- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
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 2:02 pm to DonChowder
itchy trigger finger.
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 2:20 pm to wickowick
building two high capacity protein free choice feeders for deer that I want to be able to shut at night to force them to feed during the day.
Posted on 6/8/14 at 2:23 pm to Bleeding purple
Could you just hook up a timer instead of photocell?
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 3:50 pm to gorillacoco
It would be easier to used timers one to open and one to close. Photo cells don't work as well in cloudy weather.
Posted on 6/8/14 at 4:08 pm to hogdaddy
I fricking hate everything about EE. Gimme a crescent wrench and a snaggle toothed girl and this dude will build you a bridge to the moon
Gimme a capacitor and two AA batteries and I'll fry the power grid for the entire southeastern US
Gimme a capacitor and two AA batteries and I'll fry the power grid for the entire southeastern US
This post was edited on 6/8/14 at 4:14 pm
Posted on 6/8/14 at 4:20 pm to Hammertime
Posted on 6/8/14 at 4:33 pm to Hammertime
quote:Me too. Got a D in my circuits course.
I fricking hate everything about EE.
Sorry BP, I can help you if you wanna drill a well but this kinda thing needs a smart person.
Posted on 6/8/14 at 5:03 pm to DonChowder
Posted on 6/8/14 at 6:11 pm to hogdaddy
quote:
Ok, how fast does it need to be?
It would actually be better to be slow.
I probably would not be moving more than 5 lbs max. I don't think I will need an actuator quite so large or expensive. Actuator will be weather protected also.
timers would be better than photocell for some reasons but you would have to reset for daylight savings but overall probably better with timers.
Posted on 6/8/14 at 6:51 pm to Bleeding purple
quote:
overall probably better with timers.
I agree with this. Yeah those motors looked bigger than necessary to me too but idk what to type into the search to get what you're looking for. Maybe a solenoid?
Posted on 6/8/14 at 6:54 pm to gorillacoco
Posted on 6/8/14 at 7:07 pm to Bleeding purple
We could used a smart relay that has daylight saving time built in. Like IDEC LINK
Used a Power Window with a arm for the gate.
Used a Power Window with a arm for the gate.
Posted on 6/8/14 at 7:08 pm to Hammertime
quote:
I fricking hate everything about EE. Gimme a crescent wrench and a snaggle toothed girl and this dude will build you a bridge to the moon
Gimme a capacitor and two AA batteries and I'll fry the power grid for the entire southeastern US
This. My circuits course was the only time I've ever contemplated suicide
Page 1 of 2
Popular
Back to top
Follow TigerDroppings for LSU Football News