cool white (6500 K) XLamp XM-L LEDs deliver 1000 lm with 100 lm per
W efficacy at 3A. In a compact 5 x 5 mm footprint, XM-L LEDs offer the unique
combination of very high efficacy at very high drive currents delivering light
output and efficacy of 160 lm per W at 350 mA and up to 315 lm and 150 lm per W
at 700 mA, providing a 20 percent efficiency gain from the Cree current
industry leading XLamp XP-G LEDs.
XLamp XM-L LEDs are available in sample and
production quantities with standard lead times.
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.