Re: causes for this?
On Monday 25 June 2018 05:26:41 Luke Kenneth Casson Leighton wrote:
> crowd-funded eco-conscious hardware:
> On Sun, Jun 24, 2018 at 3:57 PM, Gene Heskett <firstname.lastname@example.org>
> > I will try to remember that s35xx intel.
> > Unforch, that search at newegg comes back empty today.
> currently up to version "S3520"
> > The 3rd one I just put on the pi, an SP 60GB thats now 24 bucks,
> > with a $10 usb-3<->sata adapter plugged into a usb-2 port on the pi,
> > seems to be ok so far. Yeah, that faint knocking sound is real but
> > my knuckles are getting tender. :)
> if you're setting up a cluster of ultra-low-cost machines with
> distributed redundancy then pffh who cares if even 10% of the machines
But that doesn't describe what I want to do. The pi3b runs from a u-sd,
which is slow as hell. I put the 60GB Silicon Power on it to get what I
hope is going to be a faster storage for building a new rt-kernel in a
reasonable time, like under 24 hours. In any event, the usb-2 interface
is going to represent the biggest speed limit. But all it has to do is
work error free at the available speed.
The pi 3b has plenty of power to run this lathe as its spi driver can
send a 32 bit packet of data over the spi bus to the interface card at
41 megabaud, and read the cards response at 25 megabaud. This data, like
the wifi data, does NOT have to pass thru the internal usb-2 pinhole
that all the rest of the i/o has to get thru too. If it survives that,
then the one fairly volatile data directory for LCNC might get moved to
it, further enhancing the life of the u-sd card.
I've already had one of these SP 60GB drives in a Dell running a 4 axis
milling machine for about a year. The diff in speed makes a whole new
machine out of an old Dell with a P4 processor in it. So far, zero
problems. One 300 LOC file I'm still fine tuning, has probably been
rewritten 6000 times with the only errors being my own typu's. Some of
that is a fix if I can find a focus follows mouse and turn it on.
But thats a question for the TDE list.
Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>