> > > > Yes they are that fast in some micro controllers. But on the "Pi"
> > they do
> > > > about 500K.
> > > Where did you get this value.
> > > In my case it runs at 16 MHz fullduplex.
> >
> > 16Mbit full duplex is common for cheap small micro controllers.
> >
>
> I don't understand. Are you
On Wed, Oct 26, 2016 at 8:35 AM, Nicklas Karlsson <
nicklas.karlsso...@gmail.com> wrote:
> > On 2016-10-26 08:39, Chris Albertson wrote:
> > > Yes they are that fast in some micro controllers. But on the "Pi"
> they do
> > > about 500K.
> > Where did you get this value.
> > In my case it runs at
The best way to backup a Pi based system is to set it up so a backup is
never needed. You write to the SD card once and save the image file. The
never wrote to the card again. You can replace the card from your
"standard" image file. These Pis will never have a large hard disk
attached to th
The little circuit board you envision that sits on top on the Pi. Would be
nice and easy to use. But there is not room on that size card for screw
terminals. You are talking about building a Mesa card that is less than
half the size of a Mesa card. Would be hard to do.
The way I like to do t
On Wed, Oct 26, 2016 at 12:11 AM, Gene Heskett wrote:
> This is touted to be 100% compatible with R-Pi stuff. But has an
> allwinner H3 brain, so it runs on intel code, not arm.
All Allwinner products are ARM:
https://en.wikipedia.org/wiki/Allwinner_Technology#H-Series_.28OTT_box_application.29
h
> On 2016-10-26 08:39, Chris Albertson wrote:
> > Yes they are that fast in some micro controllers. But on the "Pi" they do
> > about 500K.
> Where did you get this value.
> In my case it runs at 16 MHz fullduplex.
16Mbit full duplex is common for cheap small micro controllers.
It is cheap an
On 10/26/2016 12:36 AM, Gene Heskett wrote:
> On Wednesday 26 October 2016 00:42:02 Chris Albertson wrote:
>
>> On Tue, Oct 25, 2016 at 9:11 PM, Gene Heskett
> wrote:
>>> On Tuesday 25 October 2016 23:07:55 bari wrote:
>>>
>>>
>>> This is touted to be 100% compatible with R-Pi stuff. But has an
>>
We're running 72Mhz dual channel-DDR-QSPI on a little Cortex ARM =
1.152Gbit/s :) (FWIW, more for super low delay than raw data rate)
On Wed, Oct 26, 2016 at 9:12 AM, W. Martinjak wrote:
> On 2016-10-26 08:39, Chris Albertson wrote:
> > Yes they are that fast in some micro controllers. But on
On 2016-10-26 08:39, Chris Albertson wrote:
> Yes they are that fast in some micro controllers. But on the "Pi" they do
> about 500K.
Where did you get this value.
In my case it runs at 16 MHz fullduplex.
--
"In der Wissenschaft siegt nie eine neue Theorie,
nur ihre Gegner sterben nach und
On Wednesday 26 October 2016 01:36:00 Gene Heskett wrote:
> On Wednesday 26 October 2016 00:42:02 Chris Albertson wrote:
> > On Tue, Oct 25, 2016 at 9:11 PM, Gene Heskett
>
> wrote:
> > > On Tuesday 25 October 2016 23:07:55 bari wrote:
> > >
> > >
> > > This is touted to be 100% compatible with R
On 26 October 2016 at 00:32, Bruce Layne wrote:
> What I'd really like to see
> is a controller in the class of the Raspberry Pi with a stack-on
> daughter board for the FPGA motion control and general purpose I/O.
I think that you might want to consider the reverse, an FPGA motion
controller wit
On Tue, Oct 25, 2016 at 9:38 PM, Nicklas Karlsson <
nicklas.karlsso...@gmail.com> wrote:
> > I think SPI runs at 500 KHz. That is 50 times slower then Ethernet if
> you
> > look at only the bit rate. But what matters, I think more is the time
> it
> > takes to send one message. It might (mayb
On Wednesday 26 October 2016 00:42:02 Chris Albertson wrote:
> On Tue, Oct 25, 2016 at 9:11 PM, Gene Heskett
wrote:
> > On Tuesday 25 October 2016 23:07:55 bari wrote:
> >
> >
> > This is touted to be 100% compatible with R-Pi stuff. But has an
> > allwinner H3 brain, so it runs on intel code, n
On Wednesday 26 October 2016 00:21:37 Chris Albertson wrote:
> I think SPI runs at 500 KHz. That is 50 times slower then Ethernet if
> you look at only the bit rate. But what matters, I think more is the
> time it takes to send one message. It might (maybe?) be faster on
> SPI because you avo
The Allwinner H3 is a quad core ARM processor... not intel. While the
orange Pi claims 100% compatibility with the raspberry Pi add-ons there
are reports of a few incompatibilities. Also note that it does have a
different graphics core and I think a different ethernet core as well
and not all of th
On Tue, Oct 25, 2016 at 9:11 PM, Gene Heskett wrote:
> On Tuesday 25 October 2016 23:07:55 bari wrote:
>
>
> This is touted to be 100% compatible with R-Pi stuff. But has an
> allwinner H3 brain, so it runs on intel code, not arm. Its all ordered
> now Bari, so we'll find out I guess.
>
The All
> I think SPI runs at 500 KHz. That is 50 times slower then Ethernet if you
> look at only the bit rate. But what matters, I think more is the time it
> takes to send one message. It might (maybe?) be faster on SPI because you
> avoid the TCP/IP stack. With SPI your software is driving the ba
> The appeal of consumer products is that they can be much cheaper than
> industrial or custom products. Using a PC, and parallel port card with
> LinuxCNC can make for a very affordable machine controller, but I am
> always on the lookout for other options. Embedded processor cards are
> popul
I think SPI runs at 500 KHz. That is 50 times slower then Ethernet if you
look at only the bit rate. But what matters, I think more is the time it
takes to send one message. It might (maybe?) be faster on SPI because you
avoid the TCP/IP stack. With SPI your software is driving the bare
hardw
On Tuesday 25 October 2016 23:07:55 bari wrote:
> @Gene
>
> Not sure how well SPI works on the Orange Pi. Since you've decided on
> the 7i90HD with SPI why don't use use the Rpiwith it?
>
> Orange Pi board, Ethernet > 7i92, hm2_ethdriver
>
>
> Rpi board, SPI >7i90, hm2_raspi driver
This
The surplus PC is only cheaper if it is indeed surplus. I just got two
for free.A free quad core I7 is the most compute power per dollar I'm
likely to find.
But for other applications I need a smaller physical size and low enough
power to run on batteries. Low cost is a nice plus if I can g
On Tuesday 25 October 2016 21:52:08 Gene Heskett wrote:
> On Tuesday 25 October 2016 21:03:51 W. Martinjak wrote:
> > On 2016-10-25 23:10, Kirk Wallace wrote:
> > > So, I'm back to piecing together some sort of beagleduino
> > > thing if I want a pad class controller.
> >
> > OK, then let me promo
@Gene
Not sure how well SPI works on the Orange Pi. Since you've decided on
the 7i90HD with SPI why don't use use the Rpiwith it?
Orange Pi board, Ethernet > 7i92, hm2_ethdriver
Rpi board, SPI >7i90, hm2_raspi driver
On 10/25/2016 08:52 PM, Gene Heskett wrote:
> On Tuesday 25 Octobe
On Tuesday 25 October 2016 21:03:51 W. Martinjak wrote:
> On 2016-10-25 23:10, Kirk Wallace wrote:
> > So, I'm back to piecing together some sort of beagleduino
> > thing if I want a pad class controller.
>
> OK, then let me promote my hm2_raspi driver.
>
> https://forum.linuxcnc.org/27-driver-boa
On 2016-10-25 23:10, Kirk Wallace wrote:
> So, I'm back to piecing together some sort of beagleduino
> thing if I want a pad class controller.
>
OK, then let me promote my hm2_raspi driver.
https://forum.linuxcnc.org/27-driver-boards/31753-raspberry-pi-and-mesa-7i90-spi-works-well#82070
You may
On 10/25/2016 05:10 PM, Kirk Wallace wrote:
> the hardware inside is radio hardware, so the main board would be wasted on
> a machine controller
A lot of people like to listen to music or talk radio in the shop. Maybe
that radio hardware is not a waste after all. :-)
I need a dual core contro
The appeal of consumer products is that they can be much cheaper than
industrial or custom products. Using a PC, and parallel port card with
LinuxCNC can make for a very affordable machine controller, but I am
always on the lookout for other options. Embedded processor cards are
popular now, bu
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