Forum: Extra Discussion
16-12-2016, 14:59
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Replies: 17
Views: 1,116
Re: pic: 4143 differential swerve concept
There would be not a differential, just two cantilevered wheels. All the comments so far are spot on. A higher friction pivot bearing would help. You would probably want 3 encoders, but maybe just...
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Forum: Extra Discussion
16-12-2016, 04:39
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Replies: 17
Views: 1,116
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Forum: Programming
16-11-2016, 11:44
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Replies: 17
Views: 1,333
Re: Definitive Guide to Using the Jetson TK1/TX1?
I just did this a couple of months ago. Next time we'll try to document it better.
You need a system running Ubuntu 14.04 to install the Jetpack on. A vm might work but I haven't tried it. I did...
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Forum: Programming
14-11-2016, 11:12
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Replies: 31
Views: 2,841
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Forum: Technical Discussion
31-08-2016, 07:53
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Replies: 12
Views: 1,680
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Forum: Programming
28-04-2016, 16:20
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Replies: 13
Views: 1,091
Re: GRIP on NVIDIA Jetson TK1
And then after that look at https://github.com/FRC-Team-4143/vision-stronghold for one working example of a TK1 and a lifecam HD-3000.
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Forum: General Forum
20-04-2016, 18:37
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Replies: 190
Views: 42,702
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Forum: Programming
12-04-2016, 12:33
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Replies: 24
Views: 4,151
Re: How fast was your vision processing?
We used the Nvidia TK1. We used c++ and opencv with cuda gpu support. The actual algorithm was very similar to the samples from GRIP. Everything up to findContours() was pushed to the gpu. It would...
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Forum: Programming
04-04-2016, 23:16
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Replies: 13
Views: 1,264
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Forum: Programming
04-04-2016, 23:01
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Replies: 13
Views: 1,264
Re: Talon SRX magnetic encoder issues
Check for CAN bus errors in the driver station logs when you notice this happening. I may have noticed something similar, but it didn't affect our design so we didn't looked into it very hard.
Also...
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Forum: General Forum
04-04-2016, 22:30
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Replies: 40
Views: 2,812
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Forum: Programming
20-03-2016, 18:33
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Replies: 15
Views: 1,343
Re: problems with camera feeds at CIR
We also switched to static IPs at the event. We used mjpgstreamer on the Nvidia TK1 on port 5801. We had a small Chrome window connecting to the static IP of the Jetson. Something like...
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Forum: Championship Event
16-03-2016, 13:41
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Replies: 16
Views: 1,615
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Forum: Programming
10-03-2016, 11:31
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Replies: 52
Views: 12,771
Re: NVIDIA Jetson TX1
Using a supercapacitor would be in a grey area of R31 and R32 in my book. It's probably not a "battery". But it might be a "source of electrical energy". You wouldn't have a COTS exemption.
EDIT: If...
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Forum: Programming
10-03-2016, 10:52
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Replies: 52
Views: 12,771
Re: NVIDIA Jetson TX1
Which change did you do? Disable the circuit or change the capacitors?
I think we are just going to stick with the tk1 this year.
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Forum: General Forum
09-03-2016, 15:04
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Replies: 82
Views: 11,657
Re: Team Update 15 (2016)
My thoughts of 4mm thick heavy plastic strips getting raked over the inside of bot, swatting the cameras twice a cycle, are getting worse or worse. If they are stiff enough, they'll form a robot...
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Forum: Robot Showcase
09-03-2016, 00:29
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Replies: 18
Views: 3,802
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Forum: Technical Discussion
08-03-2016, 10:29
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Replies: 12
Views: 1,988
Re: Using the Xbox One controller ?
We tried the Xbox One controller and they worked.
But we use these:
http://www.gamestop.com/xbox-360/accessories/gamestop-xbox-360-controller/43229
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Forum: NI LabVIEW
08-03-2016, 00:00
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Replies: 12
Views: 605
Re: Dashboard Saving Values
Sorry, that would have worked for c++ or java. We haven't used labview in a few years. My bad.
Looking forward to seeing your bot at CIR.
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Forum: NI LabVIEW
07-03-2016, 22:46
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Replies: 12
Views: 605
Re: Dashboard Saving Values
There is a Preferences class. It stores persistent values in the RoboRio. You can load the default values for SmartDashboard variables from Preferences at startup. Then have a button on the...
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Forum: Robot Showcase
02-03-2016, 10:27
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Replies: 10
Views: 2,395
Re: Team 4143 Sir Twerve'alot 2016
We tested sliprings. The CAN bus functioned without issue through 4 sliprings. We removed them because the 12 (6 on each side) stiff 12 gauge wires were a mess. They may go back on the bot, but it...
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Forum: Robot Showcase
01-03-2016, 23:22
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Replies: 10
Views: 2,395
Team 4143 Sir Twerve'alot 2016
https://www.youtube.com/watch?v=a9x06bqDGrw
http://gallery.marswars.org/2016-build-season/page/5
http://gallery.marswars.org/cache/2016-build-season/JG7_4402_595.jpg
Tank treads + swerve == twerve
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Forum: Technical Discussion
22-02-2016, 09:59
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Replies: 15
Views: 2,173
Re: VersaPlanetary Failures
It has been suggested to tack weld the pins in a TIG torch. Then file back smooth. The darker colored carrier plates become grease impregnated, so you end up burning that out.
We've done this to...
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Forum: Technical Discussion
06-02-2016, 23:47
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Replies: 24
Views: 5,567
Re: Tank Swerve
https://twitter.com/MarsWars4143/status/696156498351779840
Our team has settled on "twerve drive".
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Forum: Programming
02-02-2016, 10:31
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Replies: 75
Views: 52,786
Re: NVIDIA Jetson TK1
Our zed just arrived yesterday. We are still waiting on a TK1. I think it has shipped.
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The theory is we'd lose a paper list but we haven't lost a student yet. - Peter Matteson [more] 
