Posted November 16, 2012 by Chris

“This project allows you to fabricate, with your own hands, a high quality stereo-zoom microscope, an instrument very useful for observing natural samples. As a bonus, it will serve to instill in young people, as well as adults, an interest in biology.”

Posted November 13, 2012 by Chris

“The device works by sweeping a grid of points and assembles the image piecewise. The output consists of two images: [1] an acoustic images which tells the distance to the objects in view and [2] a thermal image that gives the temperature of the objects in view. I use gnuplot to assemble the images.”

Posted October 30, 2012 by Chris

“Just about any physical signal or measurement in the world can be converted into a fluctuating voltage, an analog signal. Most laptops have a built-in microphone, so if you can convert your voltage into an audible signal, you can use the microphone to digitize it. Once it is in digital form, you can then process the signal with any programming language. Here we’ll use Mathematica.”

Posted October 23, 2012 by Chris

“This project describes an open software open hardware pH meter using an Arduino/Freeduino board. In other words, this is an electronic circuit to be connected with a glass electrode pH sensor.”

Posted October 6, 2012 by Chris

“Why a working, wearable air guitar? Bottom line, it’s just that cool. Who doesn’t want a machine that will take their jamming and turn it into rock they can hear? With just a glove, a pick and a little practice you can rock the synthetic acoustic guitar like no one else in the world.”

Posted October 3, 2012 by Chris

“In this tutorial, we will use the Arduino to read a flex sensor. The flex sensor is a device that changes its resistance proportional to its form, stretched or relaxed.”

Posted September 29, 2012 by Chris

“This device is no match for an Randy’s sensor, but it does (minimally) work. Think of this little project as a fun hack more than anything else. But with some tweaking and size reduction someone could probably implement an occasionally working altitude hold sensor for a fixed-wing RC aircraft.”

Posted September 24, 2012 by Chris

“Well, living together with a person comes with some responsibilities that are to be tackled. Like watering plants. My friend I’m sharing an apartment with was leaving for a couple of weeks and has burdened me with a task to take care of several pots with alien life forms.”

Posted September 19, 2012 by Chris

“With the relative complexity of today’s electronics, it’s not feasible to start from scratch; you need good building blocks to implement your vision. You’ll want to use commercial off- the-shelf components as much as possible and you most likely don’t want to be bound to a bulky PC…So how do we get started prototyping our ideas with the BlackBerry PlayBook tablet? For electronics concepts: enter Arduino.”

Posted August 28, 2012 by Chris

“Imagine this: you have your headphones on. When you turn your hand to the right there are the dark and low sounds. Turn your hand to the left and you hear bright shining bells. The other hand lets you shift the sound left or right as you like or just make more space as you turn forward. You can slowly turn from one side to the other, from dark to bright, from closed to wide, and the sound in your head follows your motion.”