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Unread 02-02-2011, 18:11
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Mark McLeod Mark McLeod is offline
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FRC #0358 (Robotic Eagles)
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Re: black jags not showing a solid yellow light

Quote:
Originally Posted by wjr1965 View Post
There are some other posts where teams are reporting issues with black jags that are not working. Any possibility that there is a production issue?
Extremely unlikely.

Take this as an engineering problem and run some numbers.

5,000 Black Jaguars were shipped to teams in the KOP.
More have been purchased through Digikey.

Production runs do have a standard error rate, probably less than 1%, and quality control would pick up on that.
That would mean ~50 Black Jags that might normally be expected to have problems. That would mean ~ 20-25 teams would normally be protesting that their jags aren't working.

So far we've heard only a very few teams out of 2077 complain.

We've seen nowhere near even the NORMAL number of complaints you'd expect with a less than 1% production error rate.

Luminary Micro published an error report after 2009 based on the number of units returned to them that you can checkout. The vast majority of the failures were due to usage, not out-of-the-box bad Jags. There were a few out-of-the-box bad Jags though, so don't be surprised if perfection isn't achieved.
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