Ok, got my limits fabbed.
I bought two 3/8" ID collars and three 3/8" ID X 1-5/8" OD fender washers. (Only used 2 of the washers.)
I drilled a hole through each collar and through the fender washer.
I then attached the washer to the collar with a small bolt and nut.
I then ground off nearly half of each washer.
After this picture, I had to grind some off the head of the bolt and the nut to clear the 3/8" shaft.
This was very tricky and I dont think I did a pretty job, but it works.
If you do this, I highly suggest you use a drill press, I couldnt imagine doing it on a hand drill. Welding the washer to the collar would be a lot easier, but I dont have a welder.
I then mounted my limit switches, one on opposite ends of the shaft.
Here is one:
And the other:
The switches are wired to normally open contact. The washer holds the limit switch closed until the ground off part rotates around, then the switch opens.
I can easily adjust stopping points by loosening the bolt in the collar and turning the collar a bit.
Works very good.
(Somebody needs to pitch me a fish!)
Got the relay drive mounted:
And the motor wired in:
Sorry about the quality of the pics, I think the batteries were going down in the cam.
I hooked this to my desktop PC and it works great!
I have a video made, I will try to upload to youtube and post later.
Now I need to tidy up my wiring, need to fasten motor and limit switch wires to the 2X4's. Will probably use staples.
I also need to ground the actuator frame and maybe the shaft, although it is grounded to the monitor, so that may not be necessary.
Edit: Removed double post of a pic.