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-   -   Driver Station Voltage Burnout (http://www.chiefdelphi.com/forums/showthread.php?t=132495)

thetonio96 09-01-2015 16:15

Driver Station Voltage Burnout
 
Does someone know what Voltage Burnout message mean on the new Driver Station 2015?

cgmv123 09-01-2015 16:21

Re: Driver Station Voltage Burnout
 
Assuming it says "brownout" and not "burnout", at some point, the RoboRIO input voltage was below ~7 volts.

Ozuru 13-01-2015 22:43

Re: Driver Station Voltage Burnout
 
I had this occur when stress testing our motors and control system.

A brownout occurs when it goes below roughly seven(?) volts and has a high risk of crashing your system and dropping the roboRIO. If you want to check this out, make your CIM motors reverse polarities very quickly and you'll see what I mean.

Jacob Bendicksen 13-01-2015 23:39

Re: Driver Station Voltage Burnout
 
We had some interesting experiences with the beta hardware when we were testing the brownout characteristics - it's worth it to try to get a brownout (put in a low battery, push a wall or something) to see what drops out first. Also, if your robot design raises the possibility of a brownout (if you have a lot of motors pulling a lot of power), think about what will happen if a brownout does occur - the solenoids do some weird things, which could potentially be unsafe.

GatorRobotics 30-01-2015 12:15

Re: Driver Station Voltage Burnout
 
Our Driver Station is showing Voltage Brownout, and we can't figure out what is causing it. We have disconnected everything from the power distribution except for the RoboRIO, and still get the error. Has anyone had this problem? If so, any remedies?

notmattlythgoe 30-01-2015 12:16

Re: Driver Station Voltage Burnout
 
Quote:

Originally Posted by GatorRobotics (Post 1436098)
Our Driver Station is showing Voltage Brownout, and we can't figure out what is causing it. We have disconnected everything from the power distribution except for the RoboRIO, and still get the error. Has anyone had this problem? If so, any remedies?

What is the driver station reporting the battery voltage as?

Mark McLeod 30-01-2015 12:26

Re: Driver Station Voltage Burnout
 
Possible causes:
  • Low battery (test with meter or use Driver Station readout)
  • Poor connections between the battery and the PDP (test with meter)
  • Heavy draw or short on circuit off PDP (pull breakers)
On the right of the Driver Station is a button "Logs..."
Click on it and you will be able to browse past data logs made while your robot was running.

One of the plotted lines is your battery voltage and orange marks at the top show when Battery Brownouts occur.

You can correlate the dips in battery voltage to the occurrence of brownouts.

RoboRIO Brownout and Understanding Current Draw

GatorRobotics 30-01-2015 14:16

Re: Driver Station Voltage Burnout
 
23.+ is the voltage showing on the DS. I think we may have figured it out. We had the RoboRIO connected to a 24V output on the Power Distribution Board, we switched it to a 12V and it works. Small oversight on our part. :eek:

Addison4300 30-01-2015 14:21

Re: Driver Station Voltage Burnout
 
This happened to us. we were driving tank style and had one set of wheels going forward and the other going backwards. we were using the regular basic wheels. the strain from the friction of the floor was too much and cause us many brownouts while turning. so basically what i'm saying is too much strain on the motor will cause it.

cgmv123 30-01-2015 14:25

Re: Driver Station Voltage Burnout
 
Quote:

Originally Posted by GatorRobotics (Post 1436180)
We had the RoboRIO connected to a 24V output on the Power Distribution Board

You're using the old PDB? The new PDP doesn't have a 24 volt supply.


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