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Re: Lawn sprinkler alarm

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  • normnet2003
    I have settled on a hall sensor and magnets on the front wheel after determining how to mount and keep water tight. Thanks all for the insight. Norm
    Message 1 of 9 , Apr 21, 2013
      I have settled on a hall sensor and magnets on the front wheel after determining how to mount and keep water tight.

      Thanks all for the insight.


      Norm

      --- In Electronics_101@yahoogroups.com, "normnet2003" <normnet2@...> wrote:
      >
      > I have been using a self moving lawn sprinkler however when it pulls 50' of water filled hose it can easily loose traction if it's wheels are on a root, cement, stone or even bare un-rooted ground.
      > http://ecx.images-amazon.com/images/I/31l8ZEKFQwL._SY300_.jpg
      >
      > I have built the notification part of the alarm by use of a walkie talkie and now need a way to detect the loss of forward movement.
      >
      > I am trying a MMA7361 accelerometer but I don't think it can reliably detect movement due to it's slow pace.
      > http://www.freescale.com/files/sensors/doc/data_sheet/MMA7361L.pdf
      >
      > What type of sensor would detect roughly a 1 foot movement over a 2-3 minute period?
      > Is their a dead reckoning type of sensor?
      >
      > Norm
      >
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