ratgdo: local Wi-Fi control for Chamberlain and LiftMaster garage doors
A small control board that wires to your garage door opener and gives local ESPHome, HomeKit or MQTT control, including Security+ 2.0 openers.
Photos
Photos: Paul Wieland
Key Facts
- Openers: Chamberlain/LiftMaster Security+ 1.0 and 2.0, dry contact
- Firmware: ESPHome, HomeKit or MQTT
- Local only: no cloud, no subscription
- Status: real door state, obstruction, light, motion (Sec+ 2.0)
About This Project
ratgdo is a Wi-Fi control board that wires to the terminals of a residential garage door opener and works over your local network using ESPHome, HomeKit or MQTT. Chamberlain and LiftMaster Security+ 2.0 openers use an obfuscated serial signal, so ordinary dry-contact relays like a Shelly can't drive them; ratgdo speaks that protocol and reports the door's real state (closed, opening, open, closing). On yellow-learn-button Security+ 2.0 openers it also exposes the obstruction sensors, light, wireless lockout and motion sensing. Version 2.5 added Security+ 1.0 and plain dry-contact openers, with status feedback from two reed switches. There is no cloud and no subscription, and the firmware is open source. The project sells a ready-made board with an installation kit; the parts list below is a generic starting point for experimenting with a similar ESP-based controller.
Source & Attribution
Available as a complete kit
Ready-made ratgdo board plus wiring kit for your opener
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