Re: [Emc-users] New kind of stepper motor on eBay

On Sunday 28 May 2017 01:44:20 Erik Christiansen wrote: > On 28.05.17 01:05, Gene Heskett wrote: > > On Saturday 27 May 2017 23:58:14 Erik Christiansen wrote: > > > P.S. As a side issue, I couldn't remember the imperial g, but: > > > You have: gravity > > > You want: ft/s^2 > > > *

Re: [Emc-users] New kind of stepper motor on eBay

On 28.05.17 01:05, Gene Heskett wrote: > On Saturday 27 May 2017 23:58:14 Erik Christiansen wrote: > > P.S. As a side issue, I couldn't remember the imperial g, but: > > You have: gravity > > You want: ft/s^2 > > * 32.174049 > > / 0.03108095 > > > > Yes, now I remember using 32,

Re: [Emc-users] New kind of stepper motor on eBay

On Saturday 27 May 2017 23:58:14 Erik Christiansen wrote: > On 27.05.17 16:58, Gene Heskett wrote: > > I think so too. But I am so used to thinking in in/lbs, and have > > never seen a formula or a chart that converts Nm to in/lbs, > > But on just about any full linux distro under your roof, you

Re: [Emc-users] the saga of gene vs pi's continues

On Saturday 27 May 2017 23:42:17 Todd Zuercher wrote: > - Original Message - > > > And people wonder why I run plumb out of patience. 2 steps fwd, slip > > and > > 6 steps back. Sigh... I see the light at the end of the tunnel and > > it > > runs me over. > > > > Cheers, Gene Heskett >

Re: [Emc-users] New kind of stepper motor on eBay

Looks to me just like a stepper motor with integrated motor driver without feedback. Maybe the Mechaduino is more like a closed-loop stepper-servo. I have ordered some PCBs from DirtyPcb and will assemble them when they arrive. Hope they are as good as announced.

Re: [Emc-users] the saga of gene vs pi's continues

On 27.05.17 22:50, Gene Heskett wrote: > And howinhell do I lock a kernel version, The one thing for version pinning that I have on record is: sudo apt-get install linuxcnc=1:2.6.0~pre~joints.axes3~6a281a6 (Substitute your package name and version, naturally.) I think I'd alias that to a short

Re: [Emc-users] New kind of stepper motor on eBay

On 27.05.17 16:58, Gene Heskett wrote: > I think so too. But I am so used to thinking in in/lbs, and have never > seen a formula or a chart that converts Nm to in/lbs, But on just about any full linux distro under your roof, you have: $ units You have: 3 N m You want: lbf in *

Re: [Emc-users] the saga of gene vs pi's continues

- Original Message - > And people wonder why I run plumb out of patience. 2 steps fwd, slip > and > 6 steps back. Sigh... I see the light at the end of the tunnel and > it > runs me over. > > Cheers, Gene Heskett > -- You've the patience of Job. I'd have pitched that Pi in the

[Emc-users] the saga of gene vs pi's continues

Greetings all; For lack of anything better to do this after noon I set out to cut and assemble the 50 pin jumpers to hook up my purty, all stacked up stairstep style, 7i42TA's. But when I plugged it in, it crowbared the psu. And I'm standing there contemplating my sins when I realize the

Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

On 28 May 2017 at 03:06, Sebastian Kuzminsky wrote: > Anders Wallin did this back in the halcyon days of 2010: > https://www.youtube.com/watch?v=VmjhUvA3YLE Though 7 years on most folk wouldn't class that as a good print :-) -- atp "A motorcycle is a bicycle with a

Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

On 05/27/2017 07:54 PM, andy pugh wrote: On 16 May 2017 at 14:27, Gene Heskett wrote: Has anyone put a printhead on a std moving table milling machine, and used it to do some 3d additive printing? https://www.youtube.com/watch?v=NEyL6cVWlo4 So, it clearly can work.

Re: [Emc-users] new thread inspired by Christophers question about 3d printer sliceing SW.

On 16 May 2017 at 14:27, Gene Heskett wrote: > Has anyone put a printhead on a std moving table milling machine, and > used it to do some 3d additive printing? https://www.youtube.com/watch?v=NEyL6cVWlo4 So, it clearly can work. -- atp "A motorcycle is a bicycle with a

Re: [Emc-users] New kind of stepper motor on eBay

Hello Chris, I might be missing something, but I don't think it's a closed loop motor. They never mention position loop, and I can't see an encoder. 27 трав. 2017 р. 10:56 пп "Chris Albertson" пише: > Hi, > > Has anyone here experience with this? > > I think these

Re: [Emc-users] New kind of stepper motor on eBay

Gene, 3Nm is about 425 inch pounds.Roughly 140 in oz to 1Nm I went to school in the late 70's to early 80's and even then all the science and engineering classes used metric. I could not even tell you what 1g is in Imperial units but it is just under 10 m/sec squared. In theory freight is

Re: [Emc-users] New kind of stepper motor on eBay

> -Original Message- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: Saturday, May 27, 2017 6:06 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] New kind of stepper motor on eBay > > On 27 May 2017 at 21:58, Gene Heskett wrote: > > I think

Re: [Emc-users] New kind of stepper motor on eBay

On 27 May 2017 at 21:58, Gene Heskett wrote: > I think so too. But I am so used to thinking in in/lbs, and have never > seen a formula or a chart that converts Nm to in/lbs, so I've no clue if > they might be usable for me. So what is 3Nm equ to? Is that lbs mass or lbs

Re: [Emc-users] New kind of stepper motor on eBay

On Saturday 27 May 2017 15:52:54 Chris Albertson wrote: > Hi, > > Has anyone here experience with this? > > I think these are new. I've seen them on some web sites and also > eBay. I can't find any good engineering information yet, like user > manuals or speed/torque plots but the idea is

Re: [Emc-users] New kind of stepper motor on eBay

I read about these a little while ago. They are not Chinese; they are made in the USA. I seem to remember they were a Kickstarter campaign, and I read a bit about them on Hackaday. Seemed like a good idea, but they are expensive. Maybe the Chinese copies are cheaper, of course. The maths they

Re: [Emc-users] switching to a slower spi driver to see if it works,

On Saturday 27 May 2017 15:14:55 Charles Steinkuehler wrote: > On 5/27/2017 12:21 PM, Gene Heskett wrote: > > On Saturday 27 May 2017 11:26:18 Peter C. Wallace wrote: > >> You might try lowering the series termination resistor value since > >> this looks like a possible SI issue (and the clock

[Emc-users] New kind of stepper motor on eBay

Hi, Has anyone here experience with this? I think these are new. I've seen them on some web sites and also eBay. I can't find any good engineering information yet, like user manuals or speed/torque plots but the idea is great. They are an integrated closed loop driver/controller and motor.

Re: [Emc-users] switching to a slower spi driver to see if it works,

On Saturday 27 May 2017 13:53:51 Bertho Stultiens wrote: > On 05/27/2017 02:41 PM, Gene Heskett wrote: > [snip] > > > If I can rebuild just this module on the pi itself, that is TBD. > > Gene, can you specify which base-distro you run on the Pi and which > kernel? I'd like to reproduce your

Re: [Emc-users] switching to a slower spi driver to see if it works,

On 5/27/2017 12:21 PM, Gene Heskett wrote: > On Saturday 27 May 2017 11:26:18 Peter C. Wallace wrote: > >> You might try lowering the series termination resistor value since >> this looks like a possible SI issue (and the clock signal will be very >> sensitive to SI issues). > > SI? Acronym for

Re: [Emc-users] CC-Link emc2

ok ... T-bird is fantastic ... I use it on my work place .. more custumisation is possible and good mail code analisys interface ... any how if you would separate in definitive manner work mail and other or install (or create) multiple interfaces or use web mail. bkt 2017-05-27 13:56 GMT+02:00

Re: [Emc-users] switching to a slower spi driver to see if it works,

On 05/27/2017 02:41 PM, Gene Heskett wrote: [snip] > If I can rebuild just this module on the pi itself, that is TBD. Gene, can you specify which base-distro you run on the Pi and which kernel? I'd like to reproduce your problem here on the bench and see if I can hack a fix. Also, what options

Re: [Emc-users] switching to a slower spi driver to see if it works,

On Saturday 27 May 2017 11:26:18 Peter C. Wallace wrote: > On Sat, 27 May 2017, Gene Heskett wrote: > > Date: Sat, 27 May 2017 08:41:26 -0400 > > From: Gene Heskett > > Reply-To: "Enhanced Machine Controller (EMC)" > > > > To:

Re: [Emc-users] switching to a slower spi driver to see if it works,

On Sat, 27 May 2017, Gene Heskett wrote: Date: Sat, 27 May 2017 08:41:26 -0400 From: Gene Heskett Reply-To: "Enhanced Machine Controller (EMC)" To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] switching to a slower spi

Re: [Emc-users] switching to a slower spi driver to see if it works,

On Saturday 27 May 2017 04:49:51 Bertho Stultiens wrote: > On 05/27/2017 05:46 AM, Gene Heskett wrote: > [snip] > > > This is the exact same response from the 7i90 at the initial 50 MHz > > clocking: > > > > pi@pionsheldon:~ $ linuxcnc -l > > LINUXCNC - 2.8.0-pre1-2771-gdc2ff49 > > Machine

Re: [Emc-users] CC-Link emc2

On 05/26/2017 11:22 PM, Erik Christiansen wrote: Dunno much about GUI offerings, but for a local no-spyware alternative, mutt displays thread trees very nicely, and collapses/expands them at your will. When it comes time to archive (the messages you've kept from) a thread to another mailbox,

Re: [Emc-users] CC-Link emc2

On 05/26/2017 06:15 PM, andy pugh wrote: It's too late, I have been using Gmail exclusively for many years. (I like how it threads mailing lists). Ditto, though I refuse to use the web interface. I download my emails to Thunderbird on my local laptop, an HP running Ubuntu 16.04 LTS. Have

Re: [Emc-users] CC-Link emc2

gmail can store the mailing list as forum manner ... so is more simple to read all post ... no local archive ... Nothing local from the web ... security issue bkt 2017-05-27 5:22 GMT+02:00 Erik Christiansen : > On 26.05.17 23:15, andy pugh wrote: > > On 26 May 2017 at

Re: [Emc-users] CC-Link emc2

So I continue my quite good experiences with gmail (it's seems well structured for mailing list, forum and these tipe of things ...) I normally do not worry about privacy because I fix the problem to the origin ... and take it for granted that others do the same I believe I will have to make

Re: [Emc-users] switching to a slower spi driver to see if it works,

On 05/27/2017 05:46 AM, Gene Heskett wrote: [snip] > This is the exact same response from the 7i90 at the initial 50 MHz > clocking: > > pi@pionsheldon:~ $ linuxcnc -l > LINUXCNC - 2.8.0-pre1-2771-gdc2ff49 > Machine configuration directory > is '/home/pi/linuxcnc/configs/sheldon-lathe' >

Re: [Emc-users] CC-Link emc2

On Saturday 27 May 2017 01:49:49 Erik Christiansen wrote: > On 27.05.17 00:01, Gene Heskett wrote: > > On Friday 26 May 2017 23:22:41 Erik Christiansen wrote: > > > Erik > > > (Who's carted some bricks, and quartered a small Blackwood log > > > with the chainsaw today, so will pass on the extra