Forum: Extra Discussion
11-23-2012, 08:21 PM
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Replies: 24
Views: 7,444
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Forum: Electrical
11-13-2012, 07:55 PM
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Replies: 213
Views: 43,905
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Forum: Electrical
11-13-2012, 07:51 PM
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Replies: 213
Views: 43,905
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Forum: Electrical
11-08-2012, 08:12 PM
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Replies: 213
Views: 43,905
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Forum: Electrical
11-06-2012, 05:07 PM
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Replies: 213
Views: 43,905
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Forum: Electrical
11-06-2012, 12:46 PM
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Replies: 213
Views: 43,905
Re: New Talon Speed Controller
There are some other differences:
- Smaller footprint
- Lower mass
- Improved ingress protection
- Secure PWM connection
- Brake is maintained during disable
- PWM input can be split (2 Talons on...
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Forum: Extra Discussion
11-06-2012, 12:27 PM
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Replies: 33
Views: 12,677
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Forum: General Forum
10-09-2012, 12:06 PM
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Replies: 60
Views: 11,345
Re: FRC Blogged: - Motor Controllers
Something to think about.
-The Victor has been around for over a decade.
-It has never had internal over current protection and it has not affected it's performance on the field.
With the few...
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Forum: Electrical
09-27-2012, 01:59 PM
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Replies: 213
Views: 43,905
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Forum: Electrical
09-27-2012, 11:27 AM
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Replies: 213
Views: 43,905
Re: New Talon Speed Controller
Ok,
Sit down, relax...I assure you the sky is not falling.
There were a couple typos in the user manual, the ACTUAL expected pulse width is 1.0-2.0 ms with the center = 1.5 ms. The user manual...
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Forum: Electrical
09-27-2012, 10:37 AM
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Replies: 213
Views: 43,905
Re: New Talon Speed Controller
This was a typo in the User Manual. The actual refresh rate is 333Hz or (3 ms). The input capture is driven by an interrupt so as long as there is some space between the edges of the input pulse,...
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Forum: General Forum
09-26-2012, 10:01 AM
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Replies: 29
Views: 10,214
Re: Victor 888: Upgrade to the Victor 884
The output duty cycle is scaled linearly to the input, no additional math was needed to obtain a linear output.
The FRC version of the Jaguar has always been a high side switching synchronous...
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Forum: General Forum
09-25-2012, 09:38 PM
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Replies: 29
Views: 10,214
Re: Victor 888: Upgrade to the Victor 884
Oh that problem. That was the PTC. We have used Jags on our window motors since 2009 and have never seen a problem like this that was not caused by the PTC. Also I would like to correct some...
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Forum: General Forum
09-25-2012, 08:59 PM
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Replies: 29
Views: 10,214
Re: Victor 888: Upgrade to the Victor 884
This would not reduce the cost any significant amount. The only difference between a 20 amp design and a 40 amp design is the choice of FET's. A Fet with a lower continuous drain current would most...
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Forum: General Forum
09-25-2012, 08:49 PM
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Replies: 29
Views: 10,214
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Forum: General Forum
09-25-2012, 08:47 PM
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Replies: 29
Views: 10,214
Re: Victor 888: Upgrade to the Victor 884
If the fan came with the Talon then it's use would be mandated, if FIRST decides to make it legal. Having the fan separate would allow teams to only use the fan when necessary thus allowing for a...
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Forum: District Events
04-02-2012, 09:47 AM
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Replies: 18
Views: 3,369
Re: Troy District - 2012
Congrats to team 67, 469, and 244 on a well deserved win.
244 - you guys played well, and fit right in such a great alliance.
469 - So much to say about this team....I will keep it...
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Forum: CAN
03-12-2012, 10:06 AM
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Replies: 9
Views: 1,469
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Forum: Robot Showcase
03-04-2012, 09:48 AM
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Replies: 1
Views: 1,332
Re: NERD V: The Admiral - Team 2337
Congrats on your win. It was great to be able to watch it first hand. Coming back from a loss in the finals is always a challenge, you guys handled it like champs. Great robot, great alliance...
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Forum: Robot Showcase
02-23-2012, 01:53 PM
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Replies: 31
Views: 9,508
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Forum: CAN
02-16-2012, 07:50 PM
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Replies: 4
Views: 1,887
Re: 2CAN firmware update
The latest version of 2CAN firmware can be found at:
http://www.crosstheroadelectronics.com/2CAN_Firmware_2_24_FIRST.zip
Version 2.24 fixes a bug in the SPI hardware test that occasionally causes...
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Forum: CAN
02-10-2012, 04:34 PM
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Replies: 10
Views: 2,150
Re: Reducing CAN network noise
When using the 2CAN are you observing CAN errors in the web dash? Also how many jags are you running? Could you please describe what you mean by "glitches" all jags or only one or two? Have you...
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Forum: CAN
02-08-2012, 01:01 PM
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Replies: 3
Views: 1,272
Re: Magic 2CAN
Since CAN is a differential physical layer isolation is not required. Ground is not referenced as it is with PWM. Since ground is not referenced by the data lines having common grounds or ground...
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Forum: CAN
02-06-2012, 09:26 PM
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Replies: 3
Views: 1,272
Re: Magic 2CAN
This is correct and also the case with the Jaguars. The grounds are common through the CAN cable. This should not affect performance. There are some thoughts that suggest having a ground return...
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Forum: CAN
02-04-2012, 05:18 PM
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Replies: 10
Views: 2,002
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How about "The 2007 FIRST Robotics Competition International World Championship Event Of Atlanta Consisting Of Competition, Gracious Professionalism, Robots, And Geeky Fun"? Somehow I doubt it will catch on... - raymaniac [more] 
