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Unread 15-02-2011, 11:01
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Matt Krass Matt Krass is offline
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FRC #0263 (Sachem Aftershock)
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Re: Question from a ROOKIE Team

Quote:
Originally Posted by DavidGitz View Post
If they are blinking red that means the following:
a) The Jaguar is powered, so "probably" not a debris issue. Although the advice given above about making sure debris doesn't get anywhere is fantastic
That depends entirely on if it's a fast blink or a slow blink (am I the only one who dislikes different conditions being differentiated by blink rate? Though I suppose it would be better if we had a less subjective scale than "fast" and "slow")

If it's a fast blink, then you're probably not looking at debris, it's trying to drive the motor in reverse. You should only get this trying to drive in one direction.

If it's a slow blink, you're almost certainly looking at debris, the question is whether or not it is causing a transient problem or if your FETs have already fried.

Quote:
Originally Posted by DavidGitz View Post
If your connections are fine then "hotwire" your motor (please exercise safety)
This statement is an oxymoron.

Hotwiring motors is not a safe proposition, no matter how steady your hands are. There is a reason FIRST has us use circuit breakers and reliable connections, and it's not to cost people money or time, it's a SAFETY FEATURE.

I'm getting really sick of people advocating unsafe practices around here.

Matt
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Matt Krass
If I suggest something to try and fix a problem, and you don't understand what I mean, please PM me!

I'm a FIRST relic of sorts, I remember when we used PBASIC and we got CH Flightsticks in the KoP. In my day we didn't have motorized carts, we pushed our robots uphill, both ways! (Houston 2003!)