Giles Bowkett wrote: > The ideal solution would be something incredibly simple, where a skull > would only become alerted to the wand's existence if the wand was in a > particular range of X feet, with X ideally being a small number like > 5, and further, where the wand's signal could only be picked up by any > one skull at a time. One suggestion I've gotten is to use a TV remote > inside the wand, and add remote sensors to each skull, but I think > more elegant solutions are possible. I just don't know what they might > be.
I would think that proximity triggering could be achieved with an inductor, (i.e capaciflector); http://www.solarbotics.net/library/circuits/sensors_prox.html however, it would be hard to trigger one skull at a time that way. You might be able to have a wand with 4 buttons and use wireless remotes; http://www.smarthome.com/4000.html Velleman sells some kits that do that sort of thing and there are various domestic distributors; http://www.velleman.be/es/en/product/list/?id=344678 For the theory part of proximity sensors (capacitive inductors); http://weewave.mer.utexas.edu/MED_files/Former_Students/thesis_dssrtns/Gupta_V_abstrct_TOC.html Off-the-shelf; http://www.ab.com/sensors/products/proximity_sensors/ solutions that would require building some hardware; http://www.qprox.com/products/qtouch.php I'll keep looking. -Nick -- _ __ ____ ____ (_)____/ /__/ __/ / __ \/ / ___/ //_/ /_ / / / / / /__/ ,< / __/ /_/ /_/_/\___/_/|_/_/ Nicholas S. Frost [EMAIL PROTECTED] ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org
