and other electronical devices to a scary soundtrack playing on a computer, and create spooky haunted house special effects!Download...
Launch potato projectiles 200+ yards with this stun-gun triggered, high-powered potato cannon with see-thru action (Good thing potatoes are biodegradable).Download...
THE FINE ART OF MAKING "FRANKENMICE"Download...
This project turns an analog computer mouse into a robot that'll delight friends and wow workmates down on the cube farm. Mousey's behavior is fittingly mouse-like. It scoots quickly across the floor, thanks to lively little motors. And when the critter crashes into anything, it speeds off in the opposite direction.
The robot's "brains" are an ingenious hack based on an audio operational amplifier (op-amp), an 8-pin chip that's normally used to drive answering machine speakers and other lo-fi equipment. Following Randy Sargent's pioneering design (see page 102 , Mousey repurposes this chip to boost light-sensor input to motor-powerable levels. The result is simple, fast-reacting analog circuitry that fits inside a mouse case.
It's easy to make a small batch of biodiesel that will work in any diesel engine. You don't need any special equipment - an old juice bottle wilI serve as the "reactor" vessel - and on such a small scale you can quickly refine your technique and perform further experiments. After a few liters' worth of experience, you'll know if you've been bitten by the biodiesel bug.Download...
The principle behind biodieseling is to take vegetable oil (either new or used), and process it into a fuel that's thin enough to spray from a regular diesel engine's fuel-injection system. This is done chemically, by converting the oil into two types of compounds: biodiesel, which shares the original oil's combustibility, and glycerin, which retains the oil's thick, viscous properties. Drain away the glycerin, and you're left with a fuel that you can pour into any diesel vehicle with no further modification.
Once you get to the far side of the learning curve, making biodiesel is very much like cooking. In fact, a commercial biodiesel production plant shares more in common with a large-scale bakery than a petroleum refinery. There's organic chemistry involved in baking a cake, but most bakers wouIdn't consider themselves organic chemists.
...
This book presents the basic anatomy needed to interpret modern sectional images.Download...
In making a diagnosis from sectional images, even experienced diagnosticians must adapt their thinking to the sectional portrayal of anatomic features. The Pocket Atlas of Sectional Anatomy aims to facilitate this process by presenting the two modalities that have the greatest practical importance in modern sectional imaging: computed tomography and magnetic resonance imaging.
The importance of these modalities rests partly on their high resolution. So many of the images were produced with 3-tesla instruments. We wish to express our gratitude to the manufacturers, Siemens and Philips.
We have attempted to provide vivid, comprehensive coverage of sectional anatomic details while still making the book compact and easy to use. The four-color illustrations were considered an essential part of this goal to maintain clarity despite the quantity of information.
...
UPGRADING NOSTALGIA WITH THE ATARI 2600PCDownload...
I'm a historian of retro videogame systems and enjoy playing games on many different systems. I have a personal connection to the Atari 2600, which is probably related to my nostalgia for growing up with one. From an engineering perspective, the design of the Atari 2600 hardware is both simple and complex - yin and yang, so to speak - and it has enticed me for many years.
The goal of this project is to cram a full-featured PC system into a retro Atari 2600 videogame case. Not only is this a real challenge, but it's extremely rewarding.
...
Making your own printed circuit board (PCB) might seem a daunting task, but once you master the steps, it's easy to attain professional-looking results.Download...
Printed circuit boards, which connect chips and other components, are what make almost all modern electronic devices possible. PCBs are made from sheets of fiberglass clad with copper, usually in multiple layers. Cut a computer motherboard in two, for instance, and you'll often see five or more differently patterned layers. Making boards at home is relatively easy, but limited to one- or two-layer designs. Here's how to create a one-layer board for a blinking LED circuit. For PCBs, this exercise is the equivalent of a beginner's "Hello World" program in software.