[Cialug] Raspberry Pi 3

[L. V. Lammert]

On Mon, 29 Feb 2016, Justin Richeson wrote:

> 2 wires run to the "button" in the garage, but somehow it controls a
> lock function, the light, and the door.
>
It is a digital signal, .. if you hooked an oscilloscope to it, you would
see a series of pulses for each function.

Pretty hard to replace with a button, *BUT* most openers will respond to a
simple switch closure across the wires as that is an option if you can't
use the fancy control module.

It's low voltage, so a simple test would be to disconnect the wires from
the controller on the wall and touch them together. Good chance it will
function, so you just have to provide a relay closure across the wires
from your Pi.

	Lee