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Thread: More techno geek stuff

  1. #1
    Join Date
    May 2007
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    Kansas City, Missouri
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    More techno geek stuff

    Seems like about ever 3 - 4 months, my daughter or wife call saying they left the house for a walk and forgot their keys and the keypad on the garage door won't work. It's either user error, which the pad isn't very intuitive, or the battery is dead on it. And it usually occurs when I'm out of town or at work.

    So I've been playing around with some new devices that utilize the very affordable ESP8266 Wifi chip, the Nodemcu (http://www.amazon.com/Wireless-devel.../dp/B01ACJIAPU). The device can be programmed using it's native language, Lua (http://nodemcu.com/index_en.html), or using the Arduino IDE (http://www.seeedstudio.com/recipe/11...duino-ide.html).

    These are becoming pretty popular for home automation and monitoring systems as they are easy to program and sensors/modules are readily available for just about any type of application.

    Anyway, I've programmed this one to host a web page, which the user must enter a code to open the garage door. They also have to have a device that is on my secured home wifi. So any of my family members that have their phone connected to my wifi can open the door.

    This is the proto type, simply just the nodemcu (3.3v at pins), a logic level converter for 3.3v to 5v connections, and the relay (5v). It has 3 other pins for door sensors to show if the door is opened or closed.
    Click image for larger version. 

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    I tapped it into my opener button to test it out, the door sensors aren't connected yet in this video, and I bypassed the door code for testing.


    With this, any family member can open the door and I can do it for them remotely if need be. I also plan to send some messages to my email when the door is opened and closed.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  2. #2
    Join Date
    Aug 2007
    Location
    Reno NV
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    Now I just need to adapt that to an automated chicken door opener closer thingy

    Excellent!
    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  3. #3
    Join Date
    Jul 2011
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    The Gorge Area, Oregon
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    So the first thing I'm confused by is .. you can park in your garage

    Cool setup, though

    Can you wire the email alarm to a sensor so if the regular opener is used it also triggers? or are you planning to bypass the regular opener all together?

  4. #4
    Join Date
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    ABQ NM
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    Very cool. I have no idea how you did it, but the outcome is great.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  5. #5
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    May 2007
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    Thanks Guys. Brent, other than needing to control a motor, should be pretty much the same code. I've got a couple of these motor shields on order to try something similar... http://www.ebay.com/itm/like/351626621523

    Quote Originally Posted by Ryan Mooney View Post
    So the first thing I'm confused by is .. you can park in your garage

    Cool setup, though

    Can you wire the email alarm to a sensor so if the regular opener is used it also triggers? or are you planning to bypass the regular opener all together?
    Ha, this is her garage, so yes, there is parking in there. Sometimes I can get mine in the shop, but it's a rare occasion. The open/close sensor will work independent of the open/closing relay, so it will notify anytime it changes state. I'm planning to use two of these magnetic switches (http://www.amazon.com/10BS-MC27ST-Ma.../dp/B015OXO1ZW) on each end of the opener's shaft and the magnet will ride on the carrier to trigger the switch that it's by, or show an in-between state if neither are triggered.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  6. #6
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    That'll work! Those switches did not review well though hopefully yours work better than the ones the folks on amz reviews got.


    For the chicken door wouldn't you want to use a light sensor instead so open when light, closed when dark?

  7. #7
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    Quote Originally Posted by Ryan Mooney View Post
    That'll work! Those switches did not review well though hopefully yours work better than the ones the folks on amz reviews got.


    For the chicken door wouldn't you want to use a light sensor instead so open when light, closed when dark?

    Yep, Simple change, but also need to add the code to control a stepper motor to open/close the door. They want 240$ for one. I'm sure I can build one for less than 30$
    Programmer - An organism that turns coffee into software.
    If all your friends are exactly like you, What an un-interesting life it must be.
    "A door is what a dog is perpetually on the wrong side of" Ogden Nash


  8. #8
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    Quote Originally Posted by Ryan Mooney View Post
    That'll work! Those switches did not review well though hopefully yours work better than the ones the folks on amz reviews got.
    The review was accurate, the NC side doesn't work on these, which is fine, I needed the NO side anyway. So I wouldn't recommend them either and will be giving them a crappy review too.
    Darren

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  9. #9
    Join Date
    Mar 2015
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    Parker County, Texas
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    I'm not sure just what to say. It's cool. Very ingenious. But, I'd tell them to quit forgetting their danged keys. I forgot I don't have a garage. I do have a tractor shed, though. It don't have a door, though. Never mind. I guess I need more coffee.

  10. #10
    Join Date
    Feb 2008
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    East Freeetown, Massachusetts
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    Do you need electricity for that to work?


    My system is a little less tech savy.

    #4 finish nail = 2 cents
    One key = $2.00 ?

    Bank nail into some place secret

    Hang key on nail

    Unlock door - go inside - put key back

    No batteries, works even if electricity is out.

    Certain people know where it is.

    Think you can find the key? Good luck!

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