Re: [Emc-users] ATS-667 advice

2016-10-14 Thread Gene Heskett
On Friday 14 October 2016 23:40:08 Erik Christiansen wrote: > On 14.10.16 18:41, MC Cason wrote: > >Here is one in a 01005 package (Metric 0402) 0.016"L x 0.008"W > > - (0.40mm x 0.20mm) : > > http://www.mouser.com/ProductDetail/AVX/01016D104KATUA/?qs=sGAEpiMZZ >

Re: [Emc-users] ATS-667 advice

2016-10-14 Thread Erik Christiansen
On 14.10.16 18:41, MC Cason wrote: >Here is one in a 01005 package (Metric 0402) 0.016"L x 0.008"W - > (0.40mm x 0.20mm) : > http://www.mouser.com/ProductDetail/AVX/01016D104KATUA/?qs=sGAEpiMZZMs0AnBnWHyRQAwkDkDzLNakJDHmuCcZvLc%3d > >They are cheaper than the through hole caps that I

Re: [Emc-users] ATS-667 advice

2016-10-14 Thread Gene Heskett
On Friday 14 October 2016 19:41:23 MC Cason wrote: > Gene, > >Inline > > On 10/14/2016 02:01 PM, Gene Heskett wrote: > > On Friday 14 October 2016 14:45:31 Chris Albertson wrote: > >> Typically 0.1 bypass caps REALLY to have to be physically close to > >> the load they are bypassing. Within a

Re: [Emc-users] Linuxcnc on arm

2016-10-14 Thread Chris Albertson
No, it would not get you to ns levels. The reason is that the computer is not always in a state where it can be interrupted. The hardware trigger (line going low) would happen but it has to wait until the computer looks at the trigger signal. It only does this between machine instructions

[Emc-users] Pico Systems Universal Stepper Controller Power Connection

2016-10-14 Thread Joshua Glenn
Hello all. I am wondering if the universal stepper controller from Pico Systems requires an external 5V power supply or not. And, if so, what is the current requirement and to what terminals should I connect it? -- Check

Re: [Emc-users] ATS-667 advice

2016-10-14 Thread MC Cason
Gene, Inline On 10/14/2016 02:01 PM, Gene Heskett wrote: > On Friday 14 October 2016 14:45:31 Chris Albertson wrote: > >> Typically 0.1 bypass caps REALLY to have to be physically close to the >> load they are bypassing. Within a few millimeters. Cut the leads >> short and bridge the power

Re: [Emc-users] Linuxcnc on arm

2016-10-14 Thread Jeff Epler
On Fri, Oct 14, 2016 at 08:11:38AM -0500, Charles Steinkuehler wrote: > Setup a Mesa card with a periodic timer that triggers a capture of the > current position and generates an interrupt (the Mesa VHDL code > already supports this). In the servo thread, instead of waiting on a > software timer,

Re: [Emc-users] ATS-667 advice

2016-10-14 Thread Gene Heskett
On Friday 14 October 2016 14:45:31 Chris Albertson wrote: > Typically 0.1 bypass caps REALLY to have to be physically close to the > load they are bypassing. Within a few millimeters. Cut the leads > short and bridge the power pins with the cap. > > Placing a larger cap farther away can't cause

Re: [Emc-users] ATS-667 advice

2016-10-14 Thread Chris Albertson
Typically 0.1 bypass caps REALLY to have to be physically close to the load they are bypassing. Within a few millimeters. Cut the leads short and bridge the power pins with the cap. Placing a larger cap farther away can't cause any harm but it is not going to do the same job. Reason: The real

Re: [Emc-users] Hacking a sim runtime mode

2016-10-14 Thread Todd Zuercher
I seem to be having some success with this. I have a simulation config set up with max velocities set to 100x, and max accelerations set to 1x, feed-overide set to 100x. Using my scaled timer set to 100x the estimated run time seems to be pretty consistently about 25% too long for a 20

Re: [Emc-users] Linuxcnc on arm

2016-10-14 Thread Peter C. Wallace
On Fri, 14 Oct 2016, Erik Friesen wrote: > Date: Fri, 14 Oct 2016 13:09:53 -0400 > From: Erik Friesen > Reply-To: "Enhanced Machine Controller (EMC)" > > To: "Enhanced Machine Controller (EMC)" > Subject:

Re: [Emc-users] Linuxcnc on arm

2016-10-14 Thread Erik Friesen
I guess I am not following how a hardware interrupt gets mapped to the userspace/lcnc servo thread. Any pointers on this? On Fri, Oct 14, 2016 at 11:45 AM, Jon Elson wrote: > On 10/14/2016 08:11 AM, Charles Steinkuehler wrote: >> On 10/14/2016 7:11 AM, Erik Friesen

[Emc-users] ATS-667 advice

2016-10-14 Thread Gene Heskett
Greetings everybody; A bit too cold this morning to go out to the shop and saw out the thicker spacers I am going to need to permanently mount the Z motor and screw anchor. So, not wanting to waste the day waiting for it to warm, I went back to work on the encoder thing this morning. I now

Re: [Emc-users] Linuxcnc on arm

2016-10-14 Thread Jon Elson
On 10/14/2016 08:11 AM, Charles Steinkuehler wrote: > On 10/14/2016 7:11 AM, Erik Friesen wrote: >> @Sebastian Kuzminsky Thanks for those docs. >> >> @Charles Steinkuehler >> >> How would you link an interrupt to linuxcnc? > Setup a Mesa card with a periodic timer that triggers a capture of the >

Re: [Emc-users] Hacking a sim runtime mode

2016-10-14 Thread Todd Zuercher
A quick stupid question, if i'm scaling time 100x, velocities should increase 100x, but what about acceleration, should that be increased 1x or 100x? - Original Message - From: "Todd Zuercher" To: "Enhanced Machine Controller (EMC)"

Re: [Emc-users] TLM is being the M again...

2016-10-14 Thread Gene Heskett
On Friday 14 October 2016 05:03:04 Sarah Armstrong wrote: > Gene, > Take a look at arceurotrade.co.uk > For bellows and covers > > Sarah > All I could find there was concertina style, some folded to interlock with the ways. The ones I got I found on ebay, and I got those more or less installed

Re: [Emc-users] Linuxcnc on arm

2016-10-14 Thread Charles Steinkuehler
On 10/14/2016 7:11 AM, Erik Friesen wrote: > @Sebastian Kuzminsky Thanks for those docs. > > @Charles Steinkuehler > > How would you link an interrupt to linuxcnc? Setup a Mesa card with a periodic timer that triggers a capture of the current position and generates an interrupt (the Mesa VHDL

Re: [Emc-users] Linuxcnc on arm

2016-10-14 Thread Erik Friesen
@Sebastian Kuzminsky Thanks for those docs. @Charles Steinkuehler How would you link an interrupt to linuxcnc? On Thu, Oct 13, 2016 at 9:15 PM, Charles Steinkuehler wrote: > On 10/13/2016 8:01 PM, Chris Albertson wrote: >> >> For sophisticated motion control you

Re: [Emc-users] Linuxcnc on arm (software library, static <--> dynamic)

2016-10-14 Thread Nicklas Karlsson
I forgot to mention the system clock. As is in the software libraries it is a variable although in almost all applications I have written clock frequency is assumed to be constant. Then I started to program I usually defined clock frequency to be constant since it is known at compile time. I do

Re: [Emc-users] Linuxcnc on arm (software library, static <--> dynamic)

2016-10-14 Thread Nicklas Karlsson
It might you used to register call back style functions but it is a lot simpler to tell which functions will be called if function calls are added in interrupt handler. The software I write usually is very simple and one of the reasons is I use the static approach, it have limitations but are

Re: [Emc-users] TLM is being the M again...

2016-10-14 Thread Sarah Armstrong
Gene, Take a look at arceurotrade.co.uk For bellows and covers Sarah Sent from BlueMail On 12 Oct 2016, 16:12, at 16:12, Gene Heskett wrote: >Greetings all; > >Whittling out the hose nipples for the bellows on the Z screw >yesterday, >I got the one for the sides of

Re: [Emc-users] Linuxcnc on arm (software library, static <--> dynamic)

2016-10-14 Thread Chris Albertson
You can choose to any of several libraries. I have an ARM M3 right now using the Arduino IDE. Can't get much simpler than that. Another one, an M4 here is being programmed using "mbed" library because I need to do something more complex that needs an RTOS but mbed is also very simple,