esphome-ratgdo VS secplus

ratgdo looks really nice! I've been controlling my garage door via dry contact on my Elk security system [1] and monitoring the door status via a separate rolling door reed sensor. [2] But from following the ratgdo link, I learned that my "Security+ 1.0" garage door opener has a RS-232 interface with a protocol that will tell you about door status and obstructions. That's better!

I just clicked the buy link on the ratgdo thing to support the nice, well-documented open-source [3] project. In truth though I have the right hardware sitting around here already, so I might just use that depending on how long the "back ordered" status lasts...

[1] There's a Home Assistant integration for the Elk M1 Gold with some Python library; I also have my own WIP Rust library for interacting with it here: <https://github.com/scottlamb/elkm1>

[2] something like this one: https://www.amazon.com/Gebildet-Security-Rolling-Magnetic-Ap...

[3] docs at <https://paulwieland.github.io/ratgdo/> but the actual code is in a separate repo at <https://github.com/ratgdo/esphome-ratgdo>

For Chamberlain brands [0] there is some research that shows that their rolling code system (Security+ and Security+ 2.0) is quite easy to decode/decrypt [1]. This feature is supported in the flipper firmware, but is restricted (you can't create a custom remote, only clone is supported) without custom firmware. However, I'm sure you could decode a raw capture file if needed in a pinch.

[0] https://chamberlaingroup.com/our-brands

[1] https://github.com/argilo/secplus

A gentle reminder that the Security+ and Security+ 2.0 RF protocols have been reverse engineered (https://github.com/argilo/secplus). While they are not the most secure thing in the world, you can build a custom RF transmitter (remote) that is network connected.

Having done some research into Chamberlain's products, I don't recommend anyone to use them if they have the choice.

This is not an attempt to break the RF Security+ encryption that this, and other garage doors utilize. That has already happened. https://github.com/argilo/secplus

Here is the rolling code project: https://github.com/argilo/secplus