CircuitLab | sketch, simulate, and share your circuits USB / DC / Solar Lithium Ion/Polymer charger [v1.0] ID: 390 - $24.95 NOTE: This product is only designed for use with solar panels sold at the Adafruit store. We cannot guarantee this will work with solar panels purchased elsewhere. Please purchase this kit and panels from Adafruit to ensure optimized functionality! Make your projects to go green this summer with our specialized USB/Solar Lithium Ion Polymer Battery charger! This charger is a very unique design, perfect for outdoor projects, or DIY iPod chargers. We've spent over a year testing and tinkering with this charger to come up with a plug and play solution to charging batteries with the sun and we're really pleased with what we ended up with. Easy to use! Our carefully designed charger is designed specifically for solar charging, and will automatically draw the most current possible from the panel in any light condition! Please note! For use with Adafruit Lipoly/LiIon batteries only! 3.7V/4.2V Lithium Ion or Lithium Polymer battery charger Charge with 5-6V DC, USB or 6V solar panel!
SparkFun Electronics R-Pi Hub Notice: The Raspberry Pi Wiki pages on this site is collaborative work - the Raspberry Pi Foundation is not responsible for content on these pages. Now shipping to customers See the Buying Guide on how to order one, or visit the Raspberry Pi Foundation Home Page About The Raspberry Pi production board (model B Rev 2.0) 3D CAD Model of the Raspberry Pi 3 Model B (Download) The Raspberry Pi (short: RPi or RasPi) is an ultra-low-cost ($20-$35) credit-card sized Linux computer which was conceived with the primary goal of teaching computer programming to children. Raspberry Pi is manufactured and sold in partnership with the worldwide industrial distributors Premier Farnell/Element 14 and RS Components, and the Chinese distributor Egoman Technology Corp. Products are RoHS, CE, FCC, CTick, CSA and WEEE compliant. History If you are interested in why the Raspberry Pi was created, and why it is what it is, check the General History page, which highlights relevant events in its history. Resources
Making PCBs How to make really really good homemade PCBs Note - this article is original material. There is currently a plagiarised copy of it on the site of an Indian electronics magazine credited to a rip-off artist called Indrani Bose. This page is a guide to producing consistently high quality PCBs quickly and efficiently, particularly for professional prototyping of production boards. With the methods described, you can produce repeatably good single and double-sided PCBs for through-hole and surface mount designs with track densities of 40-50 tracks per inch and 0.5mm SMD pitches. This information has been condensed from over 20 years' experience of making PCBs, mostly as prototypes of boards to be put into production. I will only consider photographic methods in depth - other methods such as transfers, plotting on copper and the various 'iron-on' toner transfer systems are not really suited for fast, repeatable use. Artwork generation Media Output devices Photoresist PCB laminates Exposure Etching
Hijack Introduction HiJack is a hardware/software platform for creating cubic-inch sensor peripherals for the mobile phone. HiJack devices harvest power and use bandwidth from the mobile phone's headset interface. The HiJack platform enables a new class of small and cheap phone-centric sensor peripherals that support plug-and-play operation. Model: TES52959P hijack project The Hijack kit includes: Hijack mainboard Hijack programmer HiJack ProtoBoard Grove-Universal 4 Pin cable X5 Bug Tracker Because of the connector we used in last batch can not be found in market, we have transferred to the original hijack version, which we found a fatal bug in the connector. How does Hijack works Power. Download the firmware The Hijack is shipped with a firmware downloaded into it's MCU. 1. 3. If you see the "xxxx bytes programmed" message, the firmware download is OK. Schematic Hijack mainboard.PDFProgrammer.PDFProtoBoard.PDF Cautions Specification May include key specifications and other specifications. Application
MacSpice 3f5 - Circuit Simulator for Mac OS X Quasar Electronic Kit Module Project UK: Industrial Educational Hobby Punnet - a print at home cardboard case Ok, I hope I'm replying to the right people with the right replies... Nb8k & kieranajp - Thanks and noted. paddy2k - Nice idea - I like the Selotpe thought. Steep - I did toy with that idea, but thought it might be a bit hard to cut out. johncoles - Mod away! natstott - Thanks, and yes once the measurements are nailed down for the standard PDF version I'll release it as a SVG as well for easier modding. surpher - Thanks for the useful paintover. captainwebb - I personally prefer the outside plain, but as quite a few people have made similar requests I will put the labels on the outside on the next version. Thanks to Andrew K who has put up a PDF based on Punnet, using measurements from a real Pi, I can now use that to make any adjustments. I've just had a book arrive from Amazon, and the standard cardboard packet they use looks just the right sort of size and thickness for perhaps making a tough version of the Punnet.
Corporation - Microcontrollers, 32-bit, and touch solutions Graphene supercapacitors are 20 times as powerful, can be made with a DVD burner A team of international researchers have created graphene supercapacitors using a LightScribe DVD burner. These capacitors are both highly flexible (pictured below) and have energy and power densities far beyond existing electrochemical capacitors, possibly within reach of conventional lithium-ion and nickel metal hydride batteries. The team, which was led by Richard Kaner of UCLA, started by smearing graphite oxide — a cheap and very easily produced material — films on blank DVDs. These discs are then placed in a LightScribe drive (a consumer-oriented piece of gear that costs less than $50), where a 780nm infrared laser reduces the graphite oxide to pure graphene. The laser-scribed graphene (LSG) is peeled off and placed on a flexible substrate, and then cut into slices to become the electrodes. These graphene supercapacitors could really change the technology landscape. Read more at Science (paywalled) [Image credit]
The World Famous Index of Arduino & Freeduino Knowledge N R Bardwell Ltd - Raspberry Pi Raspberry Pi 7” Touchscreen Display The Touchscreen Display gives users the ability to create all-in-one, integrated projects such as tablets, infotainment systems and embedded projects. Buy Now Learn More