Forum: Extra Discussion
08-02-2009, 01:21
|
|
Replies: 6
Views: 1,504
Re: pic: Sidecar problem
Technically that would be a solder reflow problem, not a wave-flow problem. ;) Wave soldering is used to solder through-hole parts, whereas reflow soldering is used for surface-mount parts.
Looks...
|
|
Forum: Control System
06-10-2008, 09:02
|
|
Replies: 25
Views: 6,339
Re: Cool Control Boxes
How about this one: http://www.chiefdelphi.com/media/img/36d/36d1e552430b6749d7eae2ce6190d197_l.jpg :rolleyes:
|
|
Forum: Programming
25-04-2008, 22:45
|
|
Replies: 31
Views: 7,366
|
|
Forum: FRC Control System
22-04-2008, 20:51
|
|
Replies: 296
Views: 45,527
Re: NEW 2009 Control System Released
I agree 100% with the above.
One other issue that I haven't seen brought up here is platform lock-in. With the old system, teams could use Windows, Linux, or Mac to program the robot with, and the...
|
|
Forum: FRC Control System
20-04-2008, 19:52
|
|
Replies: 296
Views: 45,527
Re: NEW 2009 Control System Released
Yes! 100% correct on all counts--being an embedded developer myself, these were the exact complaints I had, but didn't know if I should mention them here or not.
If you want someone else to...
|
|
Forum: FRC Control System
20-04-2008, 16:59
|
|
Replies: 296
Views: 45,527
Re: NEW 2009 Control System Released
From what I understand, having attended the "training" session at Nationals and talked with the NI guys separately, the FPGA will most likely be acting like the old IFI Master processor, and...
|
|
Forum: FRC Control System
17-04-2008, 21:53
|
|
Replies: 296
Views: 45,527
Re: NEW 2009 Control System Released
Does anyone know anything more about the vision processing?
Framerate?
Resolution?
Color or black-and-white?
Color based tracking or higher level (geon-based, SIFT, etc)?
Does it use the FPGA?
|
|
Forum: Regional Competitions
30-03-2008, 20:22
|
|
Replies: 41
Views: 5,802
|
|
Forum: Programming
27-03-2008, 23:49
|
|
Replies: 14
Views: 1,774
Re: Weird hybrid mode in competition
In the current field control system only. During manual toggling of the autonomous/disable signals, this will not hold true.
If you like, you can observe this behavior for yourself on the...
|
|
Forum: Programming
27-03-2008, 19:39
|
|
Replies: 14
Views: 1,774
Re: Weird hybrid mode in competition
The IFI control system can enable the robot before the autonomous flag has been set--this was documented elsewhere, although I cannot remember exactly where. :o
What I would do is poll the disable...
|
|
Forum: General Forum
13-03-2008, 14:53
|
|
Replies: 38
Views: 8,269
|
|
Forum: Electrical
10-03-2008, 20:32
|
|
Replies: 5
Views: 964
Re: Signalling voltage question
You are correct; the dashboard port on the RC signals at +/- 12V. It does this by using a little IC known as a MAX232.
The MAX232 is a voltage level translator specifically designed for the RS232...
|
|
Forum: General Forum
10-03-2008, 16:23
|
|
Replies: 27
Views: 3,542
|
|
Forum: Control System
04-03-2008, 00:03
|
|
Replies: 28
Views: 3,662
Re: Use Velcro on your Control Board!!
I know the feeling--this happened to team 81 back in 2006 when I had built that fancy operator console with the laptop inside. A team came speeding along in autonomous and slammed the alliance wall,...
|
|
Forum: Programming
27-02-2008, 01:47
|
|
Replies: 11
Views: 2,247
Re: [not-FIRST] Camera Image Processing
Well, to do the task that you are describing should be pretty simple:
1. Run the entire image through a color thresholding algorithm--replace pixels that are "close" to your desired color with a 1,...
|
|
Forum: General Forum
12-02-2008, 01:27
|
|
Replies: 8
Views: 1,514
Re: GDC Strikes again
From statics, if an object is immovable, then it will generate an equal and opposite force to the original force. So, even if that applied force is infinite, immovable object still wins and the...
|
|
Forum: Electrical
07-02-2008, 02:52
|
|
Replies: 6
Views: 924
Re: Interesting victor failure
If you are interested in the exact cause of the MOSFET failure, take a look at this Web page: http://www.4qd.co.uk/serv/MOSFETfail.html
Especially look under the section entitled dV/dt failure--it...
|
|
Forum: FIRST E-Mail Blast Archive
30-09-2007, 17:21
|
|
Replies: 10
Views: 1,640
Re: FIRST Blast???
Yes, once it is working anyone can sign up.
No, I am using the EZMLM on Linux. Not so easy... ;)
BTW if you have a recent blast, please forward it to me, headers and all, at...
|
|
Forum: FIRST E-Mail Blast Archive
30-09-2007, 02:08
|
|
Replies: 10
Views: 1,640
Re: FIRST Blast???
Well, it looks like the messages are STILL not getting through when FIRST sends them out.
Could someone who has actually received one of the blasts please forward it to me, headers and all, so that...
|
|
Forum: FIRST E-Mail Blast Archive
12-09-2007, 18:25
|
|
Replies: 10
Views: 1,640
Re: FIRST Blast???
Thanks, it's good to know that message went through!
Basically, the list was rejecting any messages from the address that I had given to FIRST. :o I am not sure if they have removed me from their...
|
|
Forum: FIRST E-Mail Blast Archive
12-09-2007, 18:16
|
|
Replies: 10
Views: 1,640
Re: FIRST Blast???
I am in the process of repairing the problem that has prevented the recent blasts from coming through. I do apologize for the inconvenience, however FIRST has not sent any blasts for quite some...
|
|
Forum: Control System
11-09-2007, 12:34
|
|
Replies: 29
Views: 4,034
Re: New R/C Chicken or the Egg
One minor change that I think would help the peripheral issue would be the addition of an I2C or SPI interface. You can get almost any kind of sensor for I2C, and the bus can support many, many...
|
|
Forum: Programming
16-08-2007, 14:26
|
|
Replies: 27
Views: 2,994
Re: Programer's excuse
Obviously no one here has gotten into the wonderful world of large-scale FPGA synthesis, or compiling the Linux kernel, for that matter. Those processes can take hours!!! :ahh:
|
|
Forum: Electrical
04-08-2007, 03:15
|
|
Replies: 21
Views: 2,525
Re: O/I POWER?
Technically each OI can draw up to 1000mA (1 amp!) at 12 volts.
|
|
Forum: General Forum
31-07-2007, 02:25
|
|
Replies: 0
Views: 1,222
FIRST Email Blast List
OK, I couldn't post in my original thread, so I am posting here.
As many of you are probably aware, I had a power outage recently that took my Email server out of commision, thus destroying the...
|
When I was going down that one escalator that led to the field between the buildings and getting my first look at it, I felt like Dorothy walking into Oz. - Dr. Acula [more] 
