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Unread 22-11-2011, 07:01
Joe Johnson's Avatar Unsung FIRST Hero
Joe Johnson Joe Johnson is offline
Engineer at Medrobotics
AKA: Dr. Joe
FRC #0088 (TJ2)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 1996
Location: Raynham, MA
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[DFTF] Jags v. Vics...

This is part of a series of posts called Drinking From The Firehose on getting Dr Joe back up to speed on All Things FIRST.

Today's topic:
Jags v. Vics

I know I risk of starting a flame war, but it has to be asked.

Victors or Jaguars?

I have asked a lot of folks and here is what I have been able to find so far:
  • Size: Victors Win
  • Cost: Victors Win ($89 vs. $119 -- though I think there is a discount for FIRST teams, even after the discount, I think Victor remains lower cost)
  • Reliability: Victors seem to have the public on this one, but it is not clear if this data is tainted by "the early years" of the Jaguars
  • Smarter: Jaguars have an enormous brain inside that larger package -- not sure what that buys you in FIRST circles because we are limited in what we can do with it but it is there. Also can be a negative because some say the controller resets in some cases and causes flaky behavior (forgetting PID controls and otherwise going insane)
  • More Features: e.g. Sensor and Switch Input, PID control (without the main controller even in the loop), current readings baked in (if you use CAN)
  • CAN interface: pro and con for Jaguar - CAN can be better but the implementation has caused some problems (blocking controller code from running in some cases)
  • Over Current Protection: Jaguars have baked in self protection (60A for 2 sec, 100A for 0.2 sec). Blessing and a curse. We already have a circuit breaker so we are double fusing in a sense but at the same time, not letting the electronics fry seems like a good idea too.
Over all, I think I am in the Jaguar camp because I am excited to implement some of the features available via CAN but I want to hear other input.


Thanks all,
Joe J.
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