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.
ReplicatorG is a simple, open source 3D printing program - ReplicatorG Make CNC DIY Projects & Products | MakeCNC.com 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
Build Your Own CNC Router, CNC Machine, or 3D Printer 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)
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
Tweakie, Tweakie.CNC, CNC, router, mill, engraver, vinyl cutter, laser. Solar Tracker in the Internet Cloud The major system components identified in the block diagram: 90 Watt solar Panel Two axis motion platform constructed from 2x4’s complete with wooden peg gears and re-used curtain rod/pole. Custom electronics – Electric Imp connected to stepper drivers, IO Expander and 6 Axis MEMS accelerometer/magnetometer Rechargeable battery – retired unit from my motorcycle as it is no longer capable of turning the engine over. Solar Charge Controller – cheap unit from ebay to make sure the battery doesn’t overcharge. Smartphone or web browser – monitoring status and remote control. The tracker circuit includes a tilt compensated compass - the math was coded from an application note. This whole thing could be done a lot more simply, but I was intrigued by the Internet Of Things made possible by the Electric Imp. 1. 2. 3. 4. 5. 6. 7. 8. 9. There is plenty more to learn with this project but I had to cap the list somewhere!