LabView code of other teams ?

[eren96]

I tried to understand them, but some seems hard to edit to me, especially when you add some additional vi s beside the default code. Now we can control our drive train and run arm motors, but can't control the pistons as we wanted. I added the default compressor code and by the help of pressure switch the pressure always sets himself to correct range. However the extend and retract functions only work when the pressure is above 100 psi. We use super shifters in our drive system and wired 2 shifting pistons to one solenoid to shift at the same time. So, 100 psi isn't needed to shift. How can we control pistons whenever we want to and no matter the pressure is?

[Alpha Beta]

Originally Posted by eren96

So, 100 psi isn't needed to shift. How can we control pistons whenever we want to and no matter the pressure is?

Try loosening the cylinder nut a little. Sometimes the alignment on the AM Shifters are a little off and they can bind up when fully tightened.

[Alan Anderson]

Originally Posted by eren96

...the extend and retract functions only work when the pressure is above 100 psi.

That sounds almost like the code to control the cylinder is only running when the compressor is not. Can you show us the relevant parts of your program?

[eren96]

Originally Posted by Alan Anderson

That sounds almost like the code to control the cylinder is only running when the compressor is not. Can you show us the relevant parts of your program?

No, even if the compressor is running, we can still control extend and retract functions, but within some specific range.

http://imgur.com/yWLShcp
http://imgur.com/JcrDTcO&yWLShcp&NfAFJ3K&O8KQNNz#0 (green wires come from two different buttons)

These are the codes releated to our solenoids in our begin and teleop vi. To try in a different way, we first ran the compressor and filled the air tanks and then wired a solenoid and run the program. It still does the same thing. Although the pressure switch or compressor aren't wired, we can't extend the pistons below nearly 100 psi. Is it normal?

[Alan Anderson]

Originally Posted by eren96

http://imgur.com/JcrDTcO&yWLShcp&NfAFJ3K&O8KQNNz#0 (green wires come from two different buttons)

There's a red dot on the input to Solenoid Set. It means you've connected something of a type that the function doesn't expect, and it has coerced the value to something it can use. Where did you get the Forward, Reverse, and Off constants that you have going into the Select functions? It's possible that you're feeding the Solenoid function with Relay values. They happen to be completely compatible and shouldn't cause problems, but it's usually a good idea to keep the program as "happy" as possible.

Although the pressure switch or compressor aren't wired, we can't extend the pistons below nearly 100 psi. Is it normal?

Most pneumatic systems will "work" down to 30 psi without difficulty, though they of course won't provide much force. I don't think your symptoms can be explained by anything in the code. It's probably time to examine your pneumatic system in detail. What kind of solenoid valves are you using? Do they have a manual actuation feature, perhaps a small button or lever?

Or maybe whatever you have the cylinder connected to just requires that much force in order to move. What is the mechanism you're trying to activate with the cylinder?

[eren96]

Originally Posted by Alan Anderson

There's a red dot on the input to Solenoid Set. It means you've connected something of a type that the function doesn't expect, and it has coerced the value to something it can use. Where did you get the Forward, Reverse, and Off constants that you have going into the Select functions? It's possible that you're feeding the Solenoid function with Relay values. They happen to be completely compatible and shouldn't cause problems, but it's usually a good idea to keep the program as "happy" as possible.



Most pneumatic systems will "work" down to 30 psi without difficulty, though they of course won't provide much force. I don't think your symptoms can be explained by anything in the code. It's probably time to examine your pneumatic system in detail. What kind of solenoid valves are you using? Do they have a manual actuation feature, perhaps a small button or lever?

Or maybe whatever you have the cylinder connected to just requires that much force in order to move. What is the mechanism you're trying to activate with the cylinder?

We solved our problems with solenoids. Thanks for your help. I guess I was lack of some essential information about solenoid. First we changed the code and then checked our wiring. We found out that our solenoid breakout is not fed by 24v on pdb and fixed it by wiring it to C and NC outs. All of our solenoids are 24v, we missed that detail. We can finally drive our robot, shift and control other pneumatic systems properly.

Now, the only thing that was left is vision processing in autonomous. We looked over the example code and tried to understand it. We could customize our dashboard by the example code. However, we still don't have any idea how to link the example code to our robot actions in autonomous mode. I know this thread is going far from its title and hope that it's not a problem. Do you have any simple and clear resources about using vision processing code in auto mode?