UV Sanitizer: How to Build One and Measure Its Efficacy
Build a UV sanitizer from a UV LED panel and a small reflective enclosure.
Learn to Send and Receive Morse Code with the Morserino-32
Review of the Morserino-32 CW Trainer.
Basic Biological Signal Monitoring with a Translational Reality Twist
Use an inexpensive ear-clip heart rate sensor and an everyday Arduino to create a simple biological monitoring system.
Leaded Components: Reports of their death have been greatly exaggerated
If you’re just getting into electronics, don’t be dismayed — or distracted — by the world of SMT. A traditional perfboard, a good supply of leaded components, and a few schematics to work from will get you started.
My First Time Machine — Well, at Least My First Flux Capacitor
With a circuit simulator and a basic knowledge of components and circuit theory, it’s possible to simulate just about any electronic device that can be built.
Translational Reality Part 2: Control the World by Playing Pong
See how a classic video game can be adopted for use as a translational reality interface to enable the player to monitor and operate a remote device by simply playing the game.
The Art of Electronics: What Constitutes the Atomic Level?
When teaching electronics to others, how do you determine the atomic level?
A MAKER’S DOZEN: Designing Around Failure
I just finished a major production run of simulators for training physicians on how to examine the eye. Based on my failure rate, I'd say that a proper maker's dozen is 13.5 units. But, when it comes to DIY, it's not really a "failure rate" but a learning opportunity.
Indestructibles: The Lure of Tube Audio Equipment
My Sony integrated amp with copper chassis and huge toroidal transformers was a tour de force in my audio setup before the power mains took an indirect lightning hit. Because the microcontroller was fried, I couldn’t even get the unit to power up.
Developing Perspectives — When All You Have is a Hammer
Sometimes expertise in one area unnecessarily narrows the range of options to be considered when assessing a problem.
The microMedic Kit
This is a review of the microMedic Contest Kit, designed to support the 2013 microMedic National Contest sponsored by the US Army's Telemedicine and Advanced Technology Research Center in collaboration with Carnegie Mellon Entertainment Technology Center and Parallax, Inc.
While clean power is frequently equated with green power, it can also refer to AC power free from spikes, dips, surges, audio, and RF noise., I recently learned the hard way that one of the precautions commonly taken to assure uninterrupted, clean power can take down your computer and potentially devastate your entire workshop.
As highlighted by several articles in this issue, green innovation — using energy efficient alternatives to fossil fuel and other methods of minimizing the release of carbon in the environment — has bubbled to the surface of our social consciousness. Increased gasoline prices at the pump, US military involvement in the Middle East, and maneuvering of political parties in preparation for the upcoming presidential election, have reinvigorated the green energy product and service industry..