solenoid button help

[Mark McLeod]

Single solenoids are true/false devices.
They are either "On" or "Off"

Double solenoids would use "Forward" and "Reverse"

[Team3993Tom]

Originally Posted by Mark McLeod

Single solenoids are true/false devices.
They are either "On" or "Off"

Double solenoids would use "Forward" and "Reverse"

Is there a way to do it with a single?

[Joe Ross]

Originally Posted by Team3993Tom

Is there a way to do it with a single?

Please explain what you mean by forward and reverse. If you mean two states, a single solenoid also has two states.

[Mark McLeod]

Just change where you use "Forward" to "On" instead
and change "Reverse" to "Off"

[Team3993Tom]

Originally Posted by Joe Ross

Please explain what you mean by forward and reverse. If you mean two states, a single solenoid also has two states.

I'm trying to have a cylinder push out and come back by using buttons on my controller. I was able to get the toggle to work by switching it to on and off instead of forward and reverse, but for some reason the two button is not working even though I did the same thing.

[Mark McLeod]

When you continue to hold both buttons 3&4 down at the same time the solenoid module LEDs aren't changing?

[Team3993Tom]

Originally Posted by Mark McLeod

When you continue to hold both buttons 3&4 down at the same time the solenoid module LEDs aren't changing?

ok it is working now but sadly it wasn't what I was hopping it would be. The idea was to make it go out if I press button 3 and stay in that position, but then go back in when I press number 4.

[Qbot2640]

Disclaimer - I'm not a programmer - but I understand the solenoid:

A solenoid has a normally open and a normally closed condition. If your steady state condition would be the closed (rod inside cylinder) then hitting the momentary button on the controller sends the command to activate and change that state - but when you let go, it will go back to steady state.

You could do a number of things to get what you want - use a joystick or switch on the controller rather than a momentary button - so it "stays" in the activated state - or you could program that the button changes the condition from off to on. Push once for out, push again for back in. Probably a bunch more programming options - like I said, that isn't my specialty.

[Mark McLeod]

Here are two approaches:

1) Incorporate a feedback node to remember what your last choice was.

2) Embed the solenoid Set into two Cases, one for each button, so that it only gets Set when a button is pushed. The False Cases would be empty.

[Team3993Tom]

Originally Posted by Mark McLeod

Here are two approaches:

1) Incorporate a feedback node to remember what your last choice was.

2) Embed the solenoid Set into two Cases, one for each button, so that it only gets Set when a button is pushed. The False Cases would be empty.

where is the feedback node?

[Mark McLeod]

Programming -> Structures

[Team3993Tom]

Originally Posted by Mark McLeod

Programming -> Structures

Would the feedback be inside the case, connecting button to feedback then case, or case to feedback to set?

(by the way thank you for putting up with my stupid questions)

[Mark McLeod]

It's easier to show, so here's an example (attachment 1) using a Select (found under Programming -> Comparison), and a Feedback node that remembers what the last value set was.


The second attachment shows the alternate method that just uses Case statements. The extra Case boxes at the bottom are just there to show what the False cases look like.

[Team3993Tom]

Originally Posted by Mark McLeod

It's easier to show, so here's an example (attachment 1) using a Select (found under Programming -> Comparison), and a Feedback node that remembers what the last value set was.


The second attachment shows the alternate method that just uses Case statements. The extra Case boxes at the bottom are just there to show what the False cases look like.

thank you for all the help, I was able to get it all to work. if you know anything about mecanum drive, http://www.chiefdelphi.com/forums/sh...d.php?t=125051