Register to reply

How Could I do This? Motor to open and close doors on a timer?

by atl944
Tags: doors, motor, timer
Share this thread:
Nov17-09, 08:27 AM
P: 1
Hey Guys,

First post here, and I am picking my brain on how I could accomplish this. Here's what I have.

Wow...Sucky computer drawing. That is a 8' x 3' piece of plywood and the small square are little doors that are on a track to slide up. I have a dowel with wire connected to each door that runs the width of the top of the plywood, with some wire wrapped around that. So in essence, when I unwind the wire the doors slide open.

Now, this is for ventilation purposes (there is going to be a fan blowing into the center square) and I am not always home...So I was wondering if there was a way for me to use this with a pulley system or an electric winch type system that would allow me to set a timer of some sort to open the doors at say 10:00 A.M and close them at 10:00 P.M...

Is this even possible?

Thanks in advance.

Phys.Org News Partner Engineering news on
California quake points to research advancements in retrofitting older buildings
Greater safety and security at Europe's train stations
Fingerprints for freight items
Nov17-09, 01:22 PM
P: 40
There must be a hundred ways that are cheap and trivial.
You can get as elaborate as you'd like, too- incorporating temperature or humidity sensing can also be done cheap and dirty.

At the extreme low end: battery powered clock guts which are sold for making clocks, with 2 contacts installed in the plastic face that get wiped by the hour hand can send the signal to switch a motor winding all 5 wires. A flipflop sets direction of the motor and a contact on each end of travel signals to cut power.

You can get various kinds of timers from a home depot made for switching sprinklers or appliances at slightly higher expense and less hacking fun.
Nov17-09, 02:03 PM
Sci Advisor
PF Gold
Mech_Engineer's Avatar
P: 2,248
There are definitely many ways you could do this. I would first do some looking around to see if you could utilize something like a sprinkler timer and some simple motors to do the job. If not, then you can get more elaborate; it will only be limited by your budget.

Keep in mind there are probably off-the shelf fans that would also fit the bill for you, they run a timers and could just be paired with a set of louvers that open when the fan(s) are on.

Register to reply

Related Discussions
Close loop Motor Question Electrical Engineering 0
Pole and Barn paradox - close the doors for good! Special & General Relativity 4
555 Timer to control motor? Electrical Engineering 2
Wooden Screen Doors vs. Aluminum Doors General Discussion 6