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simple wireless transmitter and reciever to call an elevator

Discussion in 'Electronic Design' started by batman, Oct 5, 2006.

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  1. batman

    batman Guest

    I live in a high rise building that is about 30 years old.
    Unfortunately the 2 elevators which service my floor are completely
    retarded and seem to be completely un aware of each other as they
    sometimes will both open when called or not stop on floors or other
    obscure behavior.

    In general this is not too big of a problem since eventually they do
    come to my floor and take me where i need to go. During peak travel
    times, however, I can wait for the elevator to get to my floor (out of
    20) for as long as 5 minutes before it gets there.

    knowing this, i have even gone in the hallway, pressed the button, gone
    back inside, brushed my teeth, come back out, wait a minute and finally
    see it arrive.

    being somewhat technically savvy and in need of a fun project- i would
    like to install a simple receiver inside the button panel in the
    hallway and have a small fob in the apt. ideally, i want to be able to
    "press" either the up or the down button from my apt so that i can call
    the elevator in advance before i get to the panel. i don't have too
    much interference- perhaps 40 feet max with 4 walls in between.

    i have never done any wireless projects but envision a simple 2-button
    transmitter and a receiver which will momentarily short the same
    circuit that the button does when it is pressed. in a perfect world,
    the receiver would be powered by some circuitry already in the panel
    and the fob would be like a car alarm fob or a garage door opener type
    of transmitter.

    Any help (including parts i actually would need [with weblinks]) is
    much appreciated.
  2. SioL

    SioL Guest

    Well, how about walking down the stairs?

    Healthier and faster...

  3. jorogume

    jorogume Guest

    Maybe this site can help

    I don't know much about RF but this project looks interesting.-->

  4. Not if you can't climb the stairs. Not everyone is in good health
    and has two good legs.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  5. AndyS

    AndyS Guest

    Andy writes:

    You are looking for a high tech solution to a simple

    Here is a better idea:

    Push the elevator button and lean a broom against
    the elevator doors.

    When the elevator arrives, the doors will open.
    The broom will fall down, into the elevator.

    The elevator doors will be unable to re-close
    because the broom will be laying across the
    threshold, blocking them.

    Finish brushing your teeth and the elevator
    will be waiting for you. Remember to
    take the broom with you, and tell no one
    what you are doing.....

    Andy in Eureka, Texas

    ( retired engineer who prefers low tech solutions to
    low tech problems )
  6. Guest

    Well, uh, the OP mentioned "peak travel times"... what's to keep a
    manager from picking up the broom and throwing it out?
  7. AndyS

    AndyS Guest

    Andy comments:
    Nothing, if the manager finds out what's going on....

    If he happens to come up to that floor and the broom falls
    down, he'll just think some careless person left it there.......
    and set it outside. Then the OP will know that he has been
    discovered.... And change to another method..... He's
    smart.... He can adapt.....

    It's a heck of a lot more likely to work than having an
    amateur whose never built anything taking apart the
    elevator and putting in some claptrap electronics stuff, and
    maybe being billed for the repairs when it is
    well as vandalism, violating a lease, and I don't know what-all.....

    No, a broom is good. Maybe a walking stick.... Remember,
    it will only be used for a minute or so, so he can get to
    the elevator before the doors close and it goes away......Heck,
    he can tie some cowbells to the handle so he can
    hear it fall.......It ain't rocket surgery... :>)))

    ... we are, of course, assuming the manager doesn't read
    this newsgroup... :>)))))

    Andy in Eureka, Texas

    (where there's not an elevator within 20 miles )
  8. Guest

    Brilliant! So even if the elevator comes down from another floor, and
    is full of people, someone would just put put the broom back outside.
    You're right... it's a broom, not an EMP shock rifle or anything

    Highly unlikely. Unless the manager got his MBA after getting his
    engineering degree... my cousin did that...
    Wow, a city of 340 people? Neato!,_TX


  9. AndyS

    AndyS Guest

    Andy writes:
    Heck, we got a lot more now than in the 2000 census. I bet at
    least 30 or 40 more have moved here...

    We have no traffic lights, no police, no jail, no liquor stores,
    and only one cemetery. Situated on the shores of the third
    largest lake in Texas, this idyllic wilderness setting is home to
    an amazing diversity of wildlife, including the legendary
    Texas redneck. In fact, in 2000, the Texas wildlife association
    counted approx 340 nesting rednecks, secure in their wild life.

    Andy in Eureka, Texas

    ( If you have more than four singing fish on the walls in
    your home, you might live in Eureka, Texas )
  10. Jim Thompson

    Jim Thompson Guest

    Does your house have wheels, or is it propped up on cinder blocks ?:)

    ...Jim Thompson

  11. If you know who Jeff Foxworthy is, you ARE a redneck! ;-)

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  12. Jim Thompson

    Jim Thompson Guest

    I have my Sirius radio essentially permanently tuned to CH 103 ;-)

    ...Jim Thompson
  13. AndyS

    AndyS Guest

    Does your house have wheels, or is it propped up on cinder blocks ?:)
    ...Jim Thompson

    Well, our local school had a car wash to raise money to buy
    a new trailer hitch for city hall....

    And Jeff Foxworthy's birthday is a school holiday. All the city
    services shut down, and the gas station doesn't open back up
    till the mayor runs out of bait......

    Andy in Eureka, Texas

    ( If your local owl population is used to keep stray cats in
    check, you might live in Eureka, Texas )
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