for those interested because of 2nd ethernet
this maybe useful:
a pinout of the header used
and small discussion of the needed isolation trafo 'magjack'
https://forum.pine64.org/showthread.php?tid=4898
also, re rt-preempt 64 bit on it...
i see dev 'schooner' has done this
" |root@pine64:~#
>https://lists.sourceforge.net/lists/listinfo/emc-users
On Wed, 27 Mar 2019 at 09:40, Greg Bentzinger via Emc-users
wrote:
> One great feature that Ultimax included was that it savedthe part setup
> offsets, parameter table and all the tool data with each partprogram. The
> tool data included cutter geometry type, cutter dia., cutter materialtype,
( list apology, I seem to have replied to posters rather than to the
list, and several times :-(
re SPI comms Linuxcnc SBC microcontrollers ...
it has been said on this mail list,
that SPI is a good candidate for a bus technology to work _with_ realtime.
heres some work in that vein (maybe
On Wednesday 27 March 2019 08:12:48 TJoseph Powderly wrote:
> ( list apology, I seem to have replied to posters rather than to the
> list, and several times :-(
>
> re SPI comms Linuxcnc SBC microcontrollers ...
>
> it has been said on this mail list,
> that SPI is a good candidate for a bus
On Wed, 27 Mar 2019 19:12:48 +0700
TJoseph Powderly wrote:
> ( list apology, I seem to have replied to posters rather than to the
> list, and several times :-(
>
> re SPI comms Linuxcnc SBC microcontrollers ...
>
> it has been said on this mail list,
> that SPI is a good candidate for a bus
What makes SPI nice is not it's speed. On the Pi it can go up to 250 MHz,
so Ethernet beats it for speed and Ethernet cables can be 100 meters long.
SPI wins because it is fast enough for most things and is very simple,
just connect the wires. But it only works over a short distance. But it
We are making progress...
On 3/27/19 11:16 AM, Chris Albertson wrote:
What makes SPI nice is not it's speed. On the Pi it can go up to 250 MHz,
so Ethernet beats it for speed and Ethernet cables can be 100 meters long.
SPI wins because it is fast enough for most things and is very simple,
> ...
> But if writing software you should not have to decide of lock in a certain
> communications method. I like whatht ehauthors is ros-serial did, that
> w=said "Use any communications method that has these four fuctions: open,
> close, read, write. THat pretty much means anything from a
I think in this current context we are talking about distances of not much
more than 10 centimeters. The signal would go from a GPOI header to a
real-time controller like an FPGA or uP. In typical use cases, SPI and
I2C never leave the PCB and don't go over cables, although it could
On Wed, 27 Mar 2019 11:53:52 -0700
Chris Albertson wrote:
> I think in this current context we are talking about distances of not much
> more than 10 centimeters. The signal would go from a GPOI header to a
> real-time controller like an FPGA or uP. In typical use cases, SPI and
> I2C
On Wednesday 27 March 2019 14:03:33 Nicklas Karlsson wrote:
> On Wed, 27 Mar 2019 19:12:48 +0700
>
> TJoseph Powderly wrote:
> > ( list apology, I seem to have replied to posters rather than to the
> > list, and several times :-(
> >
> > re SPI comms Linuxcnc SBC microcontrollers ...
> >
> > it
While trying to get a reverse control over this POS, I noted that the
default was reversed, so I traded the 2 U & V wires to the motor to make
it run fwd.
This is toward the end of March, but as of this afternoon its default,
can't change it w/o moving UV again, is now its running bass
Rather than offload all the good stuff why isn't the kernel patching made
easier. There was a BDI at one time. It wasn't a bdi. It took professional
tweaking to make it run. Maybe a truly BDP for the kernel?
On Wed, Mar 27, 2019, 6:35 PM Alan Condit wrote:
> I pulled the trigger on a RockPro64
I pulled the trigger on a RockPro64 4gb this morning. The RockPro64 has the Mali
T860 gpu (supports OpenGL 3.2).
I have a Pine64 A64+ 2gb. Just a couple of days ago, I built a preempt_rt
kernel
for it running on armbian Stretch.
I cloned the raspberrypi/linux repository (it had the latest good
I've had reliable operation from Little Giant and Superior Electric
pumps as small coolant pumps. The small pumps are not expensive so
there is no excuse for skimping on quality in my opinion. Spindle
coolant is too important to take unnecessary risks on a pump of
questionable quality. I
On Wed, 27 Mar 2019 at 12:14, TJoseph Powderly wrote:
>
> ( list apology, I seem to have replied to posters rather than to the
> list, and several times :-(
>
> re SPI comms Linuxcnc SBC microcontrollers ...
>
> it has been said on this mail list,
> that SPI is a good candidate for a bus
I have an Eheim aquarium pump that has been running continuously for over
25 years! It is a canister model.
--J. Ray Mitchell Jr.
jrmitche...@gmail.com
(818)324-7573
"Good enough is the enemy of excellence"author unknown
On Wed, Mar 27, 2019 at 7:01 PM Chris Albertson
wrote:
> Yes, I've
Gene hello
On 03/27/2019 08:13 PM, Gene Heskett wrote:
On Wednesday 27 March 2019 08:12:48 TJoseph Powderly wrote:
( list apology, I seem to have replied to posters rather than to the
list, and several times :-(
re SPI comms Linuxcnc SBC microcontrollers ...
it has been said on this mail
Hello Gene
I always forget some context...
In my use of the RPi and SPI and stacking connectors ( there, that's the
context )
I have SPI devices connected thru the 40pin stacking header
so my paths are very short and solid.
Theres topological problems with the stacking connectors
but SPI
Yes, I've used aquarium pumps. the submersible pumps are good because
they eliminate a problem if there is a leak. All of them are magnetic drive
and water lubricated. The best pumps, I think are made by Eheim. Eheim is
a German company and you might expect one of their pumps to run continosly
Gene,
My local Lowes has fountain pumps from $20.00, to over $200.00. Most
of them are submersible, and run from 80gph, to over 800gph.
Back in the day, when overclocking computers started becoming a
thing, I've seen Little Giant submersible pumps used as coolant pumps.
They worked
On Thu, 28 Mar 2019 at 01:07, TJoseph Powderly wrote:
> My RIP source tree is DGarr's external offset branch.
>
> I dont have raspi.kp either.
>
> Where are these files?
He means hm2_rpspi
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of
On Wednesday 27 March 2019 16:39:10 Gene Heskett wrote:
> While trying to get a reverse control over this POS, I noted that the
> default was reversed, so I traded the 2 U & V wires to the motor to
> make it run fwd.
>
> This is toward the end of March, but as of this afternoon its default,
>
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