A Raspberry Pi LiftMaster garage door opener/closer plugin for Homebridge using GPIO pins. Designed for a simple hardware setup without any feedback. Supports opening/closing states via a time estimate, and stopping the door while opening and closing.
Add a transistor that shorts the opener push button wire to ground on the LiftMaster box when you send a logic high to the gate (doorPin in config.json). See sample config.json for configuration.