Putting the hydrolics in the mid section of each door as they hang at the side of the frame would allow you to have a flat wall design and side pressure to seal the door. The rubber seal should be in the tooth design he chose as it would hide it when closed.. A pulley system with one ac driven motor would work as well.
I have a piston(100 mm stroke) , Relay, Selonid , photo cell & Arduino (now i want to control the piston movement to move 25 mm only not the whole 100 mm stroke after seeing the object by photocell , is that applicable by Arduino?
Just a guess, but I'll bet those doors have to be pretty light weight, if you want them to move at standard Trek speed. Otherwise the inertia might be a problem..
Yep, that's what I was thinking too. Plus, it would be nice for the doors to be insulated, as they will go between a heated and unheated space. I was thinking of something like building custom doors from 1/8" paneling over 3/4" foam. Should be relatively light.
You can get pneumatic cylinders to move anything. Lighter is better, of course, if speed is your thing. But with air cylinders it's all about how much air you want to use to push with. More pressure and larger cylinders will let you move even bank vault doors.
dlwatib One thing I've already learned is to make sure to set the pressure regulator BEFORE you start playing with air cylinders. It's possible to shoot these things so fast that they destroy themselves.
BenjaminNelson 3/4" foam with a thin hard coating on the outside to protect it from denting etc.?. Maybe 1" aluminum 'U' channel from Ace Hardware would work for a frame.?. Put some soft rubber or foam stick-on on the half-door edges, to prevent them from banging when closing, and of course slowing air leakage. How are you going to hang the door segments? Maybe rods top and bottom? So they can't fly off. LOL!
+BenjaminNelson Hi, I am really interested in the circuit you have made in this tutorial. Would you be able to give me some more guidance on the type of relay air valve that you purchased, ie size or manufacturer. Also can you specify the two types of battery and why you need two? I am a complete novice and would really appreciate the advice as this is going towards my university degree. Thanks
Hi!! i'm currently working on a project and we are having trouble figuring out the code for a pneumatic arm. Where can i find the code that works exactly like yours? much appreciated!
+Shao Wen I am a total newbie when it comes to Arduino. All I've done was get an Arduino kit which included a board and a small tutorial book. The tutorials cover simple steps of the various inputs and outputs. I just tried learning by doing the tutorials, and then modifying a tutorial in a way that would work for my project. For example, the book had a tutorial where a light sensor would turn an LED on and off. I modified the tutorial to that instead of the LED, the Arduino would instead send a signal to the relay air valve. So, the light sensor then activates the air cylinder instead of an LED. For me, and lots of other people, imitation and modification is a great way to learn!
The air cylinder was $25 at a surplus store, although they can be bought from e-Bay or mechanical suppliers like www.mcmaster.com. The valve was mail-ordered from Amazon. This is all pretty much standard components used for things like building factory machines. It's common materials, but maybe not stuff the average consumer works with every day. I'm just learning as I go with these types of materials. The best source of information I've found so far about learning about pneumatic cylinders is from various DIY Halloween Prop forums.
Air cylinders like this are available from industrial supply stores, such as Grainger. Popular brands include Parker and Bimba. I purchased this air cylinder at a scientific and surplus store. Air cylinders are available in a range of sizes, styles, and prices. If you need a different stroke length, a lever or gearing could be attached to the end of the rod to change direction, speed, or distance of the power created by the air cylinder.
