Hmmm - we're heading toward a small system with a MIPS, ARM, or PowerPC chip in it, I think. Whoops, now we want a Linux kernal. How big a hard drive do you think we'll need for this application? What about USB, Firewire, Gigabit ethernet? Do we need a 64-bit CPU?
Sigh. Sorry, I got out of control there. We should be able to pull this off with one of those little systems that you program in Basic. (grin) steve On Jun 1, 2005, at 10:13 PM, [EMAIL PROTECTED] wrote: > David: > > Here's a thought.......you could use a alarm system mag/reed contact > unit to > pull a ground and fire a one shot timer type ckt. using an NE555 timer. > I've got an ol' RS enjuneer's handbook 'round here....saw in one of the > tumultuous piles that exist in my office.......You know the one that > Forrest Mims > wrote for them in the good ol' days, when they sold electronics parts > instead of > cell phones. > > > So.. the thought being...you could rig this lil circuit to fire on the > N.O. > to N.C.and pull the ground to fire the one shot, then when the door > closes > the reed would go back to N.O. and the ckt. would reset for the next > pull.....found it.....yeah a one shot tone burst set at 880Hz...and > you could build a > little Power supply...or ...hey run it off a ..bbb.....battery! > > Steve L. Martin > _Surf Side Sound, Inc._ (http://www.surfsidesound.com/) > _________________________________________________________________ > KX-T Mailing list --- http://kxthelp.com/ > Subscription changes: http://kxthelp.com/mailman/listinfo/kxt _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
