On Thursday 03 May 2018 00:56:41 Chris Albertson wrote: > Yes, the Begal Board Black (BBB) has much lower general CPU > performance compared to the Raspberry Pibut MUCH better IO performance > especially with those on-chip PRUs. > > But still if you have a garage to store the computer and AC mains > available for power why care about a few cubic inches and 20 watts of > power? Gene suggested an Intel Atom based PC. Those work. But I > find that one can buy Dell server that has come off lease. These can > come in 1U size chassis which is very compact. Prices are very low > and you get a full computer with power, chassis and so on. Smaller > than a tower but still typically space for a PCIe card. Newegg.com is > a reliable source, a top their retailer but eBay might have lower > prices. I've seen a usable rack mount server go for $100.
I've bought a couple old dell optiplex's, both desktops that can stand on end, that have run LinuxCNC very well, for under a hundred dollar bill from pcliquidaters.com, who are now showing stuff as low as $55. Plenty of power, good video, and with a $40 64G SSD for a drive, its quite a bit faster than it was with a 2T spinning rust drive in it. Only 64GB doesn't cramp it, df says 29% used. Neither does the only 2GB of ddr2. Works fine. Dual core Pentium D running at 3.4GHz. > My main development PC is a used HP workstation, 12-core Xeon, 64GB > RAM Nvidia GPU for about $550. The leasing companies have thousand of > these and they have to dump them into a market where world wide PC > sales is declining year to year. > > On Wed, May 2, 2018 at 7:17 PM, Jon Elson <el...@pico-systems.com> wrote: > > On Wednesday 02 May 2018 11:16:29 jeremy youngs wrote: > >>>>> Given my issues with this computer I have decided to stop > >>>>> beating a dead horse. I'm going to rpi 3 this thing. > >>>> > >>>> Oh, one other option is the Beagle Bone. This has the option of > >>>> using > > > > the PRU (programmable Realtime Unit) which is a 32-bit 200 MIPS > > microcontroller to do step generation. The Machinekit fork of > > LinuxCNC supports this. There is the CRAMPS board (disclaimer - I > > sell these) that puts 6 small stepper drivers and other I/O right on > > top of the Beagle Bone for a VERY compact system. You can net into > > the Bone with either Ethernet or USB, or connect a keyboard and > > mouse via USB and a monitor via mini-HDMI. > > > > Jon > > > > > > > > ------------------------------------------------------------ > > ------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users -- 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> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
