Hello,
I saw the link you posted on Universal Controller from Bart Drings.
...
Thank you for this info. I am going another route as I do not know anything
about GRBL as of today.
Seth
P.S. I tried GRBL a while back w/ the BBB but came up empty. Anyway, I will
keep up w/ my promotion of
Maybe consider something like Bart Drings - Universal Controller
- https://www.youtube.com/watch?v=IMwXUbWLic0
For anyone considering using SPI to a light weight step generator on
standard 3D printer hardware, take a look at Remora project -
docs
Hello,
Are people still staying interested in an add-on Cape for the BBB/BBAI with
many input/output channels for Servos/Steppers? I have not put anything
together myself. I like the idea of Open Source being relevant now and in
the future for people like me who tend to not know everything but
>
> EtherCAT is used extensively in industry, a signification number of the
> CNC controllers now only support EtherCAT servos and IO.
>
> The cost of using EtherCAT for CNCs has dropped significantly in the
> last 5 years with a number of smaller suppliers of servo hardware
> producing
>
>
> BeagleBone AI uses AM5729, which in contrast to the one used in BBB should
> have a Ethercat slave support. You can then use the PRU for exchange of
> Ethercat messages and create distributed, multi-node system (multi
> Machinekit instances).
>
I didn't realize that, looking into it it
Hi All
On 25/6/20 9:23 am, justin White wrote:
> Linuxcnc has a hal driver for ethercat master as it doesn't require
> any special hardware. Ethercat slaves AFAIK require an ASIC and it's
> pretty expensive. I hear alot of talk of ethercat but rarely see it
> actually used in industry. I don't
Jun 25, 2020, 01:53 by blazin...@gmail.com:
> Linuxcnc has a hal driver for ethercat master as it doesn't require any
> special hardware.
>
There was support for quite some time now, that's not the problem.
>
> Ethercat slaves AFAIK require an ASIC and it's pretty expensive.
>
Ethercat slave
Linuxcnc has a hal driver for ethercat master as it doesn't require any
special hardware. Ethercat slaves AFAIK require an ASIC and it's pretty
expensive. I hear alot of talk of ethercat but rarely see it actually used
in industry. I don't know the status of the hal ethercat driver in MK but
Hi,
Jun 23, 2020, 20:45 by jkrid...@beagleboard.org:
> On Thu, Mar 12, 2020 at 7:14 PM justin White <> blazin...@gmail.com> > wrote:
>
>>> On Thursday, March 12, 2020 at 6:32:52 PM UTC-4, Chris Albertson wrote:
>>>
Isn’t that something the Beagle is strong at with the eQEP and PRUs?
>>>
On Thu, Mar 12, 2020 at 7:14 PM justin White wrote:
> On Thursday, March 12, 2020 at 6:32:52 PM UTC-4, Chris Albertson wrote:
>
> Isn’t that something the Beagle is strong at with the eQEP and PRUs?
>>>
>>
>>
>> Strong only until you hit up against the limited number of I/O pins. A
>> PRU based
I have a real engineering question. In real life, is the redundant path
actually used?
If I owned a system that had a redundant path, I would place an alarm on
the backup path and treat its use as a system failure. Maybe we finish the
current operation while in alarm state but this is not the
Hello,
Sorry if I came out rude, that was not my intention.
As for BBB and EtherCat, if you use the ”standard” one with a LAN port you
dont need a cape at all, assuming that you would be able to sacrifice the
ring topology. Running it headless and using a usb wlan, you would be able
to keep the
The BBB would be the master for my use case, with devices such as
servomotor drivers as slaves in a dual-redundant topology. I use the BBB
Wireless, and thus don't have the onboard RJ-45.
The other industrial connections would also be necessary, particularly in a
push-connector form factor,
Hi,
Jun 9, 2020, 22:25 by juha.hei...@gmail.com:
> Hmm out of curiosity why would you require 2 separate EtherCat ports or is it
> just for a ring topology?
>
> If you can settle for just one, you could run the igh EtherCat master stack
> on the BBB and use available LAN port. So if one is
Hmm out of curiosity why would you require 2 separate EtherCat ports or is
it just for a ring topology?
If you can settle for just one, you could run the igh EtherCat master stack
on the BBB and use available LAN port. So if one is enough, no need to
mixup the cape with the EtherCat stuff.
I think the issue is always that the requirements with these machines are very
different and that you never quite get what is needed.
When I build the cape I use on my lathe I sort of used a modular design. I
based this on a prototype cape and used those small optocoupler and level shift
Hi John
I won't be using the BBB to drive either my mill or lathe as I'm very happy
with what I've got, and have made good quality parts with them for many
years.
What I bought it (the BBB) for was for some other robotic projects.
I've flashed it with Machinekit so that I can test the
From: 'David benson' via Machinekit [mailto:machinekit@googlegroups.com]
Sent: May-05-20 1:08 AM
To: Machinekit
Subject: Re: [Machinekit] Seeed to design and build Machinekit focused Cape for
BeagleBone Black/AI
On Wednesday, March 18, 2020 at 11:12:49 PM UTC+11, Jason Kridner wrote:
On Wednesday, March 18, 2020 at 11:12:49 PM UTC+11, Jason Kridner wrote:
>
> I think we have to reliably enable hobby-class machines first. Now, some
> people take hobby pretty far and I'm not trying to cap this off too small,
> I just don't want to boil the oceans. I'd say if we can do a bit
From: machinekit@googlegroups.com [mailto:machinekit@googlegroups.com] On
Behalf Of justin White
Sent: March-18-20 5:24 PM
To: John Dammeyer
Cc: Machinekit; beaglebo...@googlegroups.com
Subject: Re: [Machinekit] Seeed to design and build Machinekit focused Cape for
BeagleBone Black/AI
Wow
Wow that has absolutely nothing to do with seeed's cape.
On Wed, Mar 18, 2020, 7:37 PM John Dammeyer wrote:
> Would someone perhaps be able to describe simply (like MachineKit for
> Dummy's) how exactly the step pulse and direction shows up on the Beagle
> pin relative to the motion command
Would someone perhaps be able to describe simply (like MachineKit for Dummy's)
how exactly the step pulse and direction shows up on the Beagle pin relative to
the motion command from a G00 X1.0 where current X position is 0.0.
Clearly we accelerate and move and then decelerate to arrive at the
I think we have to reliably enable hobby-class machines first. Now, some
people take hobby pretty far and I'm not trying to cap this off too small,
I just don't want to boil the oceans. I'd say if we can do a bit more than
what CRAMPS can do today, we should.
Personally, I'd want to at least be
This depends a lot on what sort of machine you're trying to drive. A
"standard" CNC machine with step/dir typically needs a DB25 (aka:
parallel port) with buffered signals you can connect to external stepper
drivers. A 3D printer would more typically have low-powered "Pololu"
style drivers
From: machinekit@googlegroups.com [mailto:machinekit@googlegroups.com] On
Behalf Of Bas de Bruijn
Sent: March-13-20 6:47 AM
To: Jason Kridner
Cc: machinekit@googlegroups.com; beaglebo...@googlegroups.com
Subject: Re: [Machinekit] Seeed to design and build Machinekit focused Cape
I would use a cape who can drive DC and BLDC motors with encoder feedback. and
has room for 24V I/O thru screw terminals.
A motor such as these types (just an example, maybe different capes for
different power ratings) which would make creating tools for industrial
situations much, much
he array and when and how.
John Dammeyer
From: machinekit@googlegroups.com [mailto:machinekit@googlegroups.com] On
Behalf Of John Dammeyer
Sent: March-12-20 4:59 PM
To: 'Machinekit'
Cc: beaglebo...@googlegroups.com
Subject: RE: [Machinekit] Seeed to design and build Machinekit focused Cape
[mailto:machinekit@googlegroups.com] On
Behalf Of Chris Albertson
Sent: March-12-20 3:33 PM
To: Jason Kridner
Cc: Machinekit
Subject: Re: [Machinekit] Seeed to design and build Machinekit focused Cape for
BeagleBone Black/AI
Isn’t that something the Beagle is strong at with the eQEP and PRUs?
Strong
>
> On Thursday, March 12, 2020 at 6:32:52 PM UTC-4, Chris Albertson wrote:
Isn’t that something the Beagle is strong at with the eQEP and PRUs?
>>
>
>
> Strong only until you hit up against the limited number of I/O pins. A
> PRU based solution is cheap and simple but can't scale.
>
> In
>
> Isn’t that something the Beagle is strong at with the eQEP and PRUs?
>
Strong only until you hit up against the limited number of I/O pins. A PRU
based solution is cheap and simple but can't scale.
In general TI's idea to place a small microcontroller on the same chip as
their ARM Cortex-A
On Thu, Mar 12, 2020 at 5:09 PM Chris Albertson
wrote:
>
>
> On Thu, Mar 12, 2020 at 11:47 AM Jason Kridner wrote:
>
>> If you are putting a fast processor on the main board, what is the Beagle
>> doing?
>>
>
> The Beagle is running the servo loop, g-code interpeter, motion planning,
> and the
On Thu, Mar 12, 2020 at 11:47 AM Jason Kridner wrote:
> If you are putting a fast processor on the main board, what is the Beagle
> doing?
>
The Beagle is running the servo loop, g-code interpeter, motion planning,
and the user interface. Step-gen and quadrature decoding are done on the
xis for power feed. Six monts later the Y axis for
> power feed. Then a year later the Z axis for power feed. When they
> swap in a 3 phase or AC servo motor onto the spindle they suddenly have
> on/off speed control and now the potential to add simple CNC operations. Some
> of those could even be l
Seeed is looking to not only build a Machinekit-focused Cape for BeagleBone
Black and BeagleBone AI, but to:
* Take in features and feedback from the community
* Contribute the design to open source and certify it as such
* Manufacture the design under the BeagleBoard.org name to support the
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