Garage door control and monitoring

[Marc Assin]

Hi Goahead,

Nice to have you back :-)

I intend also to automate a garage door in the near future.
But in my case it is a farm door (H=3,5m), I'll use the trick
mentionned by mickg to open the door only for a height of 2m (normal
car & person).

An easy way would be with reed switches, (maybe several switches if
you need to know the intermediate position) along the door travelling
pathway.

So, as mentionned above, a binary input device, with 4 inputs would be
more than enough.

Caution: the max recommended length of cable for a binary input = 5m.
So, it would be clever to position the binay input device somehere in
the middle of the door travel, in such a way to not to exceed the max
length.