Here are more than a few do it yourself projects that I am interested in. A few are even started by yours truly. Aug 27
How to Spot Planet Venus in the Sky | Phases of the Planet Venus | Skywatching, Telescopes & Astrophotography Ever since it returned to the evening sky just over a month ago, our "sister planet," as Venus is often called, has been the centerpiece of the current evening sky. As Venus travels around the sun inside the Earth's orbit, it alternates regularly from evening to morning sky and back, spending about 9 1/2 months as an "evening star," and about the same length of time as a "morning star." Some ancient astronomers actually thought they were seeing two different celestial bodies. They named the morning star after Phosphorus, the harbinger of light, and the evening star for Hesperus, the son of Atlas.
Arduino Astronomical Clock for Automatic Light Control Arduino Astronomical Clock for Automatic Light Control There are many ways to automatically control these lights. The gadget I was using (until I completed this project, that is) was a simple mechanical timer. This product allows you to set separate turn-on and turn-off times and those repeat every day. The disadvantage of this product is that, as the seasons change, you need to constantly adjust the turn-on and turn-off times. As illustrated in Figure 1, the variation over the year (in sunset time in this example) is very significant even at my Northern California latitude, with almost three hours difference between the earlier and latest sunset times!
Gelandagan's Metal Marker MkI - Electro Etcher
ArduinoBoardEsplora Overview The Arduino Esplora is a microcontroller board derived from the Arduino Leonardo. The Esplora differs from all preceding Arduino boards in that it provides a number of built-in, ready-to-use setof onboard sensors for interaction. It's designed for people who want to get up and running with Arduino without having to learn about the electronics first. For a step-by-step introduction to the Esplora, check out the Getting Started with Esplora guide. The Esplora has onboard sound and light outputs, and several input sensors, including a joystick, a slider, a temperature sensor, an accelerometer, a microphone, and a light sensor.
3V to 24V Variable Power Supply This 3V to 24 volt variable-regulated power supply can be adjusted from 3 to 25 volts and is current limited to 2 amps as shown, but may be increased to 3 amps or more by selecting a smaller current sense resistor (0.3 ohm). The 2N3055 and 2N3053 transistors should be mounted on suitable heat sinks and the current sense resistor should be rated at 3 watts or more. Voltage regulation is controlled by 1/2 of a 1558 or 1458 op-amp. The 1458 may be substituted in the circuit below, but it is recommended the supply voltage to pin 8 be limited to 30 VDC, which can be accomplished by adding a 6.2 volt zener or 5.1 K resistor in series with pin 8.
Build a $360 synthetic aperture radar with MIT’s OpenCourseware
Your CPR certification for adults does not automatically mean you also know the correct way to perform CPR on a puppy. Chest compression for humans and dogs involve forceful motions, with one hand on top of the other on the surface of the chest. However, this sort of force may do more harm than good when dealing with a puppy. Learn the steps to modified respiration and CPR for puppies to increase their chance of survival. Want to put this graphic on your site? How To Give Your Puppy CPR - Infographic | Carrington.edu
Last week, we talked about how to transport dry ice on your trip, but what about using dry ice once you get where you’re going? Dry ice can help keep food cold or frozen during your camping trip when used properly. Here are a few tips to help ensure your dry ice will keep your goods colder longer. Pack frozen foods and chilled foods in separate containers. There are specific packing techniques for each type of good, which you can find in our basic packing post or our everyday uses guide.Make sure to pack enough dry ice to last throughout your trip. We recommend packing 5-7lbs of dry ice per day in each standard cooler you take with you.To prolong the life of your dry ice, insulate the cooler itself with blankets or sleeping bags during the hottest parts of the day, and keep it out of the sun.You can keep mosquitoes and other pests away from your campsite using our easy backyard bbq method.When you’re finished with your trip, you can simply leave the remaining dry ice at your campsite. Using Dry Ice on Your Camping Trip « Dry Ice Ideas | Penguin Brand® Dry Ice
Common Mistakes of Electronics Repair Many of us have been interested in electronics repair from a very young age, but to some, the interest could have started in our 40’s or even 50’s! No matter what your age, electronics repair is fun and this hobby can be turned into profits if you know what to do with your knowledge. It is very exciting when you discover that electronics repair is the field that is really meant for you. Day and night you search the web for more information about electronics repair and hope to be able to understand and solve electronics problems. common mistakes in electronics repair
AKA: Snijlab-style living hinges, Sninges, Laser cut hinges, or my prefered title: Lattice Hinges Flexi-Acrylic Test by Solarbotics, on Flickr After this style of hinge popped up again, this time on Makezine, I was having a look at the linked project guide and at how they worked and I realised that a bit of mathematical modelling could lead to better designed hinges. This could mean fewer rounds of trial-and-error prototype tests, which would reduce the cost of using lattice hinges in a project, and better fatigue resistance, meaning the hinges could be used for moving parts instead of just for static bends. Download links for the test specimen files are included at the end of this post. This style of hinge appeared recently in the work of Snijlab, a Dutch laser cutting workshop when they showcased a folding notebook cover mode from a flat sheet of laser cut plywood. Laser-cut Lattice Living Hinges
Editor’s note: Rick Kelly (@_rickkelly) is an adjunct political science professor at BYU-Idaho and MBA student at UNC-Chapel Hill. Remember SOPA? In case you’ve forgotten already, earlier this year some Congressional legislators attempted to protect intellectual property through the Stop Online Piracy Act (SOPA). The language in the bill was far-reaching and ambiguous; thus prompting concern that application of the law would extend beyond its intent. TechCrunch’s own John Biggs explained that SOPA “would allow the US government to essentially ‘turn off’ part of the Internet that it doesn’t like.” The Next Battle for Internet Freedom Could Be Over 3D Printing
Recycle, reuse – thats the motto we have all been trying to live by ever since this “global warming” issue came into effect but now it just got a bit easier. Introducing the Kinkajou Bottle Cutter (yes the name explains itself). Read more after the jump! You can now make use of your used beer bottles by simply using this tool.
KMODDL is a collection of mechanical models and related resources for teaching the principles of kinematics--the geometry of pure motion. The core of KMODDL is the Reuleaux Collection of Mechanisms and Machines, an important collection of 19th-century machine elements held by Cornell's Sibley School of Mechanical and Aerospace Engineering. What is Kinematics?
Why Fixers Will Save Our Planet
Circuit Scout: Electronics Circuits Search
flexible sheets of wood dutch digital manufacturing company snijlab has developed new possibilities of working with wood. using laser cutting technique they make tiny cuts in wooden sheets that allow it to be flexible. once processed the wood can be fully bent in both directions without breaking. snijlab makes wooden booklets with the bendable wood technique. the cover is a single sheet of wood cut from a beautiful birch plywood and finished with a clear varnish. cuts in the middle allow the cover to be flexed open and really; it's only wood! folding wood
A 3D printed shoe from the Cube At CES 2012 3D Systems presented their solution to the growing debate about whether and when 3D printing will cross over to the mainstream. It came in the form of the Cube, priced at $1,299, a consumer plug-and-print product they hope will have the crossover appeal to find its way into every home, nudging the iDevices and games consoles out of the way to the top of the 2012 Christmas list. MakerBot Industries, another well-established 3D printing firm, has also made its claim to the home market with the Replicator ($1,749), a two-color printer they also launched at CES.
It is my personal belief that many people own bicycles, and that many of those people aren't interested in riding for pleasure / exercise when it is raining, snowing, dark, etc. outside, and that many of those people would ride their bicycle indoors if they had a fun and challenging device that allowed them to do so, and that many of those people would build such a device themselves if given the encouragement and advice to do so. Thus, if my calculations are correct, this Instructable my indeed be appropriate for, and benefit many people. DIY Bike Rollers from Jason Sauers on Vimeo. DIY Bike Rollers
List of tool-lending libraries
The Wood Bending
Smelting iron ore in a microwave
How Do You Start a Fire With Ice?
How to dismantle Toshiba Portege M205 laptop. Toshiba tablet PC disassembly guide.
Crash course: Embedded programming with Arduino
Want To Make A Giant Telescope Mirror? Here's How
Printrbot: The Perfect Beginner 3D Printer Can Expand Itself
Soon you'll 'evolve' yourself new furniture using 3D printing
Layer by Layer
Transistors made from cotton yarn, t-shirt computers incoming
iModela, Roland's $1000 hobbyist CNC milling machine
Monitor: More than just digital quilting
HOW TO: Make silver ink that conducts electricity – Boing Boing
Make a Musical Greeting Card to Annoy or Delight Your Friends and Family
How to Make Toy Air Ships, Ray Guns and Much More from Old Tin Cans
Beat Bearing Sequencer
Connecting Batteries in Series or Parallel
HACK A WEEK
Automatically weed the celebrity gossip out of your TV time
Bypassing manufacturer-imposed battery lockouts
Output up to 768 PWM signals from one Arduino
Experimenting with bridge rectifers for AC to DC power conversion
LED Plant Growth Light
Succulent Wall Art
Build Your Own Salad Table | Apartment Therapy San Francisco
Fab Lab Tulsa | MIT Fabrication Laboratory within Tulsa's Kendall-Whittier Neighborhood
Andrew S. Harmon
Sample Club - Free Laser Engraving and Cutting Files and Sample Ideas
Fab Lab Tulsa
America del Norte
Time Lapse Photography