AutomationDirect offers the Cutler-Hammer Enhanced 50 series of high-performance photoelectric sensors, manufactured by Eaton, which includes thru-beam, polarized reflex, diffuse and clear object models, designed in a rugged industry-standard rectangular package. Available sensing ranges vary from 45 inches to 500 ft. Flexibility of input supply voltages (10-40V dc and 12-240V dc/24-240V ac) and output types (relay, transistor, or solid-state relay) makes system integration easy. Features include light/dark operation selection, gain adjustment and multi-color LED indicators. All sensors are IP67 rated, and are available with a variety of cabling choices, including micro and mini quick-disconnect styles or a 6-ft integrated cable. Matching cables and mounting brackets are also available. AutomationDirect http://rbi.ims.ca/4912-536
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.
Highly regarded engineer and physicist Ransom Stephens speaks with Design News about his extensive science and engineering background, the serious yet funny study of neuroscience, and how one primes their brain for innovation.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
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