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Started By
Message
Engineeers of OB, let me pick your brain.
Posted on 6/8/14 at 1:54 pm
Posted on 6/8/14 at 1:54 pm
I need to build a device that is photocell triggered and 12 v battery operated to move a relatively light object (metal door) vertically down 10 to 12" and lock in that position until the photocell again triggers retracting the item to its original position and holding it there.
much like a garage door but on the scale of about 12" by 48" by 1/8" thick aluminum.
And I need to do so as cheaply as possible.
much like a garage door but on the scale of about 12" by 48" by 1/8" thick aluminum.
And I need to do so as cheaply as possible.
This post was edited on 6/8/14 at 2:01 pm
7
Posted on 6/8/14 at 1:55 pm to Bleeding purple
Starting with a blank slate huh? 
Posted on 6/8/14 at 1:57 pm to Bleeding purple
quote:This engineer says YES.
(No message)
Posted on 6/8/14 at 2:04 pm to Bleeding purple
Only want those hogs feeding during daylight hours?
Never mind just looked at the size again...
Never mind just looked at the size again...
This post was edited on 6/8/14 at 2:05 pm
Posted on 6/8/14 at 2:36 pm to Bleeding purple
Ok, how fast does it need to be?
I would used 24vdc as it easer to get parts for. Used 2 12vdc batterys with solar charger and a photo cell to open.
Heavy Duty 16" Linear Actuator Stroke 12 Volt DC 200 Pound Max Lift
LINK
I would used 24vdc as it easer to get parts for. Used 2 12vdc batterys with solar charger and a photo cell to open.
Heavy Duty 16" Linear Actuator Stroke 12 Volt DC 200 Pound Max Lift
LINK
Posted on 6/8/14 at 3:29 pm to Bleeding purple
Just thinking it through: You need a photocell relay with dry contacts that are capable of making/breaking on the full load amps of the motor. The photocell probably needs a separate power circuit (which can be from the same power source). Wire the motor up through the photocell relay contacts. It needs to have have a separate "up" and "down" start circuit with self contained motor starter. Use the normally closed contact on the "up" start circuit and the normally open contact on the "down" circuit.
Eta: you will probably need to specify the photocell come with normally open and closed contacts (some may only come with normally open contacts). Or you could use some inter posing relays to get around this.
Eta: you will probably need to specify the photocell come with normally open and closed contacts (some may only come with normally open contacts). Or you could use some inter posing relays to get around this.
This post was edited on 6/8/14 at 3:34 pm
Posted on 6/8/14 at 3:45 pm to Bleeding purple
As far as hooking the motor up to the door, you need a mechanical engineer for that shite.
Eta: Oops if the motor is 24vdc you'll power the motor itself (open & close), not a coil.
This post was edited on 6/8/14 at 3:47 pm
Posted on 6/8/14 at 7:21 pm to Bleeding purple
quote:
And I need to do so as cheaply as possible.
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