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To honor our 15th anniversary, Pete digs into the electrical properties of crystals.
Did you know… that you give crystal for a fifteenth anniversary? Yeah, I didn’t either. But did you know that we are entirely dependent on the little electronic variety of crystals, and yet we mostly just strap them to a microcontroller and forget about them? The microcontroller wouldn’t function without a clock source, would it? Oh sure, some of our fave uC’s have an internal RC clock that would serve, and you could arguably go to the moon on an ATMega328 running that way. But most our lives run at much higher speeds these days, and crystals are still at the heart of it.
But what exactly are these things? How do they work? Is it magic? Well, maybe a little. In this video, I’ll give you a quick-ish rundown on what they’re all about. And while it’s not primarily about oscillator design, I’ll show you a couple of circuits to play with at the end, comprised of parts you’ve probably got lying around.