Hello!
Is it possible to control 6 steppers with a single 7i76? There are 5
step/dir outputs, and I guess that IO pins are not meant for high step
rate...
The drives need TTL input, not differential. I could try to connect them
directly to 5i25. Is there a firmware to support this (on a single
On 9 December 2013 11:54, Andrew pkm...@gmail.com wrote:
Is it possible to control 6 steppers with a single 7i76? There are 5
step/dir outputs, and I guess that IO pins are not meant for high step
rate...
The IO pins are serial addressed, in the servo thread.
The drives need TTL input, not
On 12/08/13 23:21, Gregg Eshelman wrote:
On 12/8/2013 9:47 AM, Charles Steinkuehler wrote:
I'm working on a non-Cartesian 3D printer controlled with LinuxCNC, and
rather than level the print bed mechanically, I would like to measure a
few points and transform the G-Code in roll/pitch/yaw to
On 9 December 2013 12:47, Charles Steinkuehler char...@steinkuehler.net wrote:
So, the options are to add mechanical complexity simply to provide a way
to get the bed level enough to print on
On the Simpson it looks like that mechanism is 6 more nuts.
I spend most of my working life
On 12/9/2013 6:55 AM, andy pugh wrote:
On 9 December 2013 12:47, Charles Steinkuehler char...@steinkuehler.net
wrote:
So, the options are to add mechanical complexity simply to provide a way
to get the bed level enough to print on
On the Simpson it looks like that mechanism is 6 more
On 9 December 2013 13:38, Charles Steinkuehler char...@steinkuehler.net wrote:
Yes, Leveling the bed on the Simpson is easy...what I expect will be
hard is getting the plane of the physical bed to exactly match up with
the XY plane of the arm movement.
It looks like it should be easy. But I
On Sun, Dec 08, 2013 at 11:21:19AM -0600, Charles Steinkuehler wrote:
Also, the math only
needs to happen on the endpoints, not every mS as the machine is moving
along the commanded path.
This is only true in a very limited situation: if you expect the
table to be planar (what if it's a
On 12/8/13 09:12 , andy pugh wrote:
The INI Files all seem to contain this:
[EMC]
# Version of this INI file
VERSION = $Revision$
I have no idea what that means, or what it is used for.
As Erik Christiansen said, these are relics from when we used CVS to
track our
On 9 December 2013 16:24, Sebastian Kuzminsky s...@highlab.com wrote:
As Erik Christiansen said, these are relics from when we used CVS to
track our repository. I think they should be removed from all our ini
files, and I will gladly accept a patch against master to do so.
Or... They could
:) nice!
I think it's only a matter of zeroing..
This is what I did with a four cable configuration and LCNC:
http://www.youtube.com/watch?v=22XJMw-28DU
Davide.
On dom, 2013-12-08 at 16:15 -0700, Gregg Eshelman wrote:
Here's just the thing for adding CNC to things like old pattern torches.
On 9 December 2013 17:22, Spiderdab 77...@tiscali.it wrote:
This is what I did with a four cable configuration and LCNC:
http://www.youtube.com/watch?v=22XJMw-28DU
Can it lift 80kg? That looks like fun.
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
Hi
I think it's only a matter of zeroing..
In deed, getting the kinematics right is the tricky part.
Here's short presentation of the three rope system that I and two
colleges built recently - it's an art installation, a drawing machine.
http://vimeo.com/72398393
See you
Flo
Hi Robert,
Im very interested in this too, are you trying to solve slow gcode or
smooth movement? or both?
one problems i find doing a filament winder, linear X and rot A, was
the lack of blending between them. Also the diferent interpretation of
feed between linear and angular (regular feed or
On 12/09/2013 12:03 PM, Florian Rist wrote:
Hi
I think it's only a matter of zeroing..
In deed, getting the kinematics right is the tricky part.
Here's short presentation of the three rope system that I and two
colleges built recently - it's an art installation, a drawing machine.
On 12/09/2013 12:02 PM, andy pugh wrote:
On 9 December 2013 17:22, Spiderdab 77...@tiscali.it wrote:
This is what I did with a four cable configuration and LCNC:
http://www.youtube.com/watch?v=22XJMw-28DU
Can it lift 80kg? That looks like fun.
the NIST robocrane and Spider can
(from the
On Mon, Dec 9, 2013 at 1:04 PM, Ricardo Moscoloni rmoscol...@gmail.comwrote:
Hi Robert,
Im very interested in this too, are you trying to solve slow gcode or
smooth movement? or both?
I'm mostly trying to improve the speed of programs with small segments, but
part of that effort has improved
Hi
What is that machine doing?
It's laying out a thin thread spooled from a large 1 m spool sitting
next to the white base. The motor to do so sits in the head, supported
by the three ropes. This head also carries a Raspberry Pi board, a WLAN
bridge, a servo driver and USB camera. The
2013/12/9 andy pugh
bodge...@gmail.comhttps://mail.google.com/mail/u/0/?view=cmfs=1tf=1to=bodge...@gmail.com
There are ttl-level stepgens on the second port (the header on the
5i25) with the 2x7i76 firmware.
Really. Thanks!
First I'll try to use 6 software stepgens via parport. If too slow
One more thing regarding ropes: This is the pro version (6 ropes):
http://www.youtube.com/watch?v=RCa8uDFzbsw
Developed at the Fraunhofer Institute in Stuttgart:
http://www.ipa.fraunhofer.de/Parallele_Seilroboter.597.0.html
See you
Flo
On 12/09/13 08:40, Chris Radek wrote:
On Sun, Dec 08, 2013 at 11:21:19AM -0600, Charles Steinkuehler wrote:
Also, the math only
needs to happen on the endpoints, not every mS as the machine is moving
along the commanded path.
This is only true in a very limited situation: if you expect
On 12/9/2013 5:47 AM, Charles Steinkuehler wrote:
BTW: I'm currently working on a Wally, but this applies also to the GUS
Simpson I'm starting on next:
http://www.conceptforge.org/
Looks like they could use shims under the build plate corners. Get it
level and it should stay level.
The
On 12/9/2013 6:38 AM, Charles Steinkuehler wrote:
Yes, Leveling the bed on the Simpson is easy...what I expect will be
hard is getting the plane of the physical bed to exactly match up with
the XY plane of the arm movement. I have yet to see how well the homing
switches will work for
On 12/9/2013 7:40 AM, Chris Radek wrote:
In the general case of compensating for a non-square non-orthogonal
machine (whose geometry changes randomly from one day to the next?)
and running fully-featured gcode, it's inadequate, and a full kins
solution that runs at every servo cycle is more
2013/12/9 Florian Rist fr...@fs.tum.de
One more thing regarding ropes: This is the pro version (6 ropes):
http://www.youtube.com/watch?v=RCa8uDFzbsw
Paused at 0:57 and I see 7 ropes. And at 3:17 I certainly do no understand,
what kind of g-code is that, it seems to use G01 and G02, but the
I made a 600+ mile round trip last week to pick up a load of NMTB 30
tooling for $1,000. A very nice surprise was the lot included a
Kennametal Erickson quick change spindle from a Bridgeport. The guy had
swapped it for an R8 spindle so he no longer needed all the 30 taper
stuff. Didn't
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