Build Your Own ELECTRIC MOTORCYCLE The finished project is a 1981 Kawasaki KZ440, converted to electric. It is powered by four Optima Yellow Top sealed (AGM) lead-acid batteries, that drive a Briggs & Stratton Etek electric motor. The speed of the motor is controlled by an Alltrax brand "AXE" programmable controller that can run at up to 48 volts and 300 amps. Contrary to popular belief, and electric motorcycle is NOT silent, but is CONSIDERABLY quieter than a typical gas cycle. The cycle is GEARED to 45 mph, has fairly good acceleration, no clutch or transmission. The cycle recharges from the wall, through a renewable energy program, and if there is a blackout, I can actually run my house off my electric motorcycle! In this Instructable, I'll walk you through the work required with the motor, batteries, controller, and mounting all components, including showing you some low-tech paper and cardboard "CAD" tricks. Your Project But what do you want? Give some thought to what cycle you would like to convert.
Digital Designs for Physical Objects The cat Made by PP3DP Sep 8, 2010 Source Description No description provided. Top ReplicatorG is a simple, open source 3D printing program - ReplicatorG Tweakie, Tweakie.CNC, CNC, router, mill, engraver, vinyl cutter, laser. How to Build a Robot Tutorial - Society of Robots Introduction to Gears No good robot can ever be built without gears. As such, a good understanding of how gears affect parameters such as torque and velocity are very important. In this tutorial I will first talk about the basics of gears, how to use them properly along with simple equations, and then I will go into specific types of gears. Mechanical Advantage, Torque vs. Rotational Velocity Gears work on the principle of mechanical advantage. This means that by using different gear diameters, you can exchange between rotational (or translation) velocity and torque. As with all motors, by looking at the motor datasheet you can determine the output velocity and torque of your motor. With gears, you will exchange the high velocity with a better torque. Torque_Old * Velocity_Old = Torque_New * Velocity_New Torque_Old and Velocity_Old can be found simply by looking up the datasheet of your motor. 3 lb-in * 2000rps = Torque_New * 300rps 3 lb-in * 2000rps = 5 lb-in * Velocity_New
L’impression 3D, ce sera formidable… s’ils ne foutent pas tout en l’air ! | Dico Micro L’impression 3D est en train de naître sous nos yeux. Demain il sera ainsi possible de reproduire toute sorte d’objets chez nous aussi facilement, ou presque, qu’un texte numérique se couche sur le papier à l’aide de notre bonne vieille imprimante 2D. Les conséquences potentielles de la démocratisation d’un tel outil donnent le vertige et suscitent espoir et enthousiasme parmi les makers du monde entier[1]. Pour rappel, l’impression 3D est une technique qui permet de produire un objet réel à partir d’un fichier CAO en le découpant en tranches puis en déposant ou solidifiant de la matière (plastique, cire, métal…) couche par couche pour, en fin de compte, obtenir la pièce terminée. C’est l’empilement de ces couches qui crée un volume. Si le concept et la technologie vous semblent encore un peu obscurs, je vous invite à regarder cette courte vidéo. Pour le moment on se déplace donc chez ceux qui disposent d’une telle imprimante, imprimante encore rudimentaires dans ses possibilités.
Build Your Own CNC Router, CNC Machine, or 3D Printer EMC² et LinuxCNC Samedi, 19 Février 2011 21:10 Benjamin Voilà une découverte qui m'a rapidement conquis. EMC² est un logiciel open source permettant d'interpréter les programmes GCode et de commander une fraise numérique CNC. Ce logiciel tourne sous linux. Lien de linuxCNC où vous trouverez le cd d'installation à télécharger gratuitement Les avantages En plus de la gratuité du logiciel, j'ai constaté rapidement que ma machine avait moins de vibration en utilisant EMC². J'ai également trouvé le logiciel très intuitif et comme nous allons le voir, configurer le programme pour commander une CNC est très simple. L'écran principal possède une vue simulée de la pièce que l'on va usiner et montre l'état d'avancement lors du travail. Le logiciel repose sur un OS récent ce qui permet l'utilisation de clé usb, du réseau, ... pour communiquer les fichiers. Configurer une machine Pour cet article, nous allons voir comment configurer une machine CNC dans EMC². 1. 2. 3. 4. 5. 6. 7. 8. Bon amusement! Liens
How to Extract DNA from Anything Living First, you need to find something that contains DNA. Since DNA is the blueprint for life, everything living contains DNA. For this experiment, we like to use green split peas. Spinach Chicken liver Strawberries Broccoli Certain sources of DNA should not be used, such as: Your family pet, Fido the dog Your little sister's big toe Bugs you caught in the yard Step 1: Blender Insanity! Put in a blender: 1/2 cup of split peas (100ml) 1/8 teaspoon table salt (less than 1ml) 1 cup cold water (200ml) Blend on high for 15 seconds. The blender separates the pea cells from each other, so you now have a really thin pea-cell soup. Step 2: Soapy Peas Pour your thin pea-cell soup through a strainer into another container (like a measuring cup). Add 2 tablespoons liquid detergent (about 30ml) and swirl to mix. Let the mixture sit for 5-10 minutes. Pour the mixture into test tubes or other small glass containers, each about 1/3 full. Why am I adding detergent? Step 3: Enzyme Power Use meat tenderizer for enzymes.
MicroSystems World CNC - PC Based CNC Controller - WinCNC CNC Software - CNC Controller Software - WinCNC - CNC Motion Control - "Home" Forget WiFi, Connect to the Internet Through Lightbulbs - Technology - GOOD Whether you’re using wireless internet in a coffee shop, stealing it from the guy next door, or competing for bandwidth at a conference, you’ve probably gotten frustrated at the slow speeds you face when more than one device is tapped into the network. As more and more people—and their many devices—access wireless internet, clogged airwaves are going to make it increasingly difficult to latch onto a reliable signal. But radio waves are just one part of the spectrum that can carry our data. One German physicist, Harald Haas, has come up with a solution he calls “data through illumination”—taking the fiber out of fiber optics by sending data through an LED lightbulb that varies in intensity faster than the human eye can follow. Haas says his invention, which he calls D-Light, can produce data rates faster than 10 megabits per second, which is speedier than your average broadband connection. Photo (cc) via otto-otto.com