[Arm-netbook] Laptop Housing Questions
Luke Kenneth Casson Leighton
lkcl at lkcl.net
Mon Dec 19 21:56:03 GMT 2016
crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Mon, Dec 19, 2016 at 9:45 PM, Jonathan Frederickson
<silverskullpsu at gmail.com> wrote:
> Hey, I have a few questions about the laptop housing.
> - How does one connect it to power?
standard DC jack, anywhere between 7 and 19v.
> Can it be powered over USB
powered no, charged, yes. current limit on the OTG port.
> or does
> it require a specific AC adapter?
no. min 4A is best, but if you're prepared to reprogram the
STM32F072 yourself you could get away with less
> I have a portable solar array with a
> battery pack that can charge portable devices over USB, and I'm trying
> to work out whether or not I'll be able to power the laptop from it.
> - What's the average power draw of the laptop housing with an
> EOMA68-A20 card?
don't know. max is 15W
> If my rough calculations are correct, I think it
> should be around 6.25-8.3 W?
mmm LCD is around 4. if you play an audio file at full volume it'll
take another 3W.
> (Looking into CPU power specs has given
> me quite a bit of respect for Intel's engineers; it's amazing that
> modern laptops are able to do so much with so little power.)
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