Tag: LabVIEW

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Calibrating the Axis 206 camera for Green Light tracking. by Phil Malone
Initial experiments during beta testing showed that this camera had difficulty with the FRC green (cold cathode) target light because the camera saw the localized brightness of the light as white. This apparent “white” color made target discrimination difficult. Unfortunately there is no programmatic way to instruct the camera to reduce its exposure enough for the target light to be seen as “green”.

This document describes one method to “trick” the camera into running with the appropriate exposure. The process involves placing the camera in “Auto Exposure” mode while completely filling the camera’s field of view with the green target light. Once the camera has automatically reduced the exposure to the point where the light appears green, the exposure is set to “Hold Current” which locks-in the desired exposure. Since this setting is non-volatile, as long as the robot program does not put the camera back in Auto Exposure, the software will be able to identify and track the target light.

Joystick Filters in LabVIEW by Eric VanWyk
A short list of options to adjust the sensitivity of joysticks, with a focus on maintaining traction for Lunacy.

LabVIEW 2011 & NI cRIO-FRC II: New vs. Old by Robotics Resource Center (WPI)
Presented by Doug Norman, National Instruments, at the 2012 FRC Kickoff Workshops.

The presentation with audio is available through the link(s) on the right. Due to internet connectivity issues during recording, it is possible that some videos may have low quality audio at times, cut in and out, or not show video at all times.

The video links on the right likely required the GoToMeeting codec to be downloaded in order to be viewed successfully. Due to this, some Apple machines and products may have difficulty viewing, although we are working on creating Mac-friendly copies. To download the codec, go to https://www2.gotomeeting.com/codec?Portal=www.gotomeeting.com

LabVIEW for FRC 2012 by Robotics Resource Center (WPI)
Presented by Doug Norman, National Instruments at the 2012 FRC Kickoff Workshops.

The presentation with audio is available through the link(s) on the right. Due to internet connectivity issues during recording, it is possible that some videos may have low quality audio at times, cut in and out, or not show video at all times.

The video links on the right likely required the GoToMeeting codec to be downloaded in order to be viewed successfully. Due to this, some Apple machines and products may have difficulty viewing, although we are working on creating Mac-friendly copies. To download the codec, go to https://www2.gotomeeting.com/codec?Portal=www.gotomeeting.com

Print Custom Status on the Driver Station LCD. by Joe Hershberger
How to get your robot to print to the LCD on the Driver Station from both LabVIEW and C++.

Programming 101: Getting Started with LabVIEW, JAVA, and C/C++ by Robotics Resource Center (WPI)
Presentation from the 2011 FRC Rookie Workshop by representatives from National Instruments, Oracle, and WPI.

Programming the FRC Control System by Robotics Resource Center (WPI)
Author: Miller and Hersberger

Presented as part of the 2009 FIRST Kickoff Workshops, these three presentations cover the hardware and FPGA, programming in LabVIEW, and programming in C/C++.

Video Training for the Control System by Brad Miller
There have been a number of training events that happened at WPI around the FRC Control System. This articles describes some of those videos with links to view them.

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