Hi David,
Thanks for all the info.
I'm thinking that I can probably turn the Arduino nano into an inexpensive
interpolation engine to smoothly support high micro-step rates. The Mac client
would then be sending target position information and parameters for velocity,
acceleration, backlash and
Hi Bob;
Interesting that you should ask this question. I just got back from Cabin
Fever at which I attended a good course about CNC on PCs. At least in the
context of USB there is a lot of negativity with trying to do CNC control over
that port on Windows. Especially if you are attempting
devel-requ...@lists.macosforge.org wrote:
> Message: 3
> Date: Fri, 20 Jan 2012 12:43:46 -0800
> From: Rich Morin
> To: "MacRuby development discussions."
>
> Subject: [MacRuby-devel] CNC Machine control using USB to IEEE 1284
> Parallelport adapter
> Message-
Hi Rich,
Switch de-bounce logic in the Arduino would be a nice feature.
I'm thinking that probably I could offload most or all of the motion engine to
the Atmel µP. That would be desirable to to keep motors synchronized within a
half micro-step while doing linear and circular interpolation. Pro
Using a general-purpose OS (eg, Mac OS X) for real-time
applications is a bit of a tarpit. So, I like the idea
of using an Arduino (etc) for this sort of thing.
That said, there are some things that will cause problems
even in an Arduino. For example, taking raw input from a
switch or button may
Hi,
Thanks for all of the replies. I was looking for a Mac based CNC program long
ago and was amazed that there still is little or none. I don't have a lot of
time in this yet, but I was able to design a nice CNC UI and basic motion
engine easily using MacRuby. There is certainly enough interes
A little OT, but it seems like there is healthy interest for doing CNC
machining from OS X, with or without MacRuby, I am currently working
on an AVR/Arduino based solution myself, so anybody know of a topical
ML and/or Wiki, or is there interest in setting up a site, or project
on github/launchpad
On 18 Jan 2012, at 15:33, Will Thorne wrote:
> Hello,
>
> Long time lurker making first post here. You could use an Arduino and do the
> real time pulse generation stuff on that. Then just write a macruby app that
> serialises the commands and feeds them to the Arduino which interprets them
>
Hi Will,
Thanks for the info on Arduino - looks like some interesting possibilities
there. I didn't realize that Arduino had several different boards available. I
may be able to connect one or more boards to a DB25 parallel connector to
control my HobbyCNC micro-stepping driver board.
Thanks,
Hi Dave,
Thanks for the info. I do agree that these solutions are better than what I had
intended to do, but they are a bit expensive for the average hobbyist. The
controlling CNC applications are still PC based but can run under "Parallels"
on the Mac since the controllers offload the realtime
On Jan 18, 2012, at 1:10 AM, Dave Baldwin wrote:
> PC based CNC controllers are suck in the dark ages - not only for the GUI
> they present but in how they control the steppers via the printer port. They
> rely on low level Window's drivers to generate accurate timing pulses (on the
> paralle
Hello,
Long time lurker making first post here. You could use an Arduino and do the
real time pulse generation stuff on that. Then just write a macruby app that
serialises the commands and feeds them to the Arduino which interprets them and
flips the necessary IO pins on and off. It's years sin
Indeed, I can only agree that USB based parallel port adapters have
very shitty timing, in no small part due to USB itself. You cannot do
motion control over USB->PP like you could straight to the parallel
port on Windows (which wasn't that great to begin with), the motion
control part needs to be
Hi Bob,
You don't really say what your final goal is so this may not suit your purpose.
PC based CNC controllers are suck in the dark ages - not only for the GUI they
present but in how they control the steppers via the printer port. They rely
on low level Window's drivers to generate accurate
Hi Scott,
I don't see any change in the /dev directory when I plug and unplug the device.
Unfortunately, Apple hasn't updated the USB example developer projects and many
of the examples don't work under Lion.
I may need to use IOKit routines to search for the device in the USB device
tree.
Tha
On Jan 17, 2012, at 7:07 PM, Scott Ribe wrote:
> On Jan 17, 2012, at 7:11 PM, Robert Rice wrote:
>
>> Prolific provides documentation for the simple report protocol for the
>> device. I suspect that an appropriate driver already exists for this device
>> but how would I find it?
I actually ra
On Jan 17, 2012, at 8:17 PM, Robert Rice wrote:
> I have lots of device files in dev but nothing identified by 1284. Is there a
> way to search other than by file name?
No, but you can compare the listings with the device plugged & unplugged.
--
Scott Ribe
scott_r...@elevated-dev.com
http://ww
Hi Scott,
I have lots of device files in dev but nothing identified by 1284. Is there a
way to search other than by file name?
Thanks,
Bob
On Jan 17, 2012, at 10:07 PM, Scott Ribe wrote:
> On Jan 17, 2012, at 7:11 PM, Robert Rice wrote:
>
>> Prolific provides documentation for the simple repo
On Jan 17, 2012, at 7:11 PM, Robert Rice wrote:
> Prolific provides documentation for the simple report protocol for the
> device. I suspect that an appropriate driver already exists for this device
> but how would I find it?
Look in /dev for something that looks like it would be that device?
Hi,
I've become interested in Computer Numeric Control (CNC) machine control. I
find there is very little support for the Macintosh platform and many PC
programs for the task have a crude user interface so I would like to create a
Macintosh CNC application using MacRuby.
CNC programs and motor
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