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Unread 22-02-2014, 14:12
NotInControl NotInControl is offline
Controls Engineer
AKA: Kevin
FRC #2168 (Aluminum Falcons)
Team Role: Engineer
 
Join Date: Oct 2011
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Location: Groton, CT
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Re: 12V Voltage on Robot Frame (Perhaps because of a BaneBot)

Quote:
Originally Posted by Dan252 View Post
I don't remember :/ I'll check it first thing tomorrow


Yes


Only when enabled (even if no motors are actually running). - Which may hint that there is another short somewhere?


Tomorrow i'll be in the workshop and post those.

Thanks for helping


Not a problem.... three more question to check once you get back to your robot.

When you have comm issues, are the lights on the dlink do anything (turn off, go red, or are they always blue?

Are you running tethered, AP, or Bridge?

On the driverstaion, are you noticing any errors in the user message box? (watchdog timers etc.)

As for diagnosing your short:
If without the motor connected to the robot, you still have intermittant comms, or a short to the frame.

The fastest way to run through the circuits, is to pull all of the breakers on the power distro board. Also unplug power to your digital side card, analog, and solenoid card. Turn the robot on, and check continuity between the frame and the PD board.

Plug in each breaker one by one and run the check until you find the circuit that is causing the short. After running through the breakers, add power to the analog, digital, and solenoid cards one by one, and perform the continurity checks again.

If you notice the short after plugging in one of the CRIO cards, then that narrows your search down, to the electrical components connected to that card.

If even with all breakers and cards unplugged you still have a short, then only what is still being powered is causing your short. your PD board, CRIO, or Dlink, main breaker etc.

Hope this helps,
Kevin
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Controls Engineer, Team 2168 - The Aluminum Falcons
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[2014 Season] - NE Championship Controls Award & Semi-finalists, District Controls Award, Creativity Award, & Finalists
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Last edited by NotInControl : 22-02-2014 at 14:17.