Re: [Emc-users] Interesting ARM SOC for Machine Control

On Wed, Apr 29, 2020 at 5:05 AM Lester Caine wrote: > For the observant ... what is wrong with the front and back image of the > BPI-F2S ... > > OK I give up---what's wrong? I assume you're talking about

Re: [Emc-users] RXTX problem

On 4/29/2020 3:52 PM, Gene Heskett wrote: On Wednesday 29 April 2020 16:05:11 Brent Loschen wrote: I've used jssc, the successor to RXTX, with much success.  It's multi platform and open source.  Never had much luck with RXTX. But

Re: [Emc-users] G96 and spindle override on axis not working

Hello Gene, I'm using a step generator from the 7i52 to feed the pulse command input on the Yaskawa v1000. So I have to play with the scale factor to modify the frequency. The driver accepts a maximum frequency of 32 khz and it has a max freq setting inside that range to set up the maximum

Re: [Emc-users] G96 and spindle override on axis not working

On Wednesday 29 April 2020 19:02:17 Leonardo Marsaglia wrote: > It's me again, > > We managed to get the spindle VFD working with pulse input command. > The problem is, I can't get to work the G96 code or the feed override > on axis. I'm able to set different speeds via MDI and it responds well >

[Emc-users] G96 and spindle override on axis not working

It's me again, We managed to get the spindle VFD working with pulse input command. The problem is, I can't get to work the G96 code or the feed override on axis. I'm able to set different speeds via MDI and it responds well but that's all. The feed override slider is behaving like a on/off switch

Re: [Emc-users] More camshaft turning/external offsets

> -Original Message- > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > Sent: April-29-20 2:49 PM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] More camshaft turning/external offsets > > I installed another tool holder with much more relief and now I can rough

Re: [Emc-users] RXTX problem

On Wednesday 29 April 2020 16:05:11 Brent Loschen wrote: > I've used jssc, > the > successor to RXTX, with much success.  It's multi platform and open > source.  Never had much luck with RXTX. > But how do I convince the .jar that wants

[Emc-users] More camshaft turning/external offsets

I installed another tool holder with much more relief and now I can rough the lobes in one pass. Here's a video of a one pass rough cut. I'm turning the spindle at about 100 RPM and the depth of the cut is 3.5 mm approximately. Here's the video: https://youtu.be/xjBXa6RHSPQ

Re: [Emc-users] 6i24 + 7i44 + 7i52s + 7i33 is it possible?

Solved. I just had to increase the step length and step space to at least 1000 nsec because the vfd would work with pulses shorter than that. So, for now I don't need to plug the 7i33. El mar., 28 abr. 2020 a las 20:15, Leonardo Marsaglia (< ldmarsag...@gmail.com>) escribió: > By the way, this

Re: [Emc-users] RXTX problem

I've used jssc, the successor to RXTX, with much success.  It's multi platform and open source.  Never had much luck with RXTX. On 4/29/2020 1:14 PM, Gene Heskett wrote: This has nothing to do with linuxcnc other than this install

Re: [Emc-users] RXTX problem

On Wednesday 29 April 2020 15:52:58 Jon Elson wrote: > On 04/29/2020 02:14 PM, Gene Heskett wrote: > > This has nothing to do with linuxcnc other than this install is from > > one of our installers. > > > > I have a utility that talks to a 35 yo legacy computer, but needs > > the RXTX libraries

Re: [Emc-users] RXTX problem

On 04/29/2020 02:14 PM, Gene Heskett wrote: This has nothing to do with linuxcnc other than this install is from one of our installers. I have a utility that talks to a 35 yo legacy computer, but needs the RXTX libraries to do it. Not familiar with this, is this a Java library? It hasn't

[Emc-users] RXTX problem

This has nothing to do with linuxcnc other than this install is from one of our installers. I have a utility that talks to a 35 yo legacy computer, but needs the RXTX libraries to do it. It hasn't worked since the old asus mobo burned up and was replaced with a newer, faster board and cpu

Re: [Emc-users] A simple LinuxCNC system

> From: Jon Elson [mailto:el...@pico-systems.com] > On 04/29/2020 12:54 AM, John Dammeyer wrote: > > > > Here's my question for you. If the asynchronous pulse > > generator from your $1 chip has just created a pulse and > > the SERVO_PERIOD now wants to a new rate how do you set up > > the

Re: [Emc-users] A simple LinuxCNC system

> > > > Hi Gene, > > I'm just in learn mode trying to figure out how LinuxCNC works. Not > > worried about speed. So far, with various steppers when > actually used to drive machines I've found that if you can step at 20kHz you > are way beyond the torque capabilities of the motors. > > >

Re: [Emc-users] A simple LinuxCNC system

> Is the real time component of Linux CNC running all the tasks that are > > started with the loadrt with a 24uS period?In other words all loaded > > "loadrt tasks" have to finish within 24uS or the system will start to have > > jitter or miss events. > > > > No, only the functions that are

Re: [Emc-users] A simple LinuxCNC system

On 04/29/2020 12:54 AM, John Dammeyer wrote: Here's my question for you. If the asynchronous pulse generator from your $1 chip has just created a pulse and the SERVO_PERIOD now wants to a new rate how do you set up the frequency generator so that the next pulse is correctly spaced from the

Re: [Emc-users] A simple LinuxCNC system

On 04/29/2020 12:10 AM, John Dammeyer wrote: Hi Gene, I'm just in learn mode trying to figure out how LinuxCNC works. Not worried about speed. So far, with various steppers when actually used to drive machines I've found that if you can step at 20kHz you are way beyond the torque

Re: [Emc-users] Non-circular boring. Linuxcnc style.

Sam, I heard you say your circle is a polygon of a thousand sides. In APT4 a circle of 2500 inches radius is calculated as a straight line. That allows an algorithm for part profiles to be described as all radiuses and the variable values determine the lines and circles. Just another possibly

Re: [Emc-users] Interesting ARM SOC for Machine Control

On 29/04/2020 03:07, Bari wrote: Has a FPGA interface and integrated ARM926 real-time core and tons of IO It's a pity they decided to reinvent the 'banana-pi' footprint ... the one I have provides a nice sata port in the same footprint as a standard Pi

Re: [Emc-users] A simple LinuxCNC system

On Wed, 29 Apr 2020 at 01:35, John Dammeyer wrote: The important constants come from the INI file: > Note that they don't have to. A very simple LinuxCNC configuration can omit the INI. But once you loadrt motmod, then you need an INI to pass it the axis data. Is the real time component of

Re: [Emc-users] A simple LinuxCNC system

On Wednesday 29 April 2020 01:10:54 John Dammeyer wrote: > > If using the parport in EPP mode, you can set a reset time > > separately, so you can step at the base thread rate. As far as motor > > speed is concerned, the speed limit is generally the speed limit of > > the opto stuff in the