LitePlacer.com forums

Juha, I have found your code using _locker. I think there is a problem with it. The example you reference shows two tasks running and the processing is done inside locked regions using the _locker lock. The problem with this is that we don't have access to the second task. The paint operation is don...

Juha, This URL has some discussion about the invalid operation with paint. http://stackoverflow.com/questions/1060280/invalidoperationexception-object-is-currently-in-use-elsewhere-red-cross Perhaps the camera functions like DrawCrossFunct need to be made thread safe? Steve This post has been made o...

Juha, Below is a dump of the exception report for the crash. As you can see the paint operation is having the issue. Steve See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.InvalidOperation...

BTW In my opinion it is not bad coding practice to write the reference that way. Any decent programmer should know that is a reference.

So on a mouse move event in the Placement_pictureBox one should be passing the Tapes_pictureBox object to the General_pictureBox_MouseMove function? Why not pass the Placement_pictureBox object? I am not familiar with these Windows objects, so I don't really understand what is happening. It just see...

I was going to wait until we were successful to respond. We are closer but not completely successful. Thank you for the tips. The manual configuration is helpful. We couldn't get the green needle to work, but we have had some success with the red needle. We are still not accurate enough. If we hit t...

We have been getting crashes which say "InvalidOperationException - object is currently in use elsewhere" for mainly the Placement_PictureBox and it goes to a box with red diagonal lines. We must restart the program to get the image back. At line 6077 in MainForm.cs we have the following p...

Ok, the wobble algorithm is not that simple :( . But assuming the ellipse shape is repeatable (i.e. the A axis is not precisely vertical so we are looking at a circle at an angle), our wobble compensation should be to the center of the ellipse and the cam to needle offset to that center. It takes mu...

I have a new machine. Foolishly I created a board with 0402s, so they are the first parts I am trying to place. I am having a problem with the needle pressure algorithm. If I try to free place a part, the needle goes to maximum pressure (limit switch) and backs off to the desired pressure. The maxim...

I just joined the forum, I have a new machine. I agree that the compensation should be relative to the A axis. Ironically, the algorithm to do this is quite simple. First one must realize that the needle point is at some distance from the A axis. If we rotate the needle 180 degrees the distance betw...