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Motorized glass door

franktank

Hi all

 

I am not an EE but my projects frequently make me put on that hat. Lol.

 

My ma has requested an automated system to open the sliding glass door for her dog.

 

The typical dog door inserts really won't work as her dog is a monstrosity and would get stuck in or smash the biggest ones I've seen, and if we built one to fit, the door would be useless.

 

The idea so far is a motor and a track to open the door. That sounds easy.

 

What I need your help to figure out would be some form of (arduino/raspberry pi) based RFID sniffing controller. Would need adjustable sensitivity for the sensor, and some means of overriding it so a person could open it or lock the dogs out, etc.

 

I welcome all ideas!

 

Thanks.

 

Frank

Parents

  • Kimage

    So I found a thing,  RC522

    Look at this on eBay http://www.ebay.com/itm/301820026116

    This listing has pretty decent info

     

    It's an RFID sensor. Looks like it's meant for arduino but would be sweet if it could be used as a stand alone device

     

    Any advice on the hookup of the thing would be good. I see ground, 3.3 hot, all I need is the terminal that goes hot when it sniffs and I'll be in business, right?

     

    I scratched up a system that should work,  some obvious things like power leads or grounds to transistor have been omitted for now.

     

    Oh, the last time I had a weird project I found some trouble finding a transistor that would accept a hot signal to make a hot output? A little advice on that would be appreciated too. Lolz. Suggested part numbers or hookup methods and such.

Reply

  • Kimage

    So I found a thing,  RC522

    Look at this on eBay http://www.ebay.com/itm/301820026116

    This listing has pretty decent info

     

    It's an RFID sensor. Looks like it's meant for arduino but would be sweet if it could be used as a stand alone device

     

    Any advice on the hookup of the thing would be good. I see ground, 3.3 hot, all I need is the terminal that goes hot when it sniffs and I'll be in business, right?

     

    I scratched up a system that should work,  some obvious things like power leads or grounds to transistor have been omitted for now.

     

    Oh, the last time I had a weird project I found some trouble finding a transistor that would accept a hot signal to make a hot output? A little advice on that would be appreciated too. Lolz. Suggested part numbers or hookup methods and such.

Children
  • in reply to franktank

    The problem with this idea is that you may end up crushing your ma or her dog. The system must be safe which means that it must have some means of detecting that it is closing on a human/dog. If you can design it so it is ALWAYS safe to open then that make things easier. An actuator powerful enough to open and close a sliding door will be capable of causing injury.

    Don't use a PI !!!! - Pi based system could never be reasonably demonstrated to be safe unless there were so many Pi independent interlocks that the Pi is redundant anyway. An Arduino is a little more hopeful but I wouldn't trust my dog's life to one !

     

    Google for some information on factory automation and safety to get some ideas of the stuff you should be thinking about.

     

    I can't read you sketch - when I tried to rotate it half of it got cut off.

     

    Try using black ink on plain paper and scan in black and white - or even better use a diagram editor or CAD (free ones exist).

     

    MK