Originally Posted by HDGTX
.... Where does the IR sensor plug in ? Those limit swt inputs may come in handy sensing the limits of mask travel.
John, The IR sensor is actually in a separate box. This antenna rotor is designed to have the receiver in the house by the television so there is a set-top box that has the IR sensor and positioning hardware built in. The only cable going to the motor housing is a single coax. Here is a copy of the picture from the SolidSignal.TV
I probably will place the set-top receiver behind my false wall. I actually am thinking of buying three of these motors if I can get the gearing to work -- One for each side mask (although I could probably make a single one work), and one for my horizontal masking. I will put all three set-top boxes behind the false wall and hook them up to my Xantech IR control system and universal remote. I will program 5 locations on each receiver box:
Position "01" = the masking position for needed for 4:3
Position "02" = the masking position for needed for 16:9
Position "03" = the masking position for needed for 1.85:1
Position "04" = the masking position for needed for 2.35:1
Position "05" = the masking position for needed for 2.40:1
Then I can select a location and each receiver will send the information to its motor to move the masking to the proper location.
One drawback that I see when using multiple motors is that since all receivers respond to the same signal, if I press the IR remote button to manually move a motor, all three will respond. The only way to get a single motor to respond would be to turn off the receiver boxes for the other two motors. I think this is a rather minor issue though because once I program the locations for the pre-set masking ratios, I don't think I will need to make manual adjustments.
As for the limit switches, I have thought that it would be fairly easy to extend the wires and place the switches at the end points on my masking system. That way if something went wrong and the motors ran for too long, they would stop when the masking reached the end of its physical limit. (If I get the gearing all figured out, then I will look into the limit switch options when I actually install the motors.)