Posts by Ibrar Ayyub:
Digital:Analog Clock – Arduino + PaperCraft
Posted on: 09 Mar 2014
In this instructable we will be recreating a clock inspired by Alvin Aronson’s original design. When I first saw this clock I was very impressed by how clean an elegant the design was I immediately wanted to recreate this effect. I hope some of you feel the same and use this as a guide to be […]
LT3763 – 60V High Current Step-Down LED Driver Controller
Posted on: 08 Mar 2014
Description The LT3763 is a fixed frequency, synchronous, step-down DC/DC controller designed to accurately regulate output currents up to 20A. The average current mode control- ler will maintain inductor current regulation over a wide output voltage range from 0V to 55V. Output current is set by analog voltages on the CTRL pins and an external […]
OLEDs Move Closer to Mainstream Lighting
Posted on: 07 Mar 2014
LEDs are a rapidly maturing technology that is making big inroads into the conventional lighting market. However, it is not the only new lighting technology in town. Organic LEDs (OLEDs) are now being considered as an option for some architectural lighting applications after gaining popularity as a display technology offering vibrant color without backlighting. OLEDs […]
Single-lead Heart Rate Monitor Analog Front End
Posted on: 06 Mar 2014
Analog Device’s AD8232 is an integrated signal conditioning block for ECG and other biopotential measurement applications. It is designed to extract, amplify, and filter small biopotential signals in the presence of noisy conditions, such as those created by motion or remote electrode placement. This design allows for an ultralow power analog-to-digital converter or an embedded […]
Look back at US soybeans shows genetic improvement behind increased yields
Posted on: 05 Mar 2014
Soybean improvement through plant breeding has been critical over the years for the success of the crop. In a new study that traces the genetic changes in varieties over the last 80 years of soybean breeding, researchers concluded that increases in yield gains and an increased rate of gains over the years are largely due to the continual release of greater-yielding cultivars by breeders.
Chandra and XMM-Newton provide direct measurement of distant black hole’s spin
Posted on: 05 Mar 2014
(Phys.org) —Astronomers have used NASA’s Chandra X-ray Observatory and the European Space Agency’s (ESA’s) XMM-Newton to show a supermassive black hole six billion light years from Earth is spinning extremely rapidly. This first direct measurement of the spin of such a distant black hole is an important advance for understanding how black holes grow over time.
Negative feedback in audio amplifiers
Posted on: 05 Mar 2014
I hate articles titled “Ten … myths debunked.” I would have to start by listing a round number of clumsily worded claims by the non-feedback camp who probably never said any such thing, and juxtapose some simplified school-book explanations to put them right. And after shooting, flaying and roasting alive my straw men and generally […]
VIA (Visual Impairment Aid)
Posted on: 04 Mar 2014
This project was my take on a DIY visual impairment aid that uses haptic and sound feedback. Basically it uses a distance sensor to measure how far objects are from it and then it beeps/vibrates accordingly (far away is slow vibrate/long beep delay and close up is fast vibrate/quick beeps). Real quick I’d like to […]
Lock it without a key
Posted on: 03 Mar 2014
Electromagnetic door locks can be very easily implemented to almost any entry or security system. We got used, that electromagnetic locks are a common part of entry doors to various buildings and offices. There are several types of such locks on a market, the most often they are a part of a doorframe. Each type […]
Optical nano-tweezers take over the control of nano-objects
Posted on: 02 Mar 2014
As science and technology go nano, scientists search for new tools to manipulate, observe and modify the “building blocks” of matter at the nanometer scale. With this in mind, the recent publication in Nature Nanotechnology in which ICFO researchers demonstrate for the first time the ability to use near-field optical tweezers to trap a nano-size object and manipulate it in the 3 dimensions of space, is an exciting achievement.
