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There are two methods to making a prototype PCB: 1) Etch Your Own or 2) Send to a Prototyping Service. While there are many prototyping service options, most cause you to wait anywhere between 24 hours and 30 days before you get your boards back.

If you need a PCB done today, etching at home is a great option. Chemical etching involves all kinds of steps with all kinds of weird chemicals. If you don’t want your neighbors to think you’re the next Walter White, then mechanical etching is a better option. Which is why I bought an X-Carve from Inventables. It’s a CNC Milling Kit you build yourself.

Keep reading for my X-Carve CNC Review and first-hand experience on etching my first PCB. Plus, lots of pictures!

National Instruments changed the world of instrumentation when it released the VirtualBench. For about $2000 (USD), they give you a bench’s worth of equipment in a box about the size of Horowitz’s The Art of Electronics!  In this video review, I take a look at the VirtualBench’s 6 built-in functions.

This is a follow-up to my written review of the Virtual Bench. I use the same mixed signal oscilloscope (MSO) demo board, to point out what I like and don’t like about the VirtualBench.

VirtualBench Review Jump Points

Here are jump points to specific parts in the review.
Overall, I like the box and I think you’ll see why.  The iPad App is amazing.  The specs are impressive.  And overall, the instrument works well.

The first time I saw the VirtualBench from NI, I was amazed by its shear size—or lack of size.  At the time, the unit I had access to an uncalibrated pre-release unit at the Austin TechShop.  So I didn’t think it was fair to do a full review.  Fast forward to today.  Now that I’ve spent a week working with the VirtualBench I have some comments and thoughts.  What follows is a review of this “All-In-One Instrument” that runs $1999 USD.

The Gecko Zero EFM32 Weather Station Evaluation Board from Silicon Labs is intended to show off the low-energy or energy harvesting capabilities of the EFM32 Zero.  The ARM-based board has physical and cap sensitive buttons along with the LCD.

It comes pre-loaded with a demo program, which is the classic Space Invaders.

If you’re interested in more about the board, I wrote a road test of Gecko EFM32 on element 14. (Spoilers: I wasn’t impressed.  Not a bad board, but rough development environment.)

Bill Hammock’s “Engineer Guy” podcast series was one of my first video podcast subscriptions.  His explanation videos hit the right balance between “high level’ and “low-level” details in a few short minutes, which was actually an inspiration for the format of AddOhms.  With each of his videos, you will learn something and get a few laughs–which is rare for engineering related videos.

His book, with co authors,  “Eight Amazing Engineering Stories“, was added to my Kindle App as soon as it became available.  The book breaks down everyday objects and technologies down to their science and engineering fundamentals.

Let’s be honest, nothing here is something you can’t find on Wikipedia.  However, what you won’t find is the awesome presentation style, a trademark of Hammock.

If you want to know how elements like Silicon, Cesium, and Tungsten have made their way into our lives.  Or how Atomic Clocks, Microwaves, and Accelerators work–along with their back story, this book is for you.

Whenever I have a few minutes to fill, I find myself scrolling around the book to pick up new tidbits.

Review: 5 out of 5 LEDs
Review Rating: 5/5 LEDs

Overall, I give this effort a 5 LED review.  It’s not an expensive buy and deserves a place on any enginerd’s shelf, virtual or otherwise.