Forum: Electrical
18-05-2016, 17:26
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Replies: 11
Views: 1,956
Re: Robot RGB LEDs
I have a long post discussing various addressable LED strips somewhere in my post history, I'll see if I can dig it up. But I will say, regardless of what you decide to use, don't order from a US...
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Forum: General Forum
12-04-2016, 20:13
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Replies: 27
Views: 3,893
Re: FRC 71 2002 Marching technique
Rules lawyering for last years game wasn't even sporting. If for whatever reason FIRST decides to have another game with 0 interaction between alliances, there's no chance it allows most of the...
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Forum: Programming
11-04-2016, 23:06
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Replies: 7
Views: 1,266
Re: OpenMV
OpenMV and the Jetson are not even remotely comparable. For one thing, the Jetson TK1 is actually available. Last I heard, OpenMV was struggling with manufacturer problems with bad solderballs on one...
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Forum: General Forum
11-03-2016, 08:46
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Replies: 32
Views: 7,631
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Forum: Technical Discussion
03-03-2016, 00:23
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Replies: 15
Views: 2,425
Re: Question About Bumpers (R19, Specifically)
The side there is much greater than 8" there. The side extends from the bottom right corner to the top right corner, even if there is no frame there. The backing from the robot's frame there does not...
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Forum: Electrical
01-03-2016, 12:34
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Replies: 32
Views: 5,093
Re: How to wire a flashlight?
I just got a batch of those LEDs and I have been wondering how best to power them. Can you use one of the drivers for multiple of those LEDs in series? Like someone above said, LEDs don't follow...
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Forum: General Forum
28-02-2016, 23:14
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Replies: 18
Views: 1,558
Re: Visual Tracking Help
My team has been able to track both distance and angle to the target pretty reliably based off of GRIP. Search Tower Tracker from the programming subforum, we based our math off of that, but we used...
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Forum: General Forum
27-02-2016, 03:17
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Replies: 49
Views: 4,823
Re: Taking the Bag out of Bag Day
My understanding of why we have bag day is to make it even for the teams that have to ship their robots halfway around the world to compete. Those teams don't have to worry about getting a practice...
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Forum: Car Nack's Corner
26-02-2016, 00:54
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Replies: 10
Views: 3,115
Re: Car Nack Predicts 16-2
Alternate interpretation: Teams will value different traits in their defenses going into higher levels of competition. Teams will pick obstacles that are difficult for weaker competitors to cross at...
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Forum: Electrical
22-02-2016, 22:05
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Replies: 31
Views: 5,821
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Forum: Java
19-02-2016, 01:19
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Replies: 8
Views: 721
Re: Using the ADXL345
For what it's worth, gyros are much more accurate in the pitch rotation, which you're attempting to do, at least if you have a smart gyro.
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Forum: Programming
19-02-2016, 00:51
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Replies: 88
Views: 24,529
Re: Tower Tracker 1.0
We got it all compiled into a jar and running, but it never seems to open the connection to the camera. It's at the right IP, if we put the address in the code in our browser the mjpg stream comes...
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Forum: Electrical
18-02-2016, 01:21
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Replies: 4
Views: 921
Re: What ESC Could Work for CIMS?
I think the cheap & dirty control system predates the existence of REV Sparks ($45) and SD540($49, 2x$95, 4x$188), both of which are cheaper than those and can take much, much more power which may be...
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Forum: Java
09-02-2016, 23:20
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Replies: 6
Views: 598
Re: ITG3200 Gyroscope
My guess is that it does output in degrees. 16 bit 2s complement is fancy way to say "short" as far as Java is concerned. Presumably 1 degree = 1 on the short, 100 degrees = 100 etc.
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Forum: Technical Discussion
08-02-2016, 14:34
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Replies: 110
Views: 19,740
Re: Rhino track failier?
It seems like the fact that there's an edge rather than a chamfer/fillet where the well for the screwhead begins (radially out from the center) might be a point of failure. All of the fractures...
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Forum: Motors
08-02-2016, 10:42
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Replies: 6
Views: 1,139
Re: Out of Spec CIM motor
That's actually really interesting to know, thanks. I always figured it just got sent in place of a proper CIM on year by mistake.
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Forum: Motors
08-02-2016, 10:05
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Replies: 6
Views: 1,139
Re: Out of Spec CIM motor
My team has had a CIM which is significantly larger than standard sitting around the shop for quite a while, I'll see if I can get pictures of it later today. I remember it being a larger diameter,...
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Forum: Electrical
02-02-2016, 22:52
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Replies: 8
Views: 1,149
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Forum: Technical Discussion
02-02-2016, 18:57
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Replies: 22
Views: 2,856
Re: Chain Tension-er?
I suspect if you could get it to print right with the proper spacing, ABS would have enough flex without being too squishy or too rigid. The trick is getting it right.
As far as spacing, the only...
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Forum: Technical Discussion
31-01-2016, 13:37
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Replies: 22
Views: 2,856
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Forum: Sensors
31-01-2016, 03:13
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Replies: 1
Views: 432
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Forum: Technical Discussion
30-01-2016, 19:56
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Replies: 22
Views: 2,856
Re: Chain Tension-er?
My team had one of these (http://www.renoldjeffrey.com/nmsruntime/saveasdialog.asp?lID=553&sID=2816) things sitting around while we were chaining this year's robot and we couldn't get the right...
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Forum: Electrical
30-01-2016, 19:48
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Replies: 12
Views: 1,356
Re: Serial LED Strip
In the picture there are only 3 solder pads on the strip, which means there should only be 3 wires coming out. Can you post a picture of where the leads meet the strip so I can see what on earth the...
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Forum: Electrical
30-01-2016, 17:45
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Replies: 12
Views: 1,356
Re: Serial LED Strip
Those are WS2812s according to the product name, so there's no reason that Adafruit's NeoPixel libraries wouldn't work with them.
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Forum: Kit & Additional Hardware
29-01-2016, 08:30
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Replies: 5
Views: 738
Missed 2nd FIRST Choice
My team failed to put in the request for the second round of FIRST Choice. My understanding is that there were some other components that everybody got shipped with their order. Do we miss those as...
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Trust me. I am a Clock after all. ;) - Elgin Clock [more] 
