26 Aug '16, 9pm

Why You Should Care About Oscilloscope Trigger System Basics: This article pulls back...

The sole responsibility of the trigger system is to tell the rest of the oscilloscope what data to care about. It decides when the acquisition system begins acquiring, which means that by default it decides what’s displayed on screen and what data is available to make measurements on. It can make these decisions with a very simple set of conditions or very complex conditions, based on user input. Let’s consider the example in Figure 1, a 10-MHz square wave. The reason the signal in the image looks so clear and well-positioned on-screen is that the trigger is set up, appropriately, to look for a rising edge on Channel 1, as seen in the trigger configuration dialog in

Full article: http://electronicdesign.com/test-measurement/why-you-shou...

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DIY Emergency Button: Hack a Nike+iPod Sport Kit to Create an Elder Alert System

DIY Emergency Button: Hack a Nike+iPod Sport Ki...

spectrum.ieee.org 26 Aug '16, 7pm

When my elderly mother moved into a nearby retirement community last year, I urged her to get a wearable alert bracelet. T...