11-30-2008 02:19 PM
We've been working on our robot for the past several weeks and we are about done with construction and programming. We are having a slight problem with our controls. Everything we tell the robot to do in teleop is delayed by about 1/2 a second. The arm is toned down enough that it's not that big of a deal, but the delay is making driving the base VERY difficult. We installed both updates from the NI site. I double checked the installation process and everything was done correctly. We are going to try a work around the problem by setting up a deadzone on the control sticks, but that does not solve the underlying issue. Several other teams are reporting the same issue. Is there a systemic problem or are we doing something wrong?
11-30-2008 05:09 PM
Sorry, just notice you said FTC, this is for FRC.
The lag is a known problem the is being worked on.
See this thread on the beta forum:
http://forums.usfirst.org/showthread.php?t=10512
12-02-2008 01:21 PM
Have you installed the most recent update? We put one up on about the 18th of November or so. I know you said you installed both updates, but we haven't been adding more - we've just been "updating the update" for the motors to avoid confusion. If you updated before that, try the newest version and see if it helps.
Otherwise, I'd have to take a look at your code. You can email it to me at ramsey.nasir@ni.com.
12-02-2008 06:05 PM
Rnasir,
We updated on Nov. 29th. According to your information, we have the most current update. We have mitigated the problem by putting a deadband (+/- 10) on the sticks. The lag is still there, however. I'll send you the code as soon as i can get it off the school computer. We have been lax in out comments so i'm going to have my students put some in to help with navigation.