Elevator

Discussion in 'The Projects Forum' started by kot89, Jan 19, 2011.

  1. kot89

    Thread Starter New Member

    Jan 19, 2011
    1
    0
    Hi im working on an elevator project and i have a couple quiestions.
    How does the pulley system work, cuz i see everyone using weights?
    I got an idea on how to use a micro controller but i wanna try using logic gates except i kind of forgot them. How can anyone kind of explain or give me an idea on logic gates. I for gto to mention that i plan to use sensors to tell wchich floor ur on.
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    See this Wikipedia entry; about halfway down:
    http://en.wikipedia.org/wiki/Counterweight
    Then look here:
    http://en.wikipedia.org/wiki/Elevator
    Then look at this original drawing for the first elevator counterbalance patent:
    http://upload.wikimedia.org/wikipedia/commons/f/f9/ElevatorPatentOtis1861.jpg

    The most common logic IC series are the 74xx (TTL) and 4000 (CMOS).
    TTL needs 4.5v to 5.5v for power.
    CMOS can operate on ~3v to ~16v.

    Wikipedia also has a list of 74xx and 4000 series ICs:
    http://en.wikipedia.org/wiki/4000_series
    http://en.wikipedia.org/wiki/List_of_4000_series_integrated_circuits
    http://en.wikipedia.org/wiki/7400_series
    http://en.wikipedia.org/wiki/List_of_7400_series_integrated_circuits
     
Loading...