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GarageMote from Felix Rusu:

GarageMote is a garage door controller shield that can be used to remotely control a garage door from anywhere on the web.

GarageMote was created for several reasons. Mainly because as I’m adding more Moteino based home automation devices around my property, one of the nice things I wanted to be able to do is control the garage door remotely. It’s become so routine to close the garage door when I leave from home that sometimes when I’m already 5 or 10 minutes away I wonder if I actually closed it. And so I want to be able to check the door status and close it if it was left open by mistake, without having to drive back home. Or maybe it’s useful to be able to let someone in without giving them the garage code every time.

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The hardware is very simple, the shield has a small relay, a diode, 2 resistors. The 8 pin header has connections for 2 hall effect sensors and the door opener. I used a female header to connect an 8 wire cable to the two sensors. One sensor is for the open position one is for the closed position. That way you can tell whether the door is open, closed, or stuck somewhere in between. The other two wires are a contact closure driven by the small relay to trigger a door action, and are connected directly to the garage opener. This is equivalent to operating the garage from the regular door opener, and thus GarageMote does not interfere with the normal garage door operation.

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