3D Printers: Change the Shape of Your 3D-Printed Objects

When you print 3D objects on your 3D printers, they remain stable. Other than deteriorating over time, the objects do not change by themselves. However, that may be changing now. Scientists at MIT have created a new technique of printing 3-D objects where you can change the polymers in the object after printing. That means change the color of the object, grow or shrink it, or even change its shape entirely. Associate Professor of Chemistry at MIT, Jeremiah Johnson led the research, along with Read more [...]

IOT: The Internet of Things Helps Manage Decisions

In any era, one of the characteristics of a good leader has always been their ability to take a good decision with the limited information available to them. According to the 26th US President Theodore Roosevelt, the best thing to do in a moment of decision is doing the right thing, the next best thing is doing the wrong thing, while the worst that anyone can do is doing nothing. This brings us to the IOT Expectations are the Internet of Things (IoT) will be networking billions upon billions of Read more [...]

How Do Air and Magnetic Hydraulic Circuit Breakers work?

Circuit breakers have replaced fuses in most electric circuits. As these are easy to select, install, and maintain, circuit breakers are more commonly employed as protection against over-current and shorts. For different applications, there are various types of circuit breakers available in the market. We will discuss two of them. Air Circuit Breakers Air circuit breakers use air as the medium for extinguishing the arc formed when the breaker trips. The air is usually kept in compressed form Read more [...]

Bipedal Robots Walk Agilely on Two Legs

At the New Economic Summit (NEST) 2016 conference, in Tokyo, Japan, Andy Rubin unveiled an awesome new bipedal robot from SCHAFT. The new robot can easily climb stairs, carry a payload weighing 60 kilos, balance on a pipe, and move in tight spaces. In fact, they even showed a video where the robot can be seen climbing a narrow staircase. By positioning its legs behind its body, the robot is shown cleaning the stairs using a spinning brush and a vacuum type appendage attached to its feet. The video Read more [...]

The Raspberry Pi MeARM

Arms are a favorite with robotic enthusiasts. The number of joints in an arm ensures this. For instance, an arm can be made to rotate a full circle, and bend to almost at right angles. Each finger on an arm can be manipulated independently, and each finger can have at least three joints. Therefore, an arm with even two fingers and an opposing thumb can pick up objects—with pressure sensing. A simple project such as an arm can become as complicated as one can make it. The above reasons made the Read more [...]

How Long Does it take for a Circuit Breaker to Operate?

Electrical power systems all over the world use circuit breakers as important and critical components. As they play a key role, engineers periodically test circuit breakers. One of the most important test methods is the timing test, which measures the mechanical operating time of the breaker’s contacts. A timing test averts damage to a circuit breaker, as the incorrect operation of a circuit breaker prevents fatal consequences on connected equipment and substation personnel. Various measuring Read more [...]

Researchers Develop Thermoelectric Organic Transistors

Linkoping University scientists have made possible an organic transistor that is driven by temperature changes instead of by an electrical signal. Made of a thermoelectric material, the transistor brings about an appreciable current modulation for just a single degree rise or fall in temperature. Professor Xavier Crispin, based at the Laboratory of Organic Electronics of the university, states that heat driven transistor is the first logic circuit to be developed that makes use of thermoelectricity. Wide Read more [...]

How to Host XBee Sensors with the Raspberry Pi

Hosting sensors on the Raspberry Pi (RBPi) is so simple because the GPIO pins are all available. As most sensors need very little supporting components, hosting multiple sensors on your RBPi is possible. For instance, RBPi can simultaneously host multiple sensors for temperature, pressure, humidity, and other parameters for sampling atmospheric conditions from a weather station. However, the RBPi does not support digitals signals on its GPIO pins. This is one reason the RBPi is so inexpensive. Read more [...]

Metamaterial Cools Buildings without Using Energy

Engineers at the University of Colorado Boulder have built a metamaterial that can be used to cool structures without drawing on any energy. The material can also cool objects placed in direct sunlight without using water. A metamaterial is an artificial substance with remarkable properties not possessed by natural substances. According to Xiabo Yin, an assistant professor at Colorado Boulder and a director of the research, the new metamaterial could be a game changer in the field of radiative Read more [...]

Name Badge with the Raspberry Pi

For people who interact a lot with others, it helps to build relationships if there is a small gizmo available as a handout. Apart from being a conversation starter, this could also be an advertiser for that upcoming project or story. Most people relish being handed a freebie, and a programmable one-off gadget is one of the best. These were the exact thoughts running through Rob Reilly’s mind when he got a tiny color LCD for Christmas. He conceived the idea of a programmable name badge, as that Read more [...]