[Server-devel] [XSCE] Re: Cubox Solidrun Prototype Packaging

[Jon Nettleton]

According the their website it is 1.5A max
http://www.ianker.com/support-c1-g228.html which would put us at 10 hours
for a full recharge, without draw on it.  Again this isn't a tradition UPS,
but something that we can put to use because of the low draw of our server
:-)

I am sure the 5volts can be provided by either an AC -> 5volt DC coverter
or a 12 volt to 5 volt DC converter.  I have a 12volt to 5volt 3amp
converter in my car that can charge two modern cell phones.  Those
electronics are pretty cheap thanks to smart phones.

Until I know what drives we are using most of this is speculation.  The
IMX6 SOC has very intricate control over the power states of the hardware.
 If we know we are in a battery use situation we can limit the number of
cores powered on and various other things.  Out of the box we are doing
dynamic frequency scaling and various cpu idle states to minimize power
usage.

I don't believe there is anything out of the box that will tell us we are
on battery power.  However the cubox-i does have an IR input.  Perhaps
replacing the LED notification lights on the battery pack with an IR
emitter could work for us?  I am not sure what the Cubox-i has inside for
GPIO, I don't think much.  That is why switching to custom boards in the
future would give us a bit more flexibility.


On Sat, Jan 4, 2014 at 6:30 PM, Tim Moody <tim at timmoody.com> wrote:

>   this is a nice idea.  the input says 5V 1A max and we want to supply 5V
> 2A for 7.5 hours.  does this mean we need another 15 hrs for charging?  how
> do we supply the 5V input, from AC or 12V.
>
> of course it would be nice if we could sense the charge level in the
> charger device and shutdown when it is low.  I know that is one of George’s
> pet projects.
>
> are there low power states we can put the drive (spin down) and the cubox
> (sleep) into?
>
> Tim
>
>  *From:* Jon Nettleton <jon.nettleton at gmail.com>
> *Sent:* Saturday, January 04, 2014 12:14 PM
> *To:* Tim Moody <tim at timmoody.com>
> *Cc:* George Hunt <georgejhunt at gmail.com> ; XS Devel<server-devel at lists.laptop.org>;
> xsce-devel <xsce-devel at googlegroups.com>
> *Subject:* [XSCE] Re: Cubox Solidrun Prototype Packaging
>
>  A quick look on NewEgg and this looks just about perfect.
>
> http://www.newegg.com/Product/Product.aspx?Item=0ZA-0007-00007
>
> 1 5volt 2.1 amp output for the cubox-i and then a second 1amp 5volt output
> for the drive.
>
> Or for super large
>
>
> http://www.amazon.com/15000mAh-Portable-Ultra-High-Capacity-External/dp/B00D5T3QK4/ref=sr_1_1?ie=UTF8&qid=1388855388&sr=8-1&keywords=anker+astro
>
> That is a 15000mAh battery.
>
> That means that we can run at 2 amps for about 7.5 hours on battery.  Not
> too bad.
>
>
> On Sat, Jan 4, 2014 at 6:05 PM, Jon Nettleton <jon.nettleton at gmail.com>wrote:
>
>> All we need is 5volt DC in, preferably 2amps minimum.  If the drives
>> aren't too power hungry then they should be able to be powered by the
>> eSATAp connector, although I haven't tested that.  I will actually ask
>> Rabeeh if he has tested it.  I know he has tested eSATA just don't know if
>> it was self powered.  If we can't get eSATA to power the drive for whatever
>> reason then a USB port should be possible.  A lot of older eSATA cases
>> would require a usb plug for power, if they didn't support eSATAp.
>>
>> Most of this depends on the draw of the drives.  If we want a battery
>> backup solution then we probably want the larger case I posted a link to
>> earlier and then a battery solution that provides two 5volt 2amp outputs.
>> I am pretty sure I saw one on Amazon.
>>
>> Do you guys have the models of drives you plan on using for storage?
>> Time to run some numbers.
>>
>
>
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