Automated Gate

The Gears · Post by **The Gears** » Sat Jul 19, 2008 2:57 pm

Thanks to SgtWookie for the plan to operate a set of crossing gates for a model railway.
I appllied the plan to open the drive way gate when the light on the automatic garage door goes on and close when the light off. This gave me a push button control from the car.

The sytem is 24 volts supplied from an old 30 volt transformer, added a 4 diod bridge for DC and a 2 x 4 relay to handle the limit switch logic.
The rely coil is 120 volts.

The is a switch on the transformer 120 V supply to isolate the system from the garage door.

Spent about $150.00 for the surplus parts for the gate wheel and drive and 70.00 for 200' of 3 pair cable from the garage to thr gate.

The gate supplier wanted about 2K for his system installed.

seal killer · Post by **seal killer** » Sat Jul 19, 2008 4:23 pm

The Gears--

Gotta picture of the gate?

--seal killer

The Gears · Post by **The Gears** » Wed Jul 23, 2008 2:42 am

Hi seal killer. Here is a pic of the gate drive. All the parts are surplus

seal killer · Post by **seal killer** » Wed Jul 23, 2008 8:28 am

The Gears--

Sweet and simple! 2 kewl.

Windshield wiper motors?

--Bill

Jose Rivera · Post by **Jose Rivera** » Wed Jul 23, 2008 12:06 pm

The Gears ... that is brilliant !!

The typical design with the long chain or cable becomes obsolete.

Some idiot proofing so no one gets hurt ?

Is this you design?

The Gears · Post by **The Gears** » Thu Jul 24, 2008 1:33 am

I guess any low voltage geared motor will work. The picture does not show it but there is a sealed ball bearing between the drive output and the chain drive. Pressed into a machined ring tack welded on the left side of the plate is the bearing. I am in the process of building a metal cover for weather protection and to keep the fingers and junk out of the chian.

Having AutoCAD to do the design and work bugs out is very helpfull. I was able to completly build it on screen then rotate and view from any prospective. That is as much fun as the building.

I have had lost of fun building this thing for cheap and showing it off to the guys on the street.

I will have to remember to open the gate when snow is forcasted, or mount a snow tire for the winter.