Hi,
Watching with interest.
Fluence,
I am not sure about the timer thing.
What if the shutters have reached the end before the timer cuts it off.
Will it jam up?
Is there a friction drive?
I think limit switches would be more suitable.
However the arrangement suggested by 'Kinarfi' looks Ok,
and the three wire for swithing,
is similar to how i was thinking,
but not the same.
I was thinking of four wires,
one for up,
one for down,
one for stop,
and one for common.
I still think that limit switches would be the way to go.
I cant see that any timer is going to get it right.
Maybe just close is good enough,
and a person can pull the shutter the last bit,
to fasten it ?
Like that a timer might be Ok.
Regards, John