Fresh hacks every day
After seeing some heart rate monitor apps for Android which use the camera and flashlight features of the phones, [Tyson] took on the challenge of coding this for himself. But he’s not using a smart phone, instead he grabbed a headlamp and webcam for his heat rate monitor.
To start out he recorded a test video with his smart … Read the rest
[Sulaiman Habsi] and two classmates put together a Morse Code interpreter as a class project at Sultan Qaboos University. The system listens to a morse code signal using a microphone, then translates that input to text which is displayed on this character LCD.
The breadboarded circuit feeds an audio signal from the microphone, through an OpAmp, to the ADC of … Read the rest
It’s somewhat amazing how these rather inexpensive electronics can augment the functionality of a common stethoscope. This digital stethoscope is using audio processing to add the features. A standard chest piece feeds a condenser microphone which is fed through a pretty standard OpAmp circuit which supplies the ADC of an ATmega644. After being digitized, the heart sound can be … Read the rest
[Jinha Lee] at the MIT Media Lab created a new interface allowing new ways to modify and play with 3D objects. It’s called ZeroN, and it’s nothing short of a futuristic device straight out of Star Trek.
ZeroN is simply a platform for levitating a small spherical permanent magnet in 3D space. It does this by mounting a hall … Read the rest
[Roy] is getting to the end of his second CNC mill project and finally seeing some results. Here you can see a bear he milled in some floural foam.
The project started out as an Arduino-based pen plotter. It move the pen along one axis, and the drawing surface along another, with the third axis allowing the pen to be … Read the rest
[Dave Borghuis] put together a quick video tour of the TkkrLab hackerspace in the Netherlands.
The tour stats off with the entry system. We looked in on this project at the end of last year. The space totals about 150 square meters (about 1600 square feet) divided into three rooms. There’s a ‘dirt’ room which houses some tools for woodworking … Read the rest
[Marchelo] wanted to build his own chicken coop. He started researching different designs and ended up basing his build on the golden spiral.
In addition to the interesting shape, a ton of clever design choice made it into the build. For instance, [Marchello] took the time to dramatically round over the lumber used as the skids of the base. … Read the rest
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