View Full Version : Air Cylinder,compressor,soleinoids,relay
Hey, i really and truly need massive help with this programming.......i have been on this for at least three weeks trying to figure out how to program this air compressor and air seinolds, I've been trying to find someone with the right LabVIEW Functions that shows me exactly how to control the air cylinder,compressor,solenoids,relay: the proper steps on how to program each of the 4 subVI'S that were listed
I would start here:
http://www.ni.com/pdf/manuals/372668d.pdf
This is a LabVIEW guide for FIRST robotics (a little old but mostly still good). Chapter 38 will cover solenoids etc.
You can also go to Help>Find Examples and you will find a couple of relevant examples.
If you have specific questions we can answer them.
Worst case come find me during Bayou on Thursday and I'd be happy to help I will be around one of teams 1304,4805, or 4113.
thanks n i would really to be there but my team and i aren't goin to the Bayou regional this week we are going to the regional in Arkansas
Hey, i really and truly need massive help with this programming.......i have been on this for at least three weeks trying to figure out how to program this air compressor and air seinolds, I've been trying to find someone with the right LabVIEW Functions that shows me exactly how to control the air cylinder,compressor,solenoids,relay: the proper steps on how to program each of the 4 subVI'S that were listed I am still looking for help
thanks n i would really to be there but my team and i aren't goin to the Bayou regional this week we are going to the regional in Arkansas
Uh. If you're with 4297, they're registered for Bayou according to FIRSTs website. You can't just change which regional(s) you're going to on a whim.
Maybe try posting an image of what you have tried so far?
What happens currently when you run the code you are using?
How many solenoids do you have? Do you see any lights change on the 9472 solenoid module in the cRIO chassis?
Alan Anderson
18-03-2013, 17:12
Using LabVIEW, you have access to some very good example code and tutorials.
On the left side of the Getting Started window, select the Support tab, then click on the "Find FRC Examples..." link. Browse for the "Solenoid with Compressor" example project (it's in the Pneumatics subfolder under FRC Robotics) and open it. It shows you exactly how to make a compressor work and exactly how to control a solenoid.
One of the tutorials you can find from the Getting Started window is Tutorial 7 - Integrating Examples into Robot Code. That'll tell you how to take the working code from the example and put it into your robot program.
chriz4gx
18-03-2013, 17:52
Hope this Helps!
Are you connecting your solenoids to a relay or the cRio Solenoid Bumper?
Maybe try posting an image of what you have tried so far?
What happens currently when you run the code you are using?
How many solenoids do you have? Do you see any lights change on the 9472 solenoid module in the cRIO chassis?
Thanks for the image.
My other two questions still apply to helping us figure out if the problems is in the wiring, code, execution, etc.
Do you initialize "DoubleSolenoid" in the Begin VI? (I assume you do just want to make sure)
You are expecting it to only go out while you have the button pressed and held correct? Do you see the joystick input on the Dashboard? I am not sure the type of solenoid/how you have it connected but have you tried using reverse instead of forward.
Is your compressor running / do you have pressure when you test this?
yes i do initialize Double Solenoid in the begin vi
Alan Anderson
19-03-2013, 12:44
this is my program.
You labeled it Begin, but the picture is obviously Finish.
So what's the problem? Tell us what you want the robot to do, and what it's doing instead.
Right now wat I am mostly trying to do is make sure that my compressor is workin
I'm still quite concerned by tim's Regional confusion.
Whether or not the robot works is irrelevant if they show up at the wrong regional with it.
So far I have only seen code that deals with the solenoids. Starting the compressor is a separate piece of code have you included that?
I found an image of someone else's begin VI code here with some compressor code in it so you will want to check you have something like that. You could probably also copy the code out of the example mentioned above.
http://www.chiefdelphi.com/forums/attachment.php?attachmentid=12090&d=1330110193
Alan Anderson
19-03-2013, 13:05
To verify that you have everything properly wired to control a compressor, and to see the programming that makes it work, follow the example and tutorial (http://www.chiefdelphi.com/forums/showpost.php?p=1249820&postcount=7) I pointed you to earlier.
I'm still quite concerned by tim's Regional confusion.
Whether or not the robot works is irrelevant if they show up at the wrong regional with it.
I just sent an email to the contact address on their website:
http://www.wenonahrobotics.webs.com/
I hope so too
THIS is my begin
You have no need for the while loop. Please see the example he is pointing you to!
i did not program the begin
I just sent an email to the contact address on their website:
http://www.wenonahrobotics.webs.com/
I hope so too
we already have that sqared away,we have talked to FIRST National,and our BAYOU REGIONAL administrators. We Thank You for your consideration .
Reggie335
19-03-2013, 14:38
So far I have only seen code that deals with the solenoids. Starting the compressor is a separate piece of code have you included that?
I found an image of someone else's begin VI code here with some compressor code in it so you will want to check you have something like that. You could probably also copy the code out of the example mentioned above.
http://www.chiefdelphi.com/forums/attachment.php?attachmentid=12090&d=1330110193
I am also using my solenoids to control my air compressor
Are you currently trying to operate the compressor and cylinders on a bench setup do you just want to make sure that your code will work once you get there?
I will be the Control System Advisor at the Razorback Regional. Look for one of the volunteers in an orange hat on Thursday and we will help get your compressor and solenoids working.
In the Begin, you do not need the Relay Open block. It is taken care of by the Compressor Open.
In the Solenoid Open, you have both solenoid channels selecting Solenoid 1.
You need to add a Set Ref for the compressor so it can be used inside of Periodic Tasks.vi. Make sure that in Periodic Tasks that the compressor code is enabled and the reference is set to the same name as you add in the Begin.vi.
In Teleop.vi, the release will need to be set to "Reverse", not "Off". Off leaves the valve in the last state.
Alan Anderson
19-03-2013, 16:43
THIS is my begin
i did not program the begin
Someone on your team did, and they did it wrong. The Compressor Enabled status check, and the while loop that contains it, should not be there. Instead, there should be a Compressor RefNum Set giving the compressor reference a name, and that same name should be used in the Compressor RefNum Get that feeds the compressor control loop function in Periodic Tasks.
Start with the example project I told you about. Get it working first. Then use the tutorial I told you about to move the example code into your robot program.
Hey, thanks and i was wondering when it comes to my victor motors do i have to program them into Teleop.vi.
What are these victors used for?
You will need to create an Open Motor and Motor Set reference in Begin. Then you will need to use them in teleop.
What are these victors used for?
You will need to create an Open Motor and Motor Set reference in Begin. Then you will need to use them in teleop.
The victors are for the shooter,and I've done all of that in the begin i just need to know how to do it in the teleop
Alan Anderson
20-03-2013, 10:48
The victors are for the shooter,and I've done all of that in the begin i just need to know how to do it in the teleop
There's also a Motor Control example. It's pretty trivial -- all you need to do is wire the desired input to a Motor Set function.
There's also a Motor Control example. It's pretty trivial -- all you need to do is wire the desired input to a Motor Set function.
Hey, i tried that it didn't hep
Alan Anderson
20-03-2013, 13:54
When you say the example didn't help, do you mean that it didn't work? Or do you mean that it worked but you weren't able to implement what it did in your own program?
If the example didn't work, there is a problem with your wiring. Give us as much detail as you can about how you have your motor and speed controller connected to the rest of the robot, and we'll try to help you figure out what's wrong. A clear picture of the wiring would be a big help.
If the example works, then there is a problem with your software. Show us what you did, in both Begin and Teleop, and we'll try to help you figure out what's wrong.
When you say the example didn't help, do you mean that it didn't work? Or do you mean that it worked but you weren't able to implement what it did in your own program?
If the example didn't work, there is a problem with your wiring. Give us as much detail as you can about how you have your motor and speed controller connected to the rest of the robot, and we'll try to help you figure out what's wrong. A clear picture of the wiring would be a big help.
If the example works, then there is a problem with your software. Show us what you did, in both Begin and Teleop, and we'll try to help you figure out what's wrong.
There really wasn't an example it was just basically explaining about each sub vi's
Alan Anderson
20-03-2013, 16:00
There really wasn't an example it was just basically explaining about each sub vi's
The Motor Control example project should be in the Robot and Motor folder of the NI Example Finder (assuming you're browsing by Task, which is the default).
If you won't share details of your wiring or your existing code, there's really not much more we can do to help you.
The Motor Control example project should be in the Robot and Motor folder of the NI Example Finder (assuming you're browsing by Task, which is the default).
If you won't share details of your wiring or your existing code, there's really not much more we can do to help you.
Alright, this is it i got a Solenoid that is plugged up to my Relay Channel on the top of my cRIO,my Air Compressor has two Air Cylinders and 1 piston that are all plugged in my air compressor's pressure switch, which is plugged into the Digital I/O Channel 1 on the digital sidecar. Finally I have a Spike Relay and it is plugged into the Relay Channel on the digital sidecar
Alan Anderson
20-03-2013, 19:37
Alright, this is it...
Your description isn't clear enough for me to get a good idea of what you're trying to do. You did give enough detail about the pressure switch to be able to verify half of the code that initializes the compressor, so that much is good.
I'm mostly having problems understanding what you're trying to say about your pneumatics system. There's obviously a problem with shared terminology -- I can't tell what "two Air Cylinders and 1 piston" is supposed to mean, for example. Pictures would help a lot.
It probably would also help a lot if you used the tutorials and example projects that are included with LabVIEW.
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