Garage door openers are usually made up of a single button. If you want something more high tech, Instructables user MegunoLink shows off how to build a garage door opener you can control with your smartphone.
MegunoLink’s build uses a network capable Arduino, a relay board, a few cables and wires, and a power supply. From there, you’ll just compile the code onto the Arduino, and you can then access your garage door from anywhere. The end result is a system that gets you to enter a password into your phone that opens the garage door. Head over to Instructables for the full guide.
Arduino WiFi Garage Door Opener [Instructables]
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