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View Full Version : Wired Garaged Door opener to alarm brain



the727kid
03-03-2013, 12:50 PM
Pretty basic mod I have been wanting to do for a while. I always leave my car in the garage and if someone picks me up or my girlfriend drives, I have to bring a house key, which I hate doing. I usually just bring my car keys, so being able to to open my garage door with my alarm FOB is very convenient for me.

I will assume this is different for every garage door opener but this is how mine was. I took it apart to first see how it worked. I quickly realized that when I pressed the button all it did was connect to circuits on the motherboard.
http://i74.photobucket.com/albums/i269/the727kid/DSC03888_zps671d6270.jpg
http://i74.photobucket.com/albums/i269/the727kid/DSC03889_zpsb42618c0.jpg
Once I realized this I immediately knew what to do. I just needed a relay triggered by an auxiliary output on my alarm.

First step was to "carefully" solder on wires to each of the connecting points.
http://i74.photobucket.com/albums/i269/the727kid/DSC03892_zpse7919b7c.jpg
http://i74.photobucket.com/albums/i269/the727kid/DSC03893_zpsceb7dd9c.jpg
Next was to wire up the relay. The wires coming from the opener go to points 30 and 87 on the relay. Then 85 goes to a constant 12v source (easy to tap from alarm brain). And 86 to the auxiliary channel of your choice on the brain. I choose channel 4 because on my remote I can change it to say "Garage Door" Instead of channel four.
http://i74.photobucket.com/albums/i269/the727kid/IMG_20130301_175052_zps7b8572dd.jpg

To test it, just trigger your aux channel and see if the light comes on the opener. It works perfectly for me.

The only issue right now is I will have to take it out to replace the battery. When I get a little bit more free time I will fix this issue by wiring up a 12v source with resistors to match the voltage output of the battery inside the opener.

jteske88
03-03-2013, 12:59 PM
Pretty nice man, I just went and took a homelink out of a lac and put it in.

the727kid
03-03-2013, 01:01 PM
Nice, I am assuming it could be done with pretty much anything that opens the garage door. Way better than the crappy overpriced DEI module.