About: Ibrar Ayyub

Abstract: A PIN photodiode, four low-noise op amps and a comparator are used to detect individual photons of gamma radiation. The schematic, design considerations and component selection are discussed. The circuit of Figure 1 includes a PIN photodiode that detects individual photons of gamma radiation. When a photon strikes a depletion region created by reverse bias […]

Introduction In this project, 16 LEDs are used to represent the time in binary. The time is read from a Real Time Clock breakout board – the same one used in the Digital Clock page. The binary clock uses 4 place values for the hour (12hr format), 6 place values for the minutes, and 6 […]

Professionals, school laboratories and amateurs can now gain this new, extra affordable digital MSO oscilloscope in a limited offer.   Probably you may have noticed, that company Hameg became a member of Rohde&Schwarz group and new oscilloscopes already carry only an R&S logo. However the name of series HMO remains, which represents for several years […]

This robot head was originally built as a end of the year project for my physical computing class, but over the summer it has “learned” how to talk. The head is powered by two Freeduinos, 3 TLC5940NT chips and an Adafruit Industries Wave Shield found here: www.ladyada.net/make/waveshield/. The head is currently connected to a computer by two […]

Who is the winner of umodule demoboard from Linear technology? In addition to getting to know the winner, you can also watch the video record from webinar… Linear Technology’s family of DC/DC Module products simplifies your analog design. By integrating the DC/DC controller, power switches, magnetic, and a modest amount of capacitance, uModules power products […]

There are other Instructables about building LED cubes, this one is different for several reasons: 1. It’s built with a low number of off-the-shelf components and hooks up directly to the Arduino. 2. A clear, easy to reproduce circuit diagram is provided with plenty of photos. 3. A unique approach is used for the software […]

Colin Johnson @ nextgenlog.blogspot.com: Hybrid solar cells that harvest all of the suns energy, instead of just a few narrow bands, could transform the energy economies worldwide: R. Colin Johnson @EETimes For more detail: Hybrid Solar Cells Promise 95% Efficiency

This Instructable is all about one of life’s simple actions, flipping a light switch on and off. At oomlout we do it many times a day, so many in fact it came to a point where we asked ourselves “Can’t we get an Arduino to do this?”. Of course we can, what follows is how […]

So I mentioned in an earlier Instructable that I am a teaching assistant (TA) for an introductory engineering course for biomedical engineering majors at Vanderbilt University. My main task as a TA is to re-write a few laboratory exercises that the students will be performed during the class. One of the laboratory exercises was to […]

First ever affordable 5axis multi-fabricator that brings most advanced fabrication right to your desk: We’ve designed machine that combines multi- fabrication methods: 5axis milling being one of them. 5AXISMAKER is a machine versatile enough to fabricate most advanced design prototypes in readily available material while on your desktop right next to you. Being an alumni […]