How to build an automatic dog door for elementary invention convention?
373482
hook up a switch to the car door regulator and place it on the ground a few feet before the door and put something big and flat on top of it, this way when the dog steps on it, the door starts to open for him.
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Interesting. What version do you use?\n\nI believe what you ask for does not neccesary need to be programmed. Autocad is very strong in dimensioning stuff. Used chaned dimensioning as you like. I always used the keyboard a lot to speed up things (but that was uop to autocad 12 or so)\nIf you really want to use Lisp, you might as well start from scratch since you may need to adjust the downloaded scripts anyway to fit your particular layers and such. Once you start Lisp is really not that hard.\nYou probably yust want to see some examples.\n\nYou may find some stuff at sites like these:\nhttp://experts.about.com/q/autocad-1029/...\nhttp://www.autocadcentral.com/tutorials/...\nGood luck.
132355
wood doors, steel, screen, glass, garage-type, sliding, automatic, manual, doggy doors
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The ADA does not require automatic doors.\n\nIt would be highly unlikely you could get such a law passed because small business owners would fight you every step of the way. Such a law would require every small business to install automatic doors and would be prohibitively expensive.
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solution at http://users.goldengate.net/~jre/
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please visit \nhttp://www.macwindows.com/VPCautocad.html
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If you have to actually build this thing then a castle-style drawbridge would probably be the easiest thing I can think of. \n\nBuild a tower out of boxes, wood or whatever. If you’re real lazy simply stand a shoebox on its end and paint an archway on what was the bottom.\n\nCut a piece of cardboard slightly narrower than the base of the box and about 8 inches long. That piece of cardboard is your span.  Bend the first couple of inches of the cardboard up at right angles. Push thumbtacks through that bent up section and into the tower a few inches above the tabletop. That way when the span is lowered it will slope downwards on to the table.\n\nPass a piece of wire through a cotton spool and bend both ends around to make a U shape. Bend the ends of the “U’ shape into tight circles. You can now put a screw through those circles and into a piece of light wood/heavy card that you can glue to the tower somewhere near the top.\n\nPoke a hole in the free end of the span. Tie some thread through it. Pass the thread around the cotton spool a few times. \n\nYippee, finished in one afternoon.\n\nWhen you turn the spool the span will lift. The spool is both a wheel and a pulley system. The span itself functions as a lever. Because the span slopes downwards onto the table top it is an inclined plane/ramp.\n\nAttaching a couple of parts using screws and a couple more using nails/tacks gives you your screw and wedge.\n\nSimple. Next time don't procrastinate.
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http://en.wikipedia.org/wiki/Toggle_Mechanism
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type "convert autocad to arcview" into google
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http://www.autohotkey.com/
787165
There's a website perfect for this:\n\ndogpile.com
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First of all, congrats on a great idea.  I was so happy when I saw someone on ESPN at the Sunday night game with a B-Lock sign.  It made my night.\n\nMy first thought was to go buy one of those tri-fold displays like you use for business presentations, or more commonly, for science fair in like 8th grade.  Chop the two outside folds off and use the middle for your light switch.  If you want a 2D sign, just draw the switch, or if you're a big nerd/geek/drama-production-builder/my hero, use the leftover cardboard from the two flaps and actually make a 3D switch by cutting a narrow slit in the middle of the main switch section and sliding one of the two flaps through it to make a real working switch.\n\nLet us know how it goes!
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Small Business Administration ... Contact your local Chamber of Commerce and they can direct you ... Good Luck ... We Love Dogs!!!
36839
TAKE A EMPTY TIN CAN PUNCH A HOLE IN THE BOTTOM THREAD A STRING INTO IT THAT 2XS ITS LENGH TIE A SMALL KEY RING TO THE END OF IT THEN PULL THE STRING TILL THE KEY RING IS MID WAY INTO THE CAN AND TIE IT OFF AT THE BOTTOM OF CAN. VIOLA HOME MADE COW BELL
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Come on, use your imagination and do it yourself!  This is not hard at all!\n\n(good one, goth_brat)
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you might try a figure 8 knot, or a stopper knot.\n\nhttp://www.chockstone.org/TechTips/Stopper.htm
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A key that opens any lock