That is soooooooo awesome! Nice work.
I don't have a garage though - but I hate my "remote"! I live in a high-rise building so I have a "Gated Entry" - the remote works on the parking meter to get in and out (where people stop to pay) and then I go underground and the remote also works on the secured gated parking area for homeowners... I have a remote the HOA gave me.
Think I could do this too???
(And your vent is pretty dusty - you should get that spiffed up! hehehe