Vision Tracking Help

[bprobotics]

Alan, I switched to doing the vision processing on the dashboard. In order to get just one image, I set it so that the Loop Iteration > 1, sends true to the loop condition which is stop if true. If the iteration < 1, it sends false to the loop condition. Unless I am mistaken, this should only analyze one image every time the loop runs, correct? I am also using smart dashboard variables to send the distance from Target Info[0] to the cRIO when I press button 1 on the joystick. I think I need a SD variable to send this to the dashboard also but it didn't appear to be working. For whatever reason, the cRIO CPU usage spikes when I press that button.

[Alan Anderson]

Originally Posted by bprobotics

Alan, I switched to doing the vision processing on the dashboard. In order to get just one image, I set it so that the Loop Iteration > 1, sends true to the loop condition which is stop if true. If the iteration < 1, it sends false to the loop condition. Unless I am mistaken, this should only analyze one image every time the loop runs, correct?

You're really trying hard to do things in a way that the provided code isn't set up to work. That loop is intended to start when the program begins and continue to run until the program is shut down. If you stop it, what's going to start it up again? I urge you modify the example code as little as possible.

Since you've abandoned the easily-controlled cRIO code, the small modification I would suggest is to surround the actual vision processing functions with a Case block that 1) runs when a global boolean is set True, and 2) sets that boolean False when it runs.

[bprobotics]

Well, I was able to get it running on the dashboard, but i really only need the distance occasionally. Would my PID code still work if the distance is constantly changing? How would you go about implementing the code if it were for your robot?