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This project uses an ESP2866 with nodeMCU firmware to control a garage door.
Controlling a garage door from a microcontroller is easy. All you need to do is emulate a push button with a relay and wire it in parallel with the real push button on your garage door motor.
I bought a kit from eBay that came with most of what I needed:
Separately, I bought 2 relays that can handle way more voltage and current than I need, but are handy because I can drive them with 3.3V logic of the ESP2866.