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Unread 27-06-2016, 08:55
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AKA: Gus Michel II
FRC #3946 (Tiger Robotics)
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Re: Rules Change I Would Like to See - Batteries

Quote:
Originally Posted by Michael Hill View Post
I would suggest against a USB converter because you're really only guaranteed 500 mA. ... The power is often really ugly ...
Many of the 12V converters feature a 2.1A port and a 1.0A port, which is enough for a pi. You can always add a couple of capacitors (it's a custom circuit) to clean it of if necessary. Our preferred method is still the VRM or other robust, regulated DC-to-DC converter. Jaci's bottom line is right on the money:

Quote:
Originally Posted by Jaci View Post
FRC Robots have a pretty big supply of power going to them as is, do we really need more?
Remember, in addition to the battery, we can (in most recent years, anyway) have pre-charged pneumatics tanks, pre-wound springs, and gravitational potential energy. (R35 A, C, and B respectively in 2016.)

Finally, If you really want that separate USB battery-power, charge up an old laptop, and power your pi off its USB port. There's no rule that says you have to turn the laptop on, much less do any processing on it. If you can use a classmate from a KoP, you won't even have to list any dollar cost in the BoM.
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