How to Make a Three-Pendulum Rotary Harmonograph A harmonograph is a mechanical device that uses swinging pendulums to draw pictures, believed to be originally invented in 1844 by Scottish mathematician Hugh Blackburn. This 3-pendulum rotary type of harmonograph gives a wide variety of pleasant results, and is fairly easy to build once you've settled on a design and have acquired the appropriate materials and tools. This is a great project to do with kids and can result in endless experiments creating new types of geometric designs. Skip to More Results and Movie Two lateral pendulums swing back and forth at right angles to each other with arms connecting to a pen. One moves the pen from side to side, and the second moves it from front to back on the paper.
Quadcopter build log 1. Introduction This page will be a walktrough on the creation of my quadcopter. 2. Should you decide to build your own frame, start with drawings as every engineer does. Cross (aluminium square tubes from the local DIY shop) For the Dutch, Hornbach is your next stop ;-) Lower level of the "Hamburger", with light switch, power plug, Spektrum satellite receiver and LiPo low battery warner. 3. I decided to make a 'power ring' to provide the ESC's and other equipment with power. After supplying your ESC's with power, you have to program each ESC to let it function properly for a Quadcopter. Typical programming card Quadcopter setup. 4. Before you make your control board unreachable by wiring etc, be sure it's programmed with the latest firmware. Pin 1 on the KK board is located here: The Lazyzero KK multicopter flash tool is excellent for upgrading your control board to the firmware of your liking. The control board should contract less vibrations from the motors as possible. 5. 6. !! 7. 8.
Nanobots Could Perform Surgeries in The Future Putting a robot in your eye could be the next innovation in medical technology. Researchers in Zurich are building nearly microscopic bots to help with delicate surgeries. The bot has a retractable needle for probing and a body that is only a quarter-millimeter in diameter — which is the equivalent of about 4 human hairs. This means it's as thin as a surgical scalpel and its needle is just as sharp. Given the size of the robot, any surgery could be non-invasive and minimal. The system is not yet ready for humans, though researchers did conduct a first round of experiments with the technology by exploring the eye. Image Courtesy of Youtube/03dom
DIY CNC Router Plans : How to Build NOTE: I originally posted this on my arts and crafts blog, Make It With Jason, and you're welcome to go visit and check out my other tutorials, reviews, and step by step drawing and painting lessons. Ever since I saw my first CNC, I knew I wanted to own one. I'm a realist though, and I also knew that I wouldn't own a REAL $20,000 one. So, on a whim this spring, I decided to design and build a homemade 3-axis Computer Numerical Controlled milling machine myself. I looked all over the web and decided to build one using drawer slides as my rails, an arduino as my microcontroller, and try to keep everything within the $300 mark. So far so good. So, without much ado, I am going to show you the steps I took to build my diy cnc router project (please realize, as of April 16th, 2013, this project isn't quite finished--in fact, it's at the halfway mark). Onto the Instructable!
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10 Gadgets for Your High-Tech Home There's a reason we flip through Skymall every time we board a flight, dog-earing catalogue pages with giant floating trampolines and vibrating bath mats — we love novelty, and now we expect it from our gadgets, too. We carry around a ton of digital capability in our smartphones, so now we demand the same intelligence from our homes. These 10 gadgets will optimize, simplify and beautify your home — that is, if you can afford the price tags. What was your favorite tech purchase for the home? 1. Kohler's eco-friendly Numi toilet is stylishly efficient for the modern bathroom. Price: $4,990 2. Monitor your environment with this personal weather station by Netatmo. Price: $179 3. Designed by NASA scientists, the Airocide purifies toxins in the air that can worsen symptoms of asthma or allergies. Price: $799 4. These days, you're more likely to forget your house keys than your smartphone. Price: 99 EUR, approx. $128. 5. Price: 399 EUR, approx. $518 6. Price: Approx. $3,000 7. Price: $10,900 8. 9.
How to Make a Three Axis CNC Machine (Cheaply and Easily) A salute to those who have laboured through to this point (and to demonstrate that it is reproducable) Here are some pictures of other peoples machines. Photo 1 - Chris and his friend put together this unit; laser cutting the parts out of half inch acrylic. Not only does it look super it must weigh a ton. Photo 2 - Sam McCaskill has finished his desktop CNC machine and it's looking really really nice. Photo 3 - Angry Monk's - With MDF pieces cut on a laser cutter and drive converted from toothed belts to threaded rod Photo 4 - Bret Golab's - Bret has completed his and gone through the extra step of getting it setup to work with Linux CNC (a task I attempted and was foiled by complexity). (If you have built one and would like it featured here, please send me a PM and we can arrange for the sending of photos)
Foam-squirting quadcopter becomes a flying 3D printer The swiftlet may not look much different than other little birds, but it has one unique ability – it builds its nest out of its own saliva. Inspired by the swiftlet, scientists at Imperial College London's Aerial Robotics Lab have created a robotic quadcopter that can extrude polyurethane foam while in flight. By targeting where that foam goes, it can build up simple structures, essentially becoming a flying 3D printer. The technology could have some very important applications. View all Developed mainly by Graham Hunt and other members of a team led by Dr. In its current form, the aircraft uses GPS and an external system of 16 infrared cameras to identify targets upon which to spray the foam, within an indoor lab. Down the road, however, Kovac's team hopes to create fully-autonomous UAVs equipped with their own high-speed cameras and 3D depth senors, that could function in a variety of chaotic, real-world conditions. Source: Imperial College London via New Scientist
Build a Touchless 3D Tracking Interface with Everyday Materials Combine low-tech materials with some high-tech components and build a completely Touchless 3D Tracking Interface. Explore capacitive sensing by using several panels of cardboard lined with aluminum foil. These panels, when charged, create electric fields that correspond to X, Y, and Z axes to create a 3D cube. With the aid of an Arduino microcontroller and some supplied code, movements inside the cube are tracked as your hand moves around inside the field. For Weekend Projects makers looking for an introduction to Arduino, this is a great project to learn from. Once you’ve gathered all your parts, this project should only take a couple hours to complete – you’ll be playing 3D Tic Tac Toe before the weekend is over! Once your touchless 3D tracker is up and running, what you do with it is only limited by your own imagination! Sign up below for the Weekend Projects Newsletter to receive the projects before anybody else does, get tips, see other makers’ builds, and more. Related
DIY Polygraph Machine: Detect Lies with Tin Foil, Wire and Arduino DIY Polygraph Machine: Detect Lies with Tin Foil, Wire and Arduino Lying is awesome. From a very young age, children learn that flat out denying the truth gets you out of trouble and helps keep you calm in the face of horror. But what happens when you just have to know if someone, say, used your toothbrush? You could ask them to take an expensive and arduous polygraph test. If you're industrious and don't have the dough for a legit polygraph, you can make your very own galvanic skin response (GSR) device. Today, we will make a cheap GSR device and learn if our toothbrush is really safe after all. Materials ArduinoAluminum foilVelcroWire10k resistorBreadboard Step 1 Make the Electrodes GSR machines require an even and consistent connection to the skin in order to function properly. Begin by taping the exposed end of a wires to a sheet of foil. Adhere a strip of Velcro over the tape and cut off the extra foil. Last, add a single piece of Velcro at the end of the foil side. Step 3 Load the Code