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Garage Door Open/Close sensor

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  • Garage Door Open/Close sensor

    I'm working on making my garage doors automatically open/close when I pull up to them.

    What kind of sensor would I use to determine whether a garage door is opened or closed?
    My Nearly Complete Car:
    http://www.mp3car.com/vbulletin/show...ed-car-pc.html

    Micro Control Center... Control Your Car Across the Internet
    http://www.mp3car.com/fusion-brain/1...-internet.html

    Website: (It's a work in progress, really. All my projects have taken me from ever really developing it.)
    http://paulfurtado.com/

  • #2
    you could use a momentary switch with a actuator arm, or maybe a optical sensor near the top of the doors travel?
    My OLD 2001 Mitsubishi Eclipse GT:
    "The Project That Never Ended, until it did"


    next project? subaru brz
    carpc undecided

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    • #3
      I use a magnetic reed sensor on mine. When the door is down, the magnet is next to the sensor.

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      • #4
        Use a reed switch or a capacitive proximity sensor.
        Both will work great. Optical sensors will get dirty and then read incorrectly, conventional switches (actuators or momentary) may also work but I like to keep things as simple as possible and read switches and prox sensors are about as simple as it gets and they work great for this type of application.
        New Age Garmin - Skin for RR
        New Age Slider - RR SKin In Progress
        "It's called CODE because I don't want you to know"

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        • #5
          You should use two sensors, one at the top and one at the bottom. Then your opener can determine if the door made it all the way up or not. I know my piece of poop Wayne Dalton iDrive garage door opener acts up quite a bit in cold weather.
          New Age Garmin - Skin for RR
          New Age Slider - RR SKin In Progress
          "It's called CODE because I don't want you to know"

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          • #6
            Just be glad you dont live by Norad. Garage door openers in our neighbourhood just randomly go up and down...
            Fusion Brain Version 6 Released!
            1.9in x 2.9in -- 47mm x 73mm
            30 Digital Outputs -- Directly drive a relay
            15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
            Buy now in the MP3Car.com Store

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            • #7
              Originally posted by ThunderStick View Post
              You should use two sensors, one at the top and one at the bottom. Then your opener can determine if the door made it all the way up or not. I know my piece of poop Wayne Dalton iDrive garage door opener acts up quite a bit in cold weather.
              LOL, my iDrive acted up the first winter about 6 or so years ago. Unhooked it and manually tried. There was a spot where it got stuck really hard! Sanded that down and never had a problem since. The old 1/2 HP must have tackled that before but it was a lot slower and louder.

              Back on topic

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              • #8
                Due you use current sensing, or just crush kids, heads & obstacles? And cats.

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                • #9
                  You'd be surprised how many of them don't have current sensing. My old one would have popped a basketball, and that's why the motor burned up.

                  I think he wants a sensor for an external circuit though. I used the reed switch, connected to a PIC that converts that to pulses on 2 outputs connected to optocouplers which are connected to a little X10 slimfire remote that my PC receives as on or off, along with an X10 PIR sensor out there so it knows if I'm coming or going.

                  The hard part will be detecting the car as soon as it's in the driveway.

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                  • #10
                    Originally posted by Curiosity View Post
                    The hard part will be detecting the car as soon as it's in the driveway.
                    Magnetic induction loop? Seems simple to me!
                    Fusion Brain Version 6 Released!
                    1.9in x 2.9in -- 47mm x 73mm
                    30 Digital Outputs -- Directly drive a relay
                    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
                    Buy now in the MP3Car.com Store

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                    • #11
                      Without resurfacing the driveway?

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                      • #12
                        Originally posted by Curiosity View Post
                        Without resurfacing the driveway?
                        wire and duct tape?
                        Fusion Brain Version 6 Released!
                        1.9in x 2.9in -- 47mm x 73mm
                        30 Digital Outputs -- Directly drive a relay
                        15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
                        Buy now in the MP3Car.com Store

                        Comment


                        • #13
                          Good idea! Somebody might steal it if you just lay it out there.

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                          • #14
                            Okay awesome, reed switch is exactly what I want. Thanks.

                            Getting the garage door to sense when the car is in the driveway is actually the easy part. It will actually happen the other way around.
                            I have 3g internet in my car and GPS.
                            I'll use the program, Proximity, on my sheeva plug and that will figure out when I'm near my house with GPS.

                            I have an old, old, old laptop which uses minimal amounts of power that I'll mount up in the rafters of my garage. I'll hook that baby up to an extra fusion brain, and write a C# app to control the doors. Hook it into my home's wifi network, open up a port for it, and tell proximity to send it the right command.

                            I like how after doing so much in the Car PC hobby ideas like this seem trivial to accomplish. I would have never thought about doing something like this two years ago.
                            My Nearly Complete Car:
                            http://www.mp3car.com/vbulletin/show...ed-car-pc.html

                            Micro Control Center... Control Your Car Across the Internet
                            http://www.mp3car.com/fusion-brain/1...-internet.html

                            Website: (It's a work in progress, really. All my projects have taken me from ever really developing it.)
                            http://paulfurtado.com/

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                            • #15
                              Sounds awesome, be keen to trial this or what i was thinking was you could simply wire up your controller for the door via serial on/off and use an app to translate this to trigger the remote button when touching a button on the screen.

                              (did i make sense there)
                              New Car PC Build list in progress

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