Chris Kirtley wrote: >Dear Dan, > >No - nobody has done this. Just lots of speculation. The one guy who has >done something (Trevor Bayliss) in England, used a mechanical generator >(like those hand-grip torches). > >If you work it out (as I have done) there simply is nowhere near enough >energy (several orders of magnitude) in piezo-electric methods. > Hi Chris, You may be right concerning producing enough power to run a transmitter. However, still worth investigating some of the stuff various people are doing in the area of "wearable computers". MIT Media Lab, etc - those guys/gals have done all kinds of stuff like this. One article talks about generating 17W during a brisk walk: http://mevard.www.media.mit.edu/projects/wearables/newsci.html They also have an interesting way to use the body as a LAN: http://www.media.mit.edu/physics/projects/pan/pan.html cheers, - Dan Michaels Oricom Technologies http://www.users.uswest.net/~oricom =================================== -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.