Topic: Automating a window shade for a projector screen. (Read 16550 times)

dave w · « **Reply #15 on:** April 25, 2006, 12:42:43 PM »

Quote from: roger1818 on April 13, 2006, 01:09:20 PM

Quote from: bigbear1969 on April 12, 2006, 06:41:38 PM
I have a spring retractor, so, I'll to fabricate the motor to screen connection.

I would be tempted to not use the spring retractor and twist the retractor mechanism with the rod. Trying to disable the clutch to allow it to retract could be tricky.

Quote from: dave w on April 13, 2006, 12:45:20 PM
I use two appliance modules for each drape motor("Graber brand).

Why not have a universal module (or appliance module) control a DPDT relay that turns the motor on in the correct direction and have the limit switches turn the motor off.

Roger - yeah, Universal module and DPDT relay will do the job also. I just used two Appliance modules only because the "Grabber" drape motor forward and reverse windings are 120V and I utilized the Grabber limit switches. So appliance modules worked well with little other "plumbing".

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Author Topic: Automating a window shade for a projector screen. (Read 16550 times)

dave w

Re: Automating a window shade for a projector screen.