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Unread 06-03-2016, 19:10
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Re: Legality of running a capacitor inline with roboRIO power

Quote:
Originally Posted by ImOn3618 View Post
Hi, we've been having frequent brownouts through our whole robot, with the roboRIO being the first device to lose power. This happens primarily when we change directions rapidly, or get into a pushing match. In an effort to minimize input current spikes, we're considering adding a capacitor inline between the PDP out and the roboRIO power in.

Is this legal?

Will it help with the input spikes?
Is it legal? No. Custom circuits are not allowed to modify power paths.

Check to see if the RoboRio is plugged in to the correct spot (This is a boost-buck port so it is less affected by power spikes).

Next, look at the driver station dashboard. There should be a graph of the battery voltage. This should give you a hint as to where the issue is.

I suspect that your battery is low and you are using a high traction drive train with an incorrect gear ratio.
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