terça-feira, 7 de Maio de 2013

Brinquedos didácticos, CNC para sonhar, o Brasil na frente (fria), Super-Condensadores, e Rodas de Bicicleta

A Mindsets oferece-vos uma série de mais de 20 Brinquedos Didácticos, sob o tema da Energia Solar, e com um Manual de 60 páginas, não há-que falhar:

Solar Mechanics

Build more than 20 solar-powered models to learn about how solar cells convert energy from sunlight into mechanical energy. Conduct experiments with the solar cell to see how different placement angles, different light levels, different sources of light, and different loads affect its operation. Learn about solar power in a fun, hands-on way.

This kit includes a unique single-piece solar motor that is composed of a photovoltaic cell and an electric motor joined together in one compact unit. With this solar motor, you can power dozens of electric vehicles and devices. Build models including cars, trucks, planes, windmills, waterwheels, robots, and other vehicles.

The 60-page, full-color experiment manual offers step-by-step illustrated instructions for the building projects and experiments.

Um dia, isto há-de ser acessível... Mas não agora!
Mas como sonhar não custa nada, e isto pode inspirar uns Engenhocas que eu cá sei, a fazer uma versão Desktop, cá vai o artigo sobre estas pequenas maravilhas, Fresas CNC de 5 eixos!

5-Axis machining for Mold and Die

More companies are investing in 5-axis technology for milling mold & die components. Part of this is certainly because of the growing numbers of different models of 5-axis machining centers becoming available in the marketplace. As with many other advanced technologies, new entries into the market place have brought innovation providing high functionality for lower costs. One such example is from the camera phone video below. This was from the IMTS 2012 exhibit trade show, and shows a Hurco iSeries mill performing smooth 5-axis movements on a part that had truly a mirror finish.

Brasil na frente, desta vez, Frente Fria, eis uma visão da futura Base Antártica Brasileira, espectáculo...
Para provar que a tragédia que vitimou 2 Valentes lá no Pólo Sul, Deus os tenha, não os desmotivou de continuar a fazer pelo Futuro...
Eis a futura Estação Antártica Comandante Ferraz:

Winning design chosen for Brazil's new Antarctic base

Antonio Pasolini

In February 2012 the Brazilian research base in Antarctica was almost entirely destroyed by a fire caused by an overflowing of the fuel tanks that fed the generator. Two people died and the operation suffered a financial loss of R$25m (US$12.4million). Fast forward to 2013 and the future looks much brighter for Estação Antártica Comandante Ferraz, as the station is officially called.
The winning proposal for the new Ferraz Antarctic station was announced by the Brazilian navy at a recent event in Rio de Janeiro. The commission for the R$105m ($52.3 million) complex went to Estúdio 41, a Curitiba-based design practice, which won R$100,000 (US$49,700) as part of the competition.
“The project is in the preliminary study stage and the complete executive version is due to be completed at the end of the year,” Estúdio 41 architect Eron Costin told Gizmag. It is hoped the new station will be ready to operate by March 2015.

Para a Energia nas vossas Engenhocas, cortesia da DesignSpark, considerem este Artigo sobre o uso de Super-Condensadores:

Benefits of Supercapacitors in Industrial Handheld Devices (Cap-XX)


We've often been asked to explain about using supercapacitors in battery operated equipment and so decided to present this article written by Jean Pierre Mars, VP Applications Engineering, CAP-XX (Australia) Pty Ltd.
Portable electronic devices for commercial applications must meet more stringent performance requirements and specifications than their consumer counterparts, and may have many power hungry features which need to operate simultaneously. A supercapacitor offers several key benefits when incorporated into the power architecture of an industrial handheld device.
Pulse power support: The supercapacitor provides the peak current required by all high power loads in the device, including GSM/GPRS and RFID communications, thermal printers, LED flash, bar code scanners, GPS chips, display refreshes, hard disk drives and audio amplifiers. This reduces stress on the battery, minimizing voltage droop, improving run-time (transactions per charge) and extending battery life.


E para construírem e / ou repararem as vossas Bicicletas, eis uma Base para alinharem as Rodas, algo que fará muito jeito a muita gente, ainda mais, quando é desmontável, e podem-na levar para os vossos Passeios e Provas de Ciclismo:

 Bicycle wheel truing stand

This is a simple truing stand for bicycle wheels. It's no-frills so it might not appeal to professional bike mechanics but it's perfect for recreational bikers who might only build a few wheels a year. It's made from just a few pieces of steel so it's cheap, and it breaks down nicely for storage.

I made it at TechShop.

To create this wheel truing stand you’ll need the following raw materials:
- 36 in. x 2 in. x 1/8 in. steel angle
- 36 in. x 1 in. x 1/8 in. steel angle

Steel angle (aka angle iron) is just a length of steel that is bent at a 90 degree angle along its long axis, forming an L in cross-section. It’s pretty cheap and you can get the two pieces you need from your big-box hardware depot for about $20.

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