About: Ibrar Ayyub

In colleges and universities across the country, undergraduate students in the social sciences are using an online educational tool that goes beyond the traditional presentation of demographic data as numbers and tables. Social Explorer provides students with robust data visualization capabilities, allowing students to “see” and “play with” their data by generating maps.

The MAX31820 ambient temperature sensor provides 9-bit to 12-bit Celsius temperature measurements with ±0.5°C accuracy over a +10°C to +45°C temperature range. Over its entire -55°C to +125°C operating range, the device has ±2.0°C accuracy. The device communicates over a 1-Wire® bus that, by definition, requires only one data line (and ground) for communication with […]

Cap’n ArrDrownHo! is the lovechild of Ardweeny and Boarduino and he’s here to commandeer your AVR ships. ArrDrownHo! inherits pros of both and cons of neither. Pick up an AVR chip and start prototyping instantly on a breadboard! Want to replace that costly Arduino in your project with a cheap AVR, but don’t know how? Use […]

For some Arduino projects, you don’t actually need that many IO pins. That’s exactly the case when I tried to build a simple RGB throwie that would cycle through colours. I was looking for a cheaper alternative to the Arduino UNO’s ATmega328P when I stumbled across this post by MIT’s High-Low Tech lab. They developed a […]

It may be hard to believe, but that transparent disk in the photo above is actually a fully functioning speaker. A team of researchers at Harvard’s School of Engineering and Applied Sciences have pioneered a never before seen application of ionic conductivity by creating a see-through artificial muscle that can produce sounds spanning the entire […]

This is a flyback SMPS that will boost voltage a voltage of around 20V to 40V, or more if you change the feedback resistors.  It uses an off the shelf transformer from CoilCraft. The LM3479 is a nice controller because it’s frequency of operation can be set by changing R1.  At 39K it runs at […]

I found simple and cheap  ”Latching Momentary Switch” circuitWhen the circuit is powered up, all of the transistors are off and stay off. C1 gets pulled up to Vp.  When the switch is pushed, Q3 and Q2 turn on, since their base is pulled up. Q1 and Q4 are in turned on as well. Q1 […]

MegunoLink Pro is a tool designed to aid embedded electronics designers. From hobbiests using the Arduino platform to commercial engineers using PIC or TI micros. MegunoLink provides a set of tools to help visualize serial data and investigate what is going on inside that piece of silicon. MegunoLink is made up of a set of […]

Catching up the development of printed circuit boards at home i often faced with the problem of “the bulbous” vias. Usually homemade double-layer boards soldering from both sides with the thin wire, the result usually satisfied but if you need to make VIA under the chip TQFP48, SOIC16 and that’s is a real problem, if […]

The climate is warming in the arctic at twice the rate of the rest of the globe creating a longer growing season and increased plant growth, which captures atmospheric carbon, and thawing permafrost, which releases carbon into the atmosphere. Woods Hole Research Center (WHRC) Assistant Scientist Sue Natali and colleagues engineered first-of-a-kind warming experiments in the field to determine net gains or losses in carbon emissions.