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Search took 0.03 seconds; generated 74 minute(s) ago. search: Posts Made By: Jared Russell
Forum: General Forum 09-16-2016, 05:54 PM
Replies: 32
Views: 4,930
Posted By Jared Russell
Re: FRC Robots Aren't Real Robots?

According to a 6 year old I once met at a demo, our FRC machine was not a robot because, "How can it be a robot if it doesn't have a face?"
Forum: Programming 08-31-2016, 12:02 PM
Replies: 15
Views: 1,739
Posted By Jared Russell
Re: Auto-Aligning in Teleop

"Almost every case" is really pushing it, but the sentiment that not every application requires I and D is definitely correct.

For mechanisms that are well-approximated as a linear first-order...
Forum: General Forum 06-07-2016, 07:33 PM
Replies: 64
Views: 6,526
Posted By Jared Russell
Re: [FRC Blog] The 2016 Season, by the Numbers 2

95% sure that row 130 is 254.
Forum: General Forum 05-20-2016, 10:56 PM
Replies: 209
Views: 18,535
Posted By Jared Russell
Re: What can FIRST do to increase FRC team sustainability?

I still think that bag day is really relevant to team retention, but the reason why has little to do with practice bots. Many/most teams need the handicap of being able to change their robot after...
Forum: Programming 05-17-2016, 10:35 AM
Replies: 4
Views: 1,182
Posted By Jared Russell
Re: Setting exposure values on android with OpenCV

See: https://developer.android.com/reference/android/hardware/camera2/CaptureRequest.Builder.html

You want to use createCaptureRequest()
Forum: Programming 05-16-2016, 09:07 PM
Replies: 4
Views: 1,182
Posted By Jared Russell
Re: Setting exposure values on android with OpenCV

Looks like you aren't constructing mPreviewRequestBuilder before you use it.
Forum: Programming 05-12-2016, 09:16 PM
Replies: 20
Views: 2,657
Posted By Jared Russell
Re: NavX MXP Continuous Angle to Calculate Derivative

This year on 254 we switched to using a simple Rotation2d class for all angles (because, among other reasons, dealing with angle rollover as you did here is easy to screw up). Internally, this class...
Forum: General Forum 05-05-2016, 03:52 PM
Replies: 186
Views: 27,904
Posted By Jared Russell
Re: Split Champs assignment

Or, hypothetically, you could save your energy (and money) and skip the official half-championship in favor of an IRI-on-steroids type de-facto World Championship.

Hypothetically.
Forum: General Forum 05-04-2016, 10:47 AM
Replies: 119
Views: 15,612
Posted By Jared Russell
Re: Lesson Learned 2016 - The Negative

* The game piece (boulders) was ridiculously expensive and changed quite a bit after moderate use. 2006 poof balls remain the best foam game piece we have been given.

* This was a really onerous...
Forum: General Forum 05-04-2016, 10:45 AM
Replies: 45
Views: 5,219
Posted By Jared Russell
Re: Lesson Learned 2016 - The Positive

* The game was great for the most part, probably up there near 2013 as the best of the modern era. Roles for every team on the field, a good mix of offense and defense, a worthwhile vision task, the...
Forum: General Forum 05-03-2016, 12:02 AM
Replies: 48
Views: 12,066
Posted By Jared Russell
Re: Integrating Computer Vision with Motion Control - FIRST Championship Conference

It would work fine. The fact that the goal is static, and you can estimate your robot's movement VERY accurately over a few hundred milliseconds, combine to mean that you can do really well even...
Forum: General Forum 05-02-2016, 11:17 AM
Replies: 220
Views: 39,679
Posted By Jared Russell
Re: WILL.I.AM's comment on Einstein

You really don't recognize his accomplishments because he used profanity in a moment of candor?

You must have a very short list of heroes.
Forum: General Forum 05-02-2016, 10:58 AM
Replies: 48
Views: 12,066
Posted By Jared Russell
Re: Integrating Computer Vision with Motion Control - FIRST Championship Conference

Slides are here: https://goo.gl/mppi4E
Forum: General Forum 05-02-2016, 10:53 AM
Replies: 48
Views: 12,066
Posted By Jared Russell
Re: Integrating Computer Vision with Motion Control - FIRST Championship Conference

One way or another I will make sure a recording of this session (of sufficiently high quality) gets posted online. We will just redo it from home (and answer the questions that we received in...
Forum: Championship Event 04-30-2016, 09:38 PM
Replies: 47
Views: 11,681
Posted By Jared Russell
Re: Poofs Red Card Question?

The refs made two very tough calls for our alliance, but were trying to do the right thing in the face of imprecise rules and indirect observations of what actually happened on the field. I cannot...
Forum: Championship Event 04-30-2016, 09:21 PM
Replies: 34
Views: 5,914
Posted By Jared Russell
Re: Congratulations 987!!!

!!!

You inspire us,

Jared and everyone else on 254
Forum: General Forum 04-30-2016, 07:34 PM
Replies: 92
Views: 17,622
Posted By Jared Russell
Re: What will FRC 2016 Stronghold be remembered by?

This $@#$@#$@#$@# is mother$@#$@#$@#$@#in dope
Forum: General Forum 04-26-2016, 04:32 PM
Replies: 48
Views: 12,066
Posted By Jared Russell
Re: Integrating Computer Vision with Motion Control - FIRST Championship Conference

The turret is just running position PID (onboard a CAN Talon SRX). Turrets are much easier to control than a drivetrain (inertia, friction, and skidding are basically non-issues).
Forum: General Forum 04-26-2016, 11:57 AM
Replies: 61
Views: 7,114
Posted By Jared Russell
Re: New Blog Pit Assignments at the FIRST Championship

Feel like making 7 more of these? I'll can offer you some of that sweet, sweet rep in return.
Forum: General Forum 04-26-2016, 11:45 AM
Replies: 48
Views: 12,066
Posted By Jared Russell
Re: Integrating Computer Vision with Motion Control - FIRST Championship Conference

The intake also has some automation but no, I was speaking about the aiming and shooting subsystem.
Forum: General Forum 04-26-2016, 11:41 AM
Replies: 48
Views: 12,066
Posted By Jared Russell
Re: Integrating Computer Vision with Motion Control - FIRST Championship Conference

The operator holds a button saying they want to auto aim, and the driver holds a button saying that it's okay to shoot. Everything else is autonomous.
Forum: General Forum 04-25-2016, 04:01 PM
Replies: 92
Views: 20,033
Posted By Jared Russell
Re: Dropshots Fired!

Skepticism is healthy when it comes to robot videos! Until someone does this in a qualification or elimination match, it hasn't happened as far as I am concerned. I am confident in the legality and...
Forum: General Forum 04-25-2016, 02:50 PM
Replies: 39
Views: 7,162
Posted By Jared Russell
Re: Comparison of DIV MAX OPRs

Another trivia question for you stat-gurus out there to chew on...

Given random assignment of teams to 8 divisions, what is the probability that any division's [mean OPR, 90th %ile OPR, 75th %ile...
Forum: General Forum 04-25-2016, 01:39 PM
Replies: 92
Views: 20,033
Posted By Jared Russell
Re: Dropshots Fired!

We do not cross the center tape.
Forum: General Forum 04-23-2016, 02:48 PM
Replies: 48
Views: 12,066
Posted By Jared Russell
Re: Integrating Computer Vision with Motion Control - FIRST Championship Conference

Not sure, but I'll bring this up.



While this is not a strategy talk first and foremost, we will most certainly discuss this. In particular, we will look back at the history of vision in FRC and...
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