@boyoh - thats an interesting idea, i'll look at that more, thanks @4LULZ - Its a PMX500IC, but the front page of that guide says it supports Series II controllers (which is what my wall controller is) Im not sure how you can tell its based on being open/close from that, but I did just test it with ...

@mattmiller - I guess i dont understand the difference between triggering the 'cause' is any different than simulating the effect? I guess the risk is that i incorrectly simulate the effect and I think thats a fair statement and agree with you there, but with something this simple i wasnt as worried...

I dont think that im expecting "one answer", or rather, maybe i do, but i dont have any preconception of what that answer should be. the question is a much more high level one than what you guys are assuming. It is everyone else that is looking to provide one answer, the answer to how they would sol...

the buttons are not 'open' and 'close', the are 'change door state' and 'turn on light' button 1 - Open/Hold/Close (depends on state of door) button 2 - Turn on light tap button 1 > open door tap button 1 (while opening) > hold door in current position tap button 1 (when completed opening, or in hol...

May I ask for some clarification? you mention two buttons - the door button and the light button - and a controller and a garage door. You also say it changes between 1v, 2v, & 3v What is the "it" that changes? Is "it" a point on the controller where the buttons connect, or a point elsewhere? And w...

Ok so im attempting to make a diagram for the switch now that i've taken it apart, and what i've learned is i have a lot to learn :) here is a pick of the controller. the image of the back is flipped so left is left on both pics. Im still pretty confident that this is handling the events based on vo...

Im not sure how a relay would work here. A relay is just a switch (on/off) where what i need here is voltage control. To make this a tad easier, im going to use round voltages, but because i measured at the wall unit the distances causes a voltage drop, so im sure it will take some testing and screw...

I'll try to gather more info/pictures and some circuit diagram. The reason Im using a Pi rather than Arduino is that it will be easier for me to program it as a "device" with in Domoticz (my home automation system) which I can make handle the "fail to safe". Thats sort of the whole reason for this. ...

Im looking to help automate my garage door and from what I can tell, it sits at 3.8V normally, but when the door button is pushed, it changes to 1-1.5V and when the light button is pushed it changes to 2v. Is there a way I can use a GPIO pin to normally allow that to pass as is (let the physical but...