xEM access controller for garage door question

This is awesome. I haven’t gotten to work on this project cause I’m not leaving my house and trying not to order anything not necessary. Now someone else was able to use the post to get the same project done and I can ask him when I get stuck cause his set up looks like what I am gonna need to do.

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Ah, yes. The student has become the master.

Just a thought for @Steven1727
Get some paper and diagram the whole wiring mess. Going through the process to commit it to paper will really improve your understanding of just what’s going on. It sounds stupid, but trust me it works.

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Not only will I do that but I will post it on here as well so everyone knows that they have the same problem

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Also in 5 years time when you need to adjust / fix / change out, you will have a good record to access and remind yourself

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Okay y’all… Been working nights and finally in a routine now and was able to draw out the schematic. Don’t laugh too hard but crayons are all I had :rofl: … And just realized I forgot to draw in the damn diode :man_facepalming:

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Can someone run through the two relay system again? I understand that the first relay is allowing the signal wire to switch the full 12V through to the second but why does he need a second relay? Why can’t switching 86 and 87 of the door be done in a single relay? Thanks

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It was either a second relay or do a momentary switch. I had a second relay in my toolbox so made that work. For some reason my garage door controller is crazy technical and could not have a normal button. The button has a circuit board with two data wires coming out of it. By soldering the two wires to the button and connecting them to 86 and 87 of the second relay it tricks the circuit board to thinking that the button is being pressed and released.

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the output of relay 1 is used to switch relay 2 which jumps the switch.

If you used a small (sugar cube relay) you could probably have the xAC just drive that

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I guess my question is why couldn’t you bypass the first relay? They share a ground, keep 86 and 87 the same and put the signal from the xAC directly to 30 of the second relay.

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Read my comment :wink:

Thanks

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I still completely don’t understand the point of the 2nd relay XD

It looks to me like the circuit as @Steven1727 drew it is dumping 12v into the button which seems like a terrible idea to me, since it’s doubtful something that tiny is running much more than 5V, but would probably still make the door open.

I’m not sure why you wouldn’t take xEM AC signal to a diode with the white stripe side to 86 Coil Control, tie 85 coil ground to xEM AC ground and then throw the two sides of the button on NO and common 30 and 87.

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When @ODaily and @Compgeek were helping me trouble shoot it that night we couldn’t get it to work that way… Something with the data wires… Then we figured out the data wires issue and we came to the conclusion that I needed to solder some wires to the button. A friend of mine came over a few days later and helped me solder the wires. When that happened and we hooked it up that way it did not work. The relay would not even click. After trying for literally about 3 hours this was the only thing we could get to work.

Right the 12v output of the xAC isn’t particularly useful to use, you drive the first relay using that to drive a higher power relay.

I personally though that the reason for 2 was to not put too much load on the output of the xAC.

Both of the circuits I’ve drawn are functionally identical.

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After looking at it, drawing it and then thinking way too hard, I’ve determined it has to be wired how you drew it @Devilclarke since how @Steven1727 drew it would just be dumping 12v directly to an open button and wouldn’t actually do anything.

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Okay… My bad I just went outside to take a picture to “prove y’all wrong”. BUT I proved myself wrong lol my dyslexic ass flipped the posts and numbers lmao… The garage door wires are connected to 87 and 30 on the second relay. :man_facepalming:

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Phew, that makes infinitely more sense, I was starting to doubt physics for a minute XD

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dyslexia is my reason for drawing shit!

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It helps when you don’t flip your wires :rofl:

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did you run out of crayon colours :wink:

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