On Thu, 20 Jul 2017 23:48:22 -0500 Jon Elson <el...@pico-systems.com> wrote:
> On 07/20/2017 07:19 AM, Les Newell wrote: > > From what I research I have done the Raspberry is more > > than a little problematic. The Beagle Bone seems to be the > > board of choice for Machinekit. I looked into this and > > came to the conclusion it is too much work for no real > > gain. You can get small Intel based boxes pretty cheap > > these days. I/O tends to be limited but you can use a Mesa > > Ethernet based I/O board. Many come with a mini PCIe slot > > and you can get mini PCIe to PCIe or PCI adapters quite > > easily. For instance on my lathe I use one of these > > adapters to run an old 5i20 PCI card. I am using a quad core right and it does not run perfect but I have a small older dual core and it seems to run almost perfect. The small dual core I bought used a few years ago for around $30. > > > One big advantage of the Beagle Bone is it has the PRU > processors (a pair of 200 MHz 32-bit microcontrollers with > shared memory to the ARM CPU). Charles Steinkuehler has > written a program for these that implement encoder counters, > step generators and PWM generators. The configuration of > these can be done through Hal commands. He was aiming it > mostly at 3D printers, but it is pretty flexible. I make > the CRAMPS board (designed by Charles) that mounts up to 6 > Pololu-style stepper drivers plus 6 PWM outputs, temp sensor > inputs and limit switch inputs right on top of the Beagle > Bone board. it is about 3" square. So, the entire system > fits in the palm of your hand. You can ssh -X into it, or > hook up a screen via XDMI. Or use USB to network in. I have been thinking about the beagle bone as a real time computer but still want an ordinary computer as a user interface and this. ------------------------------------------------------------------------------ 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
