OMEGA's new DOB21 is a compact benchtop dissolved
oxygen meter and an amperometric dissolved oxygen probe with automatic
temperature compensation for field or laboratory applications. It features a
RS232 output, auto calibration for all parameters, salinity and barometric
pressure compensation, and data logging up to 99 points. Programming is done
via a three-button keypad and stored in the non-volatile memory. This product
is ideal for testing biological samples, water and waste water, as well as
aquariums. Price starts at $1008.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
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.