Battery power in home tools is critical. Remember those first power drills screwdrivers. They could barely turn themselves much less a screw. There's nothing worse than being in the middle of a home project and have your cordless drill crap out. The worst offender for premature wimping out are cordless vacs, namely the Black & Decker DustBuster. I have two 7.2 volt DustBusters and they a both don't suck, BUT THEY"RE SUPPOSED TO!!! I get two minutes max of sufficient power to make using them worthwhile. In other words, I get about a third of my car done of my car before the &^%#%@) unit dies. The earlier 4.8 volt DustBuster was useless junk and the 7.2 volt units didn't improve on it much. Somehow the 7.2 volt unit earned three and half stars in Amazon reviews…maybe I got two lemons. Black & Decker has a huge line of corded and cordless portable vacs. In cordless, they come in many voltages now: 9.6, 14.4, 15.6 and 18 volts. The 18 volt PHV1800 gets four and a half stars on Amazon's user reviews, but costs $55 while less energized units are consider less.
With major product releases coming from big names like Sony, Microsoft, and Samsung, and big investments by companies like Facebook, 2015 could be the year that virtual reality (VR) and augmented reality (AR) finally pop. Here's take a look back at some of the technologies that got us here (for better and worse).
Good engineering designs are those that work in the real world; bad designs are those that don’t. If we agree to set our egos aside and let the real world be our guide, we can resolve nearly any disagreement.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.