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Arduino-Based Projects. Build your own homecontrol based the open source project Arduino.

Arduino-Based Projects

Use your PC, smartphone or tablet to regulate your radio outlet! You can use it at home via local network or even on the road via internet. Build this open source DIY wind turbine for $30. Getting started with home wind energy projects can set you back a pretty penny if you buy a finished product, but if you're a little bit handy and don't mind scrounging for materials and getting creative in the garage or backyard, you can try your hand at building one of these DIY wind turbines for about $30 in materials.

Build this open source DIY wind turbine for $30

After all, it is #iheartrenewables week! We've previously covered Daniel Connell's open source concentrated solar collector plans, but now he's back with another great DIY renewable energy project, a vertical axis wind turbine based on the Lenz2 lift+drag design. How To Sharpen Tools: The Family Handyman. Sharpening your tools Years ago, I drove by a storefront with a hand-painted plywood sign.

How To Sharpen Tools: The Family Handyman

It read “Tool Sharpening.” Curious, I gathered a boxful of dull old handsaws and circular saw blades in my garage and carried them up to the store with the hope of getting them sharpened. DIY Woodworking Tools. Pedal Powered Machines. Antique Farm Tools - Introduction (home-page)

3d prínting

Homemakable stuff. Surprising Material Could Play Role in Saving Energy. EVANSTON, Ill. --- One strategy for addressing the world’s energy crisis is to stop wasting so much energy when producing and using it, which can happen in coal-fired power plants or transportation.

Surprising Material Could Play Role in Saving Energy

Nearly two-thirds of energy input is lost as waste heat. Now Northwestern University scientists have discovered a surprising material that is the best in the world at converting waste heat to useful electricity. This outstanding property could be exploited in solid-state thermoelectric devices in a variety of industries, with potentially enormous energy savings. An interdisciplinary team led by inorganic chemist Mercouri G. Daniell Cell Tutorial. Daniell Cell This is a Java tutorial, which requires that you have Java, a free software, installed on your computer.

Daniell Cell Tutorial

It works best if you have the latest version of Java installed. If you are having trouble viewing or using this tutorial, try downloading the latest version of Java. In 1836, an English chemist named John Frederick Daniell came up with a twist on the simple electrical cell that resulted in a longer-lasting source of power. It is known as the Daniell cell. (6) Walther Grube. Farnell Newark Passive Components : CAPACITOR ELETROL ALUMIN 1F 5.5V.

Rugged Temp Sensor Made for Difficult Environments from Spectrum Control Inc. Spectrum Sensors and Controls introduces a ruggedized sensor for monitoring temperature in challenging applications, such as high moisture environments where the sensor is subject to continuous freeze/thaw cycles.

Rugged Temp Sensor Made for Difficult Environments from Spectrum Control Inc.

The sensor's thermistor element is isolated from not only outside moisture, but also the high stress of freezing and thawing through a unique, swaged end design that provides an excellent moisture seal between the cable and housing. This ruggedized temperature sensor delivers quick response and excellent thermal tracking and is ideal for HVAC, food and beverage and refrigeration system applications. Features. STULZ DH-100™ from Stulz Air Technology Systems, Inc. STULZ DH-100 units produce dry air to prevent corrosion, increase readiness, reduce maintenance, and improve Mean Time Between Failure (MTBF) for electronic systems.

With the STULZ DH-100 dehumidifiers, humidity can be controlled below levels at which moisture condenses on surfaces, thereby preventing corrosion, mold and mildew formation. The heart of the units are STULZ proprietary desiccant dehumidification wheel. A PTC electric resistance heater is used for regeneration and low speed-low noise compact blowers are used to move supply and regeneration air throughout the unit. Other elements include a small drive motor and belt to rotate the wheel, an integral humidistat, and a customized printed circuit board. Features: HACKOLOG - Amazing Hacks and Mods. For all those environment enthusiasts, we have an inexpensive device that you can set up in your house to verify the air quality at home.

HACKOLOG - Amazing Hacks and Mods

Read on to know more on this. This device can be used to know how clean and safe the air is inside your home This can be used to avoid getting affected by respiratory diseases like asthma. It will also help to precisely identify and correct any pollution sources at home. Connecting the dots - Anablog. Philips unveils poleless street lighting system. FreeStreet is a suspended street lighting system, that doesn't require streetlight poles Image Gallery (4 images) A group of people including city planners and architects recently put a challenge to Dutch electronics company Philips: design an outdoor lighting system that helps to declutter our streets.

Philips unveils poleless street lighting system

The result was FreeStreet, a street lighting system that does away with vertical streetlight poles in favor of horizontally-strung cables that have clusters of LED lights built into them. The system won its designers a 2011 Dutch Design Award, and is available for use in Europe as of this month. Non-glare nanotextured multifunctional glass repels water and dust. Glass has a unique look - despite its clarity you can tell there is a material there by the way it reflects light, and that it isn't plastic or crystal.

Non-glare nanotextured multifunctional glass repels water and dust

Glass, however, carries problems, like glare, fogging, and collects dirt. A group of MIT researchers has found a new way to create arrays of conical micron-scale surface nanotextures to produce glass that is self-cleaning, non-glare, and non-fogging. The researchers believe the nanotextured surface can be made at low enough cost to be applied to optical devices, the screens of smartphones and televisions, solar panels, car windshields and even windows in buildings. While many other approaches toward self-cleaning, non-glare and non-fogging glass surfaces have been tried, including surface hairs, mimicking lotus leaf surfaces, using non-fogging nanosilica polymers and electrically charged self-dusting surfaces, the MIT group is the first to find a single surface modification that boasts these combined properties.

10 incríveis máquinas Lego que realmente funcionam. RGB laser projector – 0,5W. Projector consists of three laser modules: red (650nm), green (532nm) and violet (405nm).

RGB laser projector – 0,5W

Light beam emitted by these lasers are combined by interference filters, also called dichroic mirrors or just “dichro”. The principle of those filters operation is similar to the principle of Fabry-Perot interferometer operation. The effect is that light of a given wavelength (or a band) is very well reflected, while others are very well passed (or vice versa). Those filters have to be very precisely aligned at right angles, so that the light beam can best overlap. For convenient adjustment of this type of optics, special handles are used. Solidoodle 2 – the sub-$500 3D printer. For about a year, former aerospace engineer Sam Cervantes served as the chief of operations for Makerbot, the Brooklyn-based 3D printer manufacturer.

While the reasons for his departure hasn’t been made public, his subsequent activities have – he’s been developing another 3D printer, known as the Solidoodle. He recently unveiled the latest model, the Solidoodle 2, which comes fully-assembled for just under $500. View all. Open Vision Control. FTC Sistemas FLIR - Termovisor I3 - Termômetro e Termovisores - Teste e Medição / Equipamentos FTC Sistemas. Real-Life Chemistry Vol 3 - Physics Vol 1.

Computer stuff

Electronics. Diy. Photography. Turbosail. Technical design[edit] Concept[edit] In 1980, Jacques Cousteau dreamed of creating a ship with a modern engine that would be powered, at least in part, by the wind, a clean, free, renewable energy source. The idea of using a hollow, rotating metal cylinder for propulsion, the Flettner rotor, had been tried and discarded decades before Cousteau and a team of engineers decided to revive and improve on it. Calypso II. Calypso II, " Watchdog of the Planet ", will be an observation platform where Captain Cousteau's spirit of environmental and human discovery will live on.

Fifty years of experience with Calypso and Alcyone enabled Captain Cousteau to define a list of specific tasks for Calypso II. The ship itself is conceived as a laboratory for non-polluting technology. Innovations include the shape of its hull as well as the combination diesel-Turbosail propulsion system, navigation equipment and computerized monitoring networks. Calypso II will be spacious enough to house scientific laboratories and exploration systems (observation chamber aft, helicopter, autonomous submersible, seaplane).