The trials of working with brushless DC motors for the first time.

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We've all worked with DC motors at some point. Even if you aren't a big hardware person, you've probably at least picked up a motor as a kid and touched a battery to the leads causing it to whir to life. These are usually standard DC motors and not their brushless relatives. Brushless motors require a bit more work since you are manually controlling things that are normally taken care of with the … [Read more...]

Introduction to the H-bridge motor controller

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[Chris] sent us this fantastic tutorial, introducing beginners to H-bridge motor drivers. While many of you will consider this stuff basic, those who are trying to expand from building only things the arduino board can handle to bigger more expansive (and powerful) projects will find this quite helpful.  [Chris's] tutorial is very in depth, not only going through the construction of the basic … [Read more...]

Wear a helmet, rollerblades with attitude

All this time I kept thinking 'why hasn't his legs slipped out from under him' and then it hits me.

Wireless controller, more powerful custom-made motors, stronger frame, and with a name like DeathBlades, we can't think of a single reason why you would prefer heel treads, well everyone was young at one time. [Charleg] has been testing out a slightly new frame, despite having only half the motors necessary, and is getting great results hitting around 23Wh/mi. If you're looking to build your … [Read more...]

Marvelous Magnetic Machines

[HP Friedrichs] wrote in to tell us about an upcoming book titled Marvelous Magnetic Machines. Ordinarily, we skip over promotional hype. After watching his promo video though, we couldn't help but share. We want a copy of this book. In this book you'll find details on how to build a number of different motors from scrap. You can see several variations in the promo video. He also notes that the … [Read more...]

R/C airplane motors from computer trash

croc12 (Custom)

Here's something that the R/C airplane crowd might think of as old news.  These directions show us how to rework floppy drive and CD Rom motors to be high power airplane motors.  There are several listed, with details on each, but those unfamiliar might want to start with the most basic CD Rom version. It covers winding your own copper and installing the magnets in the "bell", putting it all … [Read more...]

Steven Laurie’s Art of the Motor

We've served up dozens if not hundreds of machines with a practical purpose, but we are always interested in machines like those [Steven Laurie] makes, which serve no other purpose than looking impressive, spewing smoke, leaving tire marks, and making a lot of racket. We'll give you the scoop on Steve's motor art after the break. … [Read more...]