What You Need To Know About EMI Antennas

Any electronic device, system or subsystem generates EMI or ElectroMagnetic Interference and is susceptible to EMI generated by others. To allow them to coexist and cooperate, all such electronic devices, systems or subsystems must confirm to specific standards, which limit the amplitude and frequency range of EMI generated and tolerated by each of them. Testing for such radiated emissions and immunity involves EMI chambers and OATS or Open Area Test Sites. To check for EMI generated, these chambers Read more [...]

What is Digital Signal Processing?

Initially, when DSP or Digital Signal Processing was introduced over thirty years ago, it involved standalone processing. A single micro-controller handled all the parameters for processing the analog signal and transforming it to its digital value. Evolution in this area has introduced multicore processing elements that now extend the DSP's range of applications. Simultaneously, evolvement of software development tools for the DSP now allows expansion for accommodating diverse programmers. Therefore, Read more [...]

Predict Solar Eclipses with Wolfram on Raspberry Pi

Wolfram Research shows how the Wolfram language, used on a Raspberry Pi or RBPi, can help visualize solar eclipses. With this combination, you can view past and present solar eclipses. The most astounding aspect is the solar eclipses you visualize can be not only total or partial, but also as if seen from Earth, Mars or Jupiter. Depending on your present geographical location, you may or may not be able to witness a solar eclipse. To recapitulate, solar eclipses are events where the Moon blots Read more [...]

Phosphorene Challenges Graphene as a Semiconductor

Though silicon has been the basis of semi-conductors for decades, it is facing stiff competition from other materials that promise to deliver several extras to consumers who like to enjoy more flexibility with their gadgets. For some time, graphene, a one atom thick allotrope of carbon has been under consideration for use in electronic devices because its thin structure allows electrons to travel across it much more rapidly than they would do across silicon. However, graphene has severe limitations, Read more [...]

Let Raspberry Pi Track Bats for You

If you live in an area that has fruit trees around, it is likely bats share your space. Bats are furry mammals that flit about at night, feasting on insects and fruits. Although they are not gifted with good eyesight, they locate prey and avoid obstacles using echolocation. They are expert fliers and it is difficult to observe them since they are so silent. Although humans cannot hear bats, it does not mean these creatures make no noise. In fact, using the process of echolocation, bats produce Read more [...]

How Gesture Sensors are Revolutionizing User Interface

Imagine a scenario where you control almost everything by simply waving your arms and not by punch any buttons or touching a screen. Welcome to the complicated world of gesture controls. Mechanical buttons and switches are subject to the risk of reliability – they also need protection from the environment. When replaced with electrical controls, such as resistive or capacitive displays and buttons, these do bypass the problems faced by mechanical switches. However, to operate, they still need the Read more [...]

Wing Waves Can Generate Electricity

Scientists around the world are working to perfect technology for generating cost effective electricity from oceans and seas using wings waves. Stephen Wood, an assistant professor of marine and environment systems at the College of Engineering of Florida Institute of Technology is building up on the expertise available to exploit it in a more efficient way. A set of wing waves, also called sea fans comprise two metal structures shaped like wings. The fans are installed on the floor of the sea. Read more [...]

What Can the Raspberry Pi Do After Dark?

A lot more goes on in the museums of the world at night, after everyone has vacated the premises and the guards have locked up the place, than one can imagine. The situation may not be as dramatic as what Ben Stiller shows us in the movie, "Night at the Museum," but still, it does warrant a serious investigation. This is what Tate Britain has done with its After Dark project with help from the inaugural IK Prize. Tate Britain has one of the largest art collections in the world. In August 2014, Read more [...]

Synthetic Diamond Manages Power

Power delivery using semiconductor devices is increasing at a rapid pace. This is evident from different forms of power delivered, whether it is controlled power through power inverters, or RF power through amplifiers. Power is necessary to operate nearly everything, such as for alternative forms of energy generation, electric vehicles, radar systems, cellular base stations and even smartphones. However, semiconductor devices need to dissipate the heat they generate, and this poses a stringent challenge Read more [...]

Raspberry Pi Helps Marine Ecology with Autonomous Recordings

The health of marine ecosystems is linked to that of all living beings on Earth. Around the world, people are waking up to this truth and making efforts to find out what goes on in the murky depths of the oceans. One of the foremost indicators of the health of oceans is determining the population size of Cetacean species, which includes porpoises, dolphins and whales. However, that is easily said than done. Over the centuries, man has recklessly hunted these gentle giants to the point of almost Read more [...]