Subject:
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Re: NXT powered by USB?
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 11 Jul 2006 06:54:33 GMT
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Viewed:
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2896 times
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In lugnet.robotics, Steve Hassenplug wrote:
> On Mon, July 10, 2006 12:45 pm, Jeff Garbers wrote:
> > Does anyone know whether the NXT brick can use USB-supplied power
> > rather than its own batteries while connected? It'd be nice during
> > experimenting and hacking, but I'd guess it doesn't...
>
>
> no, it doesn't. The motors would require much more power than you can draw from there.
Indeed, a single motor at full load draws more current (about 800mA at 9V) than
USB could supply (500mA at 5V).
What might have been possible (but probably involving a lot of added complexity
in power supply design for a limited advantage) would be to power the processor
and sensors from USB and motors from batteries...
Philo
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