Greetings - I am looking for advice on an appropriate circuit to use for this project.
To control my garage door, it occurred to me that rather than hooking a relay up to 24 volts to activate the opener as if it were another wired button on the garage wall, I could just open the case to my wireless remote control and close the circuit as if the button on the wireless remote had been pressed. The wireless remote has a single 3.3v coin-cell battery in it, and a multimeter across the button terminals shows 3.3 volts, so it is a 3.3 volt device. I soldered two wires to the opposite sides of the button, and by touching those wires together, or "short-circuiting the button", the garage door does activate. I'd like to now connect those wires to pins on the Arduino (3.3v device, of course) to be able to control the door activation with programming on the Arduino.
If there is a simple way to "short circuit the button" by connecting the 2 wires to pins and setting one high and one low or something like that, that would be great, but that just doesn't feel like it would work (haven't tried it). Alternatively, I have tried using a 2222 transistor with the Arduino pin attached to the base and the two wires from the remote to the collector and emitter, but no consistent success there either.
Is this project idea feasible? How would I set up this circuit? Thanks...