Why Do Electronic Components Have Such Odd Values?

If you’ve been around electronics for a while, you’ve probably noticed that components like resistors, capacitors, zener diodes and inductors come in some odd values. Looking at the chart above, there seems to be no clear rationale behind the values, but there is a pattern. 47kΩ resistors and 22μF capacitors are everywhere, but not 40kΩ or 50kΩ resistors, or 20μF or 30μF capacitors. So what’s the deal? It all has to do with preferred numbers.

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Direct Register Manipulation on your Microcontroller

I really enjoy what I do here at Digilent. I get to work with some of the best tools available for students, professionals, and hobbyists alike. One of the things I like most is how easy it is to get your hands on a good quality microcontroller board, like the chipKIT Uno32. But even once you get a good board, it will still need to be programmed.

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Reloading the Bootloader on chipKIT Boards

The other day I decided to program my chipKIT PRO MX4 board using MPIDE. Long story short, it wasn’t working and I couldn’t figure out why. So I posted my question to the forum and waited for somebody else to find the answer. I got impatient because the answer didn’t come within the next hour, so like a good boy, I started digging into the reference manuals. Come to find out, if you use the chipKIT boards with MPLAB X, the bootloader will be overwritten and must be reloaded if you want to use the board with MPIDE. Since I had done some programming with MPLAB X in assembly language, that was clearly my problem. Should be a simple fix, right? Well, it is.

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With So Many Starter Kit Options, Which One Should I Choose?

We here at Digilent Inc. are proud to be a leading hardware provider for educators, students, professionals, hobbyists, and hackers alike. We have developed numerous devices to help with every stage of developing projects, from learning the basics to prototyping to finished projects. If you can think of it, we have the hardware to help you build it. So it should come as no surprise that we have a few options to choose from should you decide you want a parts kit to go along with your new Electronics Explorer Board or chipKIT Max32. So, which kit is right for you? Well I’m here to help make that decision a little easier. I will be discussing three kits that we offer: the chipKIT Starter Kit, the Analog Parts Kit, and the TI myParts kit.

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Tools for the Electronics Hobbyist

In 2010, I decided to go back to school and earn my degree. After a few semesters of class and a few months working part time retail at RadioShack, I had learned a few things and decided to start building. At the time, all I had were some Craftsman screwdrivers that my dad had given me for Christmas, a few pliers, some wire cutters, and a hammer. Basically the kind of stuff you would find in an all-in-one homeowner’s tool kit. Needless to say, those tools weren’t really helpful when it came to building a motion sensing AC switch, or soldering together some under-cabinet lighting. I needed to get the right tools for the job at hand.

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