Help

Discussion in 'The Projects Forum' started by mdlewis, Feb 2, 2012.

  1. mdlewis

    Thread Starter New Member

    Feb 2, 2012
    2
    0
    I have got to start stop motor from a smoke alarm ill send moneyif u can help
    for project by 9 am
     
  2. luvv

    Member

    May 26, 2011
    186
    31
    *disclaimer: if electronics knowledge where height, i would be the dwarf around here.*

    That said, i think you could use a op-amp like the 741 as a comparator to sense the speaker on the smoke detector.

    Then use a diode protected mosfet to power the motor from a separate battery.

    Honestly tho, if this project has lives depending on it..i suggest you abandon it now

    Best of luck

    -luvv-
     
Loading...