On Mon, Dec 22, 2014 at 09:30:32AM +0000, alan.b.pearce@stfc.ac.uk wrote: > . In a vain attempt to bring us back ... humans > > have something like MEMS, but I've not seen any relationship between > > ultrasonic tartar removal and balance or hearing loss. >=20 > Would you not consider the ear drum something like a MEMs device? Middle ear, functional similarities, for acceleration and rotation. But no datasheet, the data format is unique to each device, the pinout changes from device to device, the pinout changes over time, no built-in diagnostics for failure detection, limited operating temperature range, and there's a problem with availability. Doesn't meet RoHS or CE. I've not heard of any tests with ultrasonic baths. --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .