On Fri, Oct 29, 2010 at 05:21:04PM -0500, Igor Chudov wrote:
>
> I will try to find a couple of extra laptop style power supplies that
> fit it, and hope that this server will last me many years.
If it should also be reliably up, or at least be able to be brought down
gracefully in the event of power failure, a cheap UPS can be built in to
the host, if a PicoPSU is used, as suggested upthread.
Having bought a PicoPSU with each of two mini-ATX boards, I've
interposed a spare 12v SLA battery on one, and cobbled up a 13.8v power
supply to keep it charged. (So that UPS involved no expenditure.)
A UPS seems useful on a EMC2 host? We have occasional fleeting power
interruptions here. I'm not keen on power flicking off three times in
five seconds, then staying on, in the middle of a job. It has to be
better for EMC2 to remain conscious, even if it is best to trigger an
estop. The encoders can be powered by the UPS, so we don't lose
position. (With summer looming, I'm nervous about power interruptions.
Last summer I was once the only hardware-store customer in a checkout
queue of four, _not_ walking out with an airconditioner on a trolley.)
Erik
--
Never worry about theory as long as the machinery does what it's
supposed to do.
-- Robert A. Heinlein
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