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12 volt project help needed!

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Discussion in 'General Electronics Discussion' started by letsg0fishin, May 25, 2014.

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  1. May 25, 2014 #1
    letsg0fishin

    letsg0fishin

    3
    0
    May 25, 2014
    I am wanting to build a 12 volt automated chicken coop door. I am planning to use a photo cell to activate the door, what I need help with is a circuit that will turn the motor one way while the photo cell is receiving light and reverse polarity when it isn't. I am going to put limit switches at the top and bottom to stop over travel, but the photocell switch (or relay?) has me stumped.
     
  2. May 25, 2014 #2
    Electric Al

    Electric Al

    84
    7
    Jan 16, 2014
    Check out Arduino Instructables Mobile Chicken Coop etc.

    This may help !

    Sorry I can't figure out how to send you the link !
     
  3. May 26, 2014 #3
    letsg0fishin

    letsg0fishin

    3
    0
    May 25, 2014
    That seems to be WAY more complex than what I'm thinking... Maybe I will try another route. A timer would probably be equally qood.

    Thanks, though!
     
  4. Jun 5, 2014 #4
    davpankhur

    davpankhur

    25
    3
    Jun 5, 2014
    bit late... but a photocell relay module would work good.
    It has a photosensitive end to detect light, a dial to fine tune your light requirements and a 1 channel relay.

    The relay has 3 contacts, so like like a toggle. when a certain amount of light is detected, the relay switches to one pair of contacts, when there is no light or the relay switch module is not powered, it switches to the default. thus you just have to wire the motor to spin both ways and it should work well with limiter switches.

    let me know how you go.
     
  5. Jun 5, 2014 #5
    letsg0fishin

    letsg0fishin

    3
    0
    May 25, 2014
    That sounds like what I'm looking for. thanks! Off to see if I can find one!
     
  6. Jun 6, 2014 #6
    davpankhur

    davpankhur

    25
    3
    Jun 5, 2014
    not sure if we can post links here, but just google: 12v photosensitive relay - ebay should pop up
     
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