3D Printing II. Openknit: a Reprap-inspired open source knitting machine. The Openknit project is a Reprap-inspired, open source hardware knitting machine that can produce an adult-sized garment from yarn and a digital file in about an hour.
The project includes plans for the machine, free/open software for designing clothes, and a promise to deliver STL files so you can print out the parts on your 3D printer. Knitting, crochet, and other textile arts are, of course, a longstanding form of 3D printing -- using machines to deposit, align and interlock a feedstock to form 3D objects. The Openknit garments are rather beautiful, as you can see from the Flickr set. If you're interested in understanding the underlying system, here's a good explanatory animation.
It shows a high degree of ingenuity and skill on the part of the designers. Presently, production outsourcing has become the norm: mass fabrication of goods at low costs improves corporate profit margins but pushes precarious labour conditions due to a race to the bottom in competing developing markets. Poppy, a 3D-printed humanoid robot that defies conventions. Puzzlebox Orbit: Brain-Controlled Helicopter by Puzzlebox. For the past two years Puzzlebox has been producing brain-controlled helicopters for classrooms and television.
Now comes the chance to fly your own. The Purpose Join the experiment. EMOTIV INSIGHT: Optimize your brain fitness & performance by Tan Le. Our mission to empower individuals to understand their own brain and accelerate brain research globally was set into motion with the launch of this Kickstarter campaign for Emotiv Insight.
Over the course of this campaign, you joined our community and pledged to change how people think about their brain and how we could use brainwear to improve how we live, work, and play. Kano Computer Kit Lets Anyone Build a PC From Scratch. If you grew up tinkering with building kits like Erector sets or Lego Mindstorms, you can probably appreciate how important such tools can be to a child’s early development.
Now, a Kickstarter team has created something similar that enables kids and adults alike to learn more about computers. Kano is a computer kit designed to help people of all ages assemble a computer from scratch, and learn basic coding skills. Powered by a Raspberry Pi computing module, the kit includes two instruction manuals, a custom case, an 8GB SD card, a keyboard, a speaker, a power plug, and HDMI and mini-USB cables.
For the kit's coding component, the team developed Kano OS, a distribution of Debian Linux, as well as Kano Blocks, a visual programming dynamic that allows users to develop with code blocks and then output the results in Javascript or Python for use in game programming or other areas. Circuiti in serie e in parallelo. Switched-mode power supply. Interior view of an ATX SMPS: below A: input EMI filtering; A: bridge rectifier; B: input filter capacitors; Between B and C: primary side heat sink; C: transformer; Between C and D: secondary side heat sink; D: output filter coil; E: output filter capacitors.
The coil and large yellow capacitor below E are additional input filtering components that are mounted directly on the power input connector and are not part of the main circuit board. The First-Timer's Guide to Building a Computer from Scratch. Western Digital Hard Drives, Network Drives, Media Players. USB. Overview[edit] In general, there are four basic kinds or sizes related to the USB connectors and types of established connections: the older "standard" size, in its USB 1.1/2.0 and USB 3.0 variants (for example, on USB flash drives)the "mini" size (primarily for the B connector end, such as on many cameras)the "micro" size, in its USB 1.1/2.0 and USB 3.0 variants (for example, on most modern cellphones)the versatile "USB On-The-Go" scheme, in both mini and micro sizes.
Life with Raspberry Pi: The hot $25 computer may just spark a coding revolution in schools. Illustration by Harry Campbell By Chad Sansing Our classroom glows with activity.
Gizmodo - Tech By Design. TechCrunch. Product reviews and prices, software downloads, and tech news - CNET. Lab3 - Laboratory for Experimental Computer Science. Watchdog and Sleep functions This example shows how to make use of the Watchdog and Sleep functions provided by the ATMEGA 168 chip .
These functions are useful if you want to build low power consuming devices operated by battery or solar power. The reduced power consumption is achieved by through a intermittent operation of the system .In case of Arduino your main loop will be executed once before the system is put into the sleep mode. After a few seconds t the watchdog wakes the system up and the main loop is executed again. The ratio between main loop execution time and watchdog time determines the amount of power that will be saved. When we assume that the time to measure a sensor and making some decisions will take 10 millisecond and the watchdog is set to 8 seconds the on/off ratio is 800 which extends the battery live time by this factor. Battery live time calculation Now we want to know long we can operate our device with standard alkaline AA Cells. Teensy USB Development Board.
The Teensy is a complete USB-based microcontroller development system, in a very small footprint, capable of implementing many types of projects.
All programming is done via the USB port. An ARM GNU/Linux box for $25. Take a byte! DIY Drones. Catalog.pdf. Drone driver licenses? How to make flying robots safe for American skies - NBC News.com. Drones Nidhi Subbaraman NBC News Oct. 13, 2013 at 4:51 AM ET Jonathan Sanger / NBC News. Instructables - Make, How To, and DIY.
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