When you turn Ojarumaru Man on, he says something (in Japanese) about the firefly on his hat and waves his tiny, 9-gram plastic arm up and down through 60 degrees of motion. Because of O-Man's peaceful, Zen-like demeanor, engineers wanted a completely silent method of actuation that would be cost-competitive with an inexpensive, single-speed motor. (In fact, the original design called for a traditional electromagnetic motor, but engineers rejected it because it was too noisy.) In this simple application, engineers mounted Oman's arm to the output shaft of a Nano-Muscle RS-70-CE actuator, which runs off of two AA batteries and uses shape memory alloys (SMAs) as the motive force. SMAs undergo a solid-state phase change when their temperature drops below a specific transition point, providing constant power output across the entire stroke length and a force-to-weight ratio on the order of 15 kgf/m2.
Nanomuscle offers a new commercial development kit for its RS-70-CE actuator for $199.95 or toy development kit for $179.95. For details, go to http://rbi.ims.ca/3849-563
This Gadget Freak Review looks at a keyless Bluetooth padlock that works with your smartphone, along with a system that tracks your sleep behavior and wakes you at the perfect time in your sleep cycle to avoid morning grogginess.
Siemens released Intosite, a cloud-based, location-aware SaaS app that lets users navigate a virtual production facility in much of the same fashion as traversing through Google Earth. Users can access PLM, IT, and other pertinent information for specific points on a factory floor or at an outdoor location.
Since 1987, teams of engineers around the world have built solar cars to participate in a road race around Australia called the World Solar Challenge, being tested on the race time, kilometers traveled, practicality, and energy used by the vehicles they invent.
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.