Originally Posted by Don Bond
The controller would have to have discrete inputs for the switches, otherwise it will get confused about who's who. Also, it would be better to use magnetic proximity switches (no direct contact).
Personally, I don't see how you would be able to retro-fit an existing curtain controller.
Thanks for your input. You may have missed my point that the curtain track would stop at each AR point because each snap switch would momentarily trigger the "stop" function. No need to know "who is who" in this approach.
A concern might be with my approach; is there a momentary type of snap action swt (so as to copy the function of pushing the "stop" button)?
Yes, to be able to push a seperate button on a rmt & have the motor drive the mask panels to any AR position from any other position would be ideal. The "PowerCurtain" track's rmt ctl & wall panel only offers; full open, full close & stop for an "A" & "B" track.
As for use of mag prox switch, someone mentioned they have a width of operation when a magnetic approached from either side (not sure how wide that is). If it's an inch or so, may not matter.
Had thought about using photo interrupter swts as AR point sensors. While no physical contact would occur between the master carrier's arm & the swt, that arm would have to travel with very little movement so it would stay within the swt's groove.
The ideal approach would be to use a DC motor with built in encoder coupled with a motor driver board & microprocessor board that can receive commands from a rmt ctl device. That was the beauty of Scott's approach with an off the shelf antenna rotator, just needed adapting to drive a masking setup. While that proved difficult, that story is not over yet, stay tuned...
Thanks for the input.