Posts by Ibrar Ayyub:
New studies explain insulator-to-metal transition of vanadium dioxide
Posted on: 11 Apr 2015
When heated to just above room temperature, the electrical conductivity of vanadium dioxide (VO2) abruptly increases by a factor of 10,000. Experiments coupled with high-performance computation reveal how the unusually large lattice vibrations, which are the oscillations of atoms about their equilibrium positions, stabilize this highly conductive metallic phase.
BalanceBot Using Atmega644
Posted on: 11 Apr 2015
Introduction The BalanceBot is a singular axis self balancing robot that is capable of adjusting itself to changes in weight and position. We developed the Balance Bot (BB or B2) from a single servo and a single accelerometer. This was very much a proof of concept to show the capabilities of the ATMega644 in doing […]
Multiple PID motor controller (with Wiimote!) using Atmega644
Posted on: 10 Apr 2015
Introduction The main idea for our project was to implement an inexpensive solution to the current CU Snake Arm motor-driving system by using a Mega644 microcontroller instead of multiple 3-Amp motor controllers as the snake arm was originally intended to be driven. Since we used DC motors, we implemented a PID control algorithm that determines […]
Electric Etch Using Atmega644
Posted on: 09 Apr 2015
Introduction The “Electric Etch” project takes the classic Etch-a-Sketch® toy and turns it into a non-volatile, continuous-line display capable of drawing the current time and text messages. On the classic Etch-a-Sketch, it is notably difficult to draw shapes by hand that involve elements any more complex than simple horizontal and vertical lines. That’s why we […]
Being more colorful found to be disadvantage for female plover
Posted on: 08 Apr 2015
(Phys.org)—A team of researchers working in Australia has found that bright coloring on female birds appears to be a reproductive disadvantage. In their paper published in Proceedings of the Royal Society B, the team describes how they tested predation of red-capped plover eggs and discovered that enhanced coloring by the parent tending the nest, made the eggs a more likely target, at least during the day.
Wireless Persistence of Vision Device with Realtime Control Using Atmega644
Posted on: 08 Apr 2015
Introduction We set out to make an easy to interact with, highly custimizable POV display. In deciding on a project we looked for a challenge that would have a good mix of hardware and software problems. We ended up primarily concentrating on looking at unusual display technologies and decided that a persistence of vision(POV) display […]
Programmable RGB Spinning LED Display Using Atmega32
Posted on: 07 Apr 2015
Introduction For our final project, we built a mechanism that spun a linear array of seven LEDs at a velocity that made it appear as if a message was being displayed using persistence of vision for the human eye. To accomplish this, we first had to design and build the hardware components, which may have […]
Best of Last Week—Black holes don’t erase information, a stick computer and the exploding head…
Posted on: 06 Apr 2015
(Phys.org)—It was another good week for physics as a team of researchers with the University of Waterloo found that a photon “afterglow” could transmit information without transmitting energy—though the receiver must expend energy to read that information. Also good news for physicists trying to solve the “information loss paradox”—a team of researchers has found a way to show that black holes don’t erase information—they claim that interactions between particles emitted by a black hole can be used to reveal information about material that “disappeared” inside of it
Alarm clock with speech synthesis Using Atmega32
Posted on: 06 Apr 2015
1. Introduction We designed an intelligent alarm clock which can be programmed from the computer to speak custom messages and also detect whether the user is on his bed or leaving his room. Sensors are pervasive in industrial, aerospace, and medical fields. Although they can potentially enhance the common person’s everyday-life, they are still seldom […]
Blackout game Using Atmega32
Posted on: 05 Apr 2015
1 Introduction Black Out is an electronic puzzle game that is a derivative of Lights Out released by Tiger Toys in 1995 but with a few additional twists. The game consists of a 4 by 4 grid of LEDs with each LED having a total of four states (off, red, blue and green). Sixteen […]
