Add an additional garage door sensor

selvan777May 24, 2007


I have a Craftsman 1/2 horse model 139.53962SRT.

I've found it extremely useful having the sensor raised to match the car so the door will not close if the car is in the way.

But now with little ones running around I've put it back to it's proper location but would like to know if I can add another for the car, perhaps even by aliening a couple mirrors.

Any thoughts or remedies to protect the car without the string and ball trick and/or stoppers placed on the floor would be appreciated.



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This is something that has never come up before but I just can't imagine it working or how you would design it. The old ball on a string is much cheaper.

    Bookmark   May 24, 2007 at 7:01PM
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Here's my thought on designing an inexpensive mirror trick

The big question is though, do you think the existing sensor circuit can carry the beam an additional round trip across the width of the door in a letter "Z"?

Let me explain the "Z", we have two existing sensors (S1 & S2). Place S1 at the bottom of the door where it should be (this is also the bottom right end of the "Z"), place S2 higher up aligned to protect the car (this is also the top left end of the "Z"), purchase two more sensor brackets and place them at each bend on the "Z", now attach a mirror to each of the two purchased brackets and align them to reflect the beam from S1 to S2.

Do you see what I'm saying, kind of difficult without pictures, let me know. Maybe I should patent this?


    Bookmark   May 25, 2007 at 1:50AM
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Interesting idea. I'm not sure the infrared beam is strong enough to travel that far. The difficult part will be aligning the mirrors. If you decide to try it I hope you will let us know how you make out.

    Bookmark   May 25, 2007 at 4:28PM
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