I just did this using @vseven and @ogiewon’s ST_Anything code running on an WeMos D1 Mini ESP-8266 board.
I have a 2-bay garage with separate doors and I used the WeMos and a 2-relay board to control both doors.
WeMos D1 Mini: https://wiki.wemos.cc/products:d1:d1_mini (can find on eBay for < $5 or Aliexpress for <$4)
I used a two-relay board like this one: http://a.co/9j2iHZD.
It was amazingly simple - just use the “doorcontrol” type and you’re good to go.
@sdubb - it’s essentially the same thing as the board you linked, but there’s only only one relay on that board. You could still use it, just hook up a second relay if you need two.