Wii Nunchuk Controller for ATHLETE Operations

NASA’s Jet Propulsion Laboratory, Pasadena, California The Arduino platform was used to develop an interface between two otherwise incompatible commercial devices in order to drive the ATHLETE (All-Terrain Hex-Limbed Extra-Terrestrial Explorer) rover over long distances. The Portable Operations Terminal consists of three distinct parts: a robot-mounted ruggedized laptop computer containing all of the “ground” support software needed to operate ATHLETE, a handheld computer capable of performing simple problem diagnosis and troubleshooting, and a handheld joystick based on the Wii Nunchuk used to drive ATHLETE with one hand. The physical modifications included an Arduino electronic prototyping board with custom firmware, and various support cables, lanyards, and enclosures to make the device survive the desert environment of the field test.

Posted in: Electronics & Computers, Briefs, TSP


'Sensing Skin' Detects Damage in Concrete Structures

Researchers from North Carolina State University and the University of Eastern Finland have developed new “sensing skin” technology designed to serve as an early warning system for concrete structures, allowing authorities to respond quickly to damage in everything from nuclear facilities to bridges.“The sensing skin could be used for a wide range of structures, but the impetus for the work was to help ensure the integrity of critical infrastructure such as nuclear waste storage facilities,” says Dr. Mohammad Pour-Ghaz, an assistant professor of civil, construction and environmental engineering at NC State and co-author of a paper describing the work.The skin is an electrically conductive coat of paint that can be applied to new or existing structures. The paint can incorporate any number of conductive materials, such as copper, making it relatively inexpensive.Electrodes are applied around the perimeter of a structure. The sensing skin is then painted onto the structure, over the electrodes. A computer program then runs a small current between two of the electrodes at a time, cycling through a number of possible electrode combinations.Every time the current runs between two electrodes, a computer monitors and records the electrical potential at all of the electrodes on the structure. This data is then used to calculate the sensing skin’s spatially distributed electrical conductivity. If the skin’s conductivity decreases, that means the structure has cracked or been otherwise damaged.The researchers have developed a suite of algorithms that allow them to both register damage and to determine where the damage has taken place.SourceAlso: Learn about Designing Composite Repairs and Retrofits for Infrastructure.

Posted in: News, Electronic Components, Electronics, Detectors, Sensors


Researchers Develop Flexible, Energy-Efficient Hybrid Circuit

Researchers from the USC Viterbi School of Engineering have developed a flexible, energy-efficient hybrid circuit combining carbon nanotube thin film transistors with other thin film transistors. The hybrid could take the place of silicon as the traditional transistor material used in electronic chips, since carbon nanotubes are more transparent, flexible, and can be processed at a lower cost.The hybridization of carbon nanotube thin films and IGZO (indium, gallium and zinc oxide) thin films was achieved by combining their types, p-type and n-type, respectively, to create circuits that can operate complimentarily, reducing power loss and increasing efficiency. The inclusion of IGZO thin film transistors provided power efficiency to increase battery life. The potential applications for the integrated circuitry are numerous, including Organic Light Emitting Diodes (OLEDs), digital circuits, radio frequency identification (RFID) tags, sensors, wearable electronics, and flash memory devices. Even heads-up displays on vehicle dashboards could soon be a reality.The new technology also has major medical implications. Currently, memory used in computers and phones is made with silicon substrates, the surface on which memory chips are built. To obtain medical information from a patient such as heart rate or brainwave data, stiff electrode objects are placed on several fixed locations on the patient’s body. With the new hybridized circuit, however, electrodes could be placed all over the patient’s body with just a single large but flexible object.SourceAlso: Learn about an Integral Battery Power Limiting Circuit for Intrinsically Safe Applications.

Posted in: News, Board-Level Electronics, Electronic Components, OLEDs, Patient Monitoring, Sensors


About MicroTCA.4: An High-Performance Architecture with I/O and Signal Conditioning Provisions

MicroTCA is a powerful, compact open-standard COTS architecture used in Military, Aerospace, Communications/ Networking, and other industries. By adding rear I/O capability and signal conditioning provisions in the MicroTCA.4 specification, the technology became ideally suited for the High Energy Physics market. This paper will review the MicroTCA.4 background, hardware ecosystem, and latest design advancements.

Posted in: White Papers


Thin Films Self-Assemble in One Minute

Researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) have devised a technique whereby self-assembling nanoparticle arrays can form a highly ordered thin film over macroscopic distances in one minute.

Posted in: News, Electronic Components, Coatings & Adhesives, Composites, Optics, Photonics


New Supercapacitor Could Make Structural Energy Storage A Reality

Imagine a future in which our electrical gadgets are no longer limited by plugs and external power sources. This intriguing prospect is one of the reasons for the current interest in building the capacity to store electrical energy directly into a wide range of products, such as a laptop whose casing serves as its battery, or an electric car powered by energy stored in its chassis, or a home where the dry wall and siding store the electricity that runs the lights and appliances. It also makes the small, dull grey wafers that graduate student Andrew Westover and Assistant Professor of Mechanical Engineering Cary Pint have made in Vanderbilt's Nanomaterials and Energy Devices Laboratory far more important than their nondescript appearance suggests.

Posted in: News, Electronic Components, Power Management, Energy Storage


New Way To Make Sheets Of Graphene Discovered

Graphene's promise as a material for new kinds of electronic devices, among other uses, has led researchers around the world to study the material in search of new applications. But one of the biggest limitations to wider use of the strong, lightweight, highly conductive material has been the hurdle of fabrication on an industrial scale.

Posted in: News, Electronic Components, Solar Power, Coatings & Adhesives