Feedback wanted: Using a Shelly 1 to interact with my old Genie Screwdrive garage door opener

[hartzell]

[edit: removed status LED config (left over from t: 40 example)]
I'm new here and would like to ask for a bit of feedback on my plans to automate my old-ish Genie Screwdrive garage door opener.

I would like to be able, remotely, to know if the door is closed and to be able to open/close it.

I currently have a remote opener that works and there's a doorbell-style button on the wall that will also operate it.

My plan is to use a Shelly 1 and a wired reed-switch.

I'll position the reed switch so that it is closed when the door is closed.

I'll wire it up as shown in the Shell 1 basic wiring diagram, with:

• the reed switch hooked to the SW terminal; and
• the relay hooked to the 0 and 1 terminals and connected to the same terminals on the opener that the doorbell switch are connected to.

The idea is:

• that, for any of the 0, 1, 2, 3 actions, the Shelly 1 will briefly "push the button"; and
• that the reed switch will provide concrete evidence that the door is closed.

I think that the following captures my intent.

// Use a Shelly 1 as a simple interface to my Genie garage door opener.
// Uses the relay (GPIO 4) to the close the physical button switch.
// Assumes a reed switch is connected to GPIO 5 and positioned so that
// it's closed when the garage door is closed.
// See also: Shelly 1 entry in devices database
{
    "c": {
        "io": [
            [ [ 4 ], 2 ],
            [ [ 5 ], 6, 0, 1 ]
        ]
    },
    "a": [
        {
            "t": 40,
            "0": { "r": [ [ 4, 1, 0.5 ] ] },
            "1": { "a": 0 },
            "2": { "a": 0 },
            "3": { "a": 0 },
            "f2": [ [ 5, 0 ] ],
            "f3": [ [ 5, 1 ] ]
        }
    ]
}

I haven't figured out a way to remotely enter setup mode.

I'd love feedback about whether this will do what I intend and/or if there's a better way to achieve the same goal.

Thank you!

[hartzell]

Thinking about how to handle entering setup mode, the Shelly 1 exposes GPIO 0 on the set of headers. I know that holding GPIO 0 low on reset (power up) will enter boot-loader mode, that's how I install Tasmota/HAA.

Is it safe to use GPIO 0 as a general purpose button? If so, I could just use it as a button to enter setup.

For that matter, I could use TX or DX, which seem to be GPIO 1 and 3.

But, just found the docs, whcih mention that "⚠CAUTION! High voltage on the add-on interface when the Device is powered!", so this suddenly seems like a bad idea....

[hartzell]

Apologies, continuing my monologue...

I think that doing this with a Shelly Plus 1, which comes with a button attached to GPIO 25 that can be used for entering setup mode while I'm using the other GPIO to track the garage door state should work.

That leaves me with the original questions:

• is the config for the 0,1,2,3 actions, which just emulates pushing the mechanical doorbell button, something reasonable to do from the homekit side?
• is tracking the open/closed state of the door with a separate reed switch something that will work well with the homekit side?

See the Shelly Plus 1 "Switch with external toggle, and internal temperature monitoring from HAA Manager" entry in the devices database.