On March 9, 2010 05:19:32 pm Andy Pugh wrote:
On 9 March 2010 20:45, Paul Midgley p...@midgley.org wrote:
The reason I asked the question is that the Reprap project at
www.reprap.org, do exactly what I suggested. Unfortunately their project
is making items from plastic in a 3D prototyping
I tested a Nema 23 two stack stepper (bipolar) in closed loop with EMC2
lately. The stepper driver is a Gecko 251 at 45V and 3A. The encoder is an
AMT102 connected TTL to a MESA 5i20 (P2) through a 7i33. The G251 step/dir
signals are connected directly to the 5i20 (P4). The objective was to see
I am currently adding a RepRap head to my EMC2 controlled desktop mill.
Using serial link to control head temperature but feed rate will be
controlled via EMC2.
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Download Intel#174;
Interesting!
What brand mill? How fast can you move the table around? Also, what
are your motors, electronics, etc. like? (I'm trying to pin down some
known-good mill-and-motor-and-electronics toolchains to recommend to
our users. I'm also worried that mills make bad bootstrap RepRaps
because
On 10 March 2010 08:49, Rudy du Preez r...@asmsa.co.za wrote:
The motor runs very smooth and the following error is maximum about 6 counts
at high speed. The counts per rev is 2000. The highest speed is about 2000
rpm above which the motor suddenly stalls and then a fault error is given.
Is
Rudy du Preez wrote:
I tested a Nema 23 two stack stepper (bipolar) in closed loop with EMC2
lately. The stepper driver is a Gecko 251 at 45V and 3A. The encoder is an
AMT102 connected TTL to a MESA 5i20 (P2) through a 7i33. The G251 step/dir
signals are connected directly to the 5i20 (P4).
for a small stepper motor, like a NEMA 17 I need a small (DC) electrically
driven lock that I can attach to the shaft such that when the power is
turned off the shaft is locked in place.
Do any of you folks know of such a device? I've been googling around but I
haven't been able to come up with
On Wed, 10 Mar 2010, doug metzler wrote:
Date: Wed, 10 Mar 2010 09:11:13 -0800
From: doug metzler doug.metz...@gmail.com
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: [Emc-users]
On Wed, 2010-03-10 at 09:11 -0800, doug metzler wrote:
for a small stepper motor, like a NEMA 17 I need a small (DC) electrically
driven lock that I can attach to the shaft such that when the power is
turned off the shaft is locked in place.
Do any of you folks know of such a device? I've
Kirk Wallace wrote:
I need a C algorithm that solves the shortest distance to a carousel
tool (encoder wraps at 0). I can solve the distance from the current to
the target tool with three tests, CW distance CCW distance, then test
for the shortest, but it seems I should be able to do this in
I need a C algorithm that solves the shortest distance to a carousel
tool (encoder wraps at 0). I can solve the distance from the current to
the target tool with three tests, CW distance CCW distance, then test
for the shortest, but it seems I should be able to do this in one test.
I suspect the
I've updated the documentation about this. The new text is:
Program G96 D- S- to select constant surface speed of S feet per
minute (if G20 is in effect) or meters per minute (if G21 is in
effect). The maximum spindle speed is set by the D- number in
revolutions per minute. When
On Wed, 2010-03-10 at 13:02 -0500, Stephen Wille Padnos wrote:
Kirk Wallace wrote:
I need a C algorithm that solves the shortest distance to a carousel
tool (encoder wraps at 0). I can solve the distance from the current to
the target tool with three tests, CW distance CCW distance, then
Kirk Wallace wrote:
On Wed, 2010-03-10 at 13:02 -0500, Stephen Wille Padnos wrote:
Kirk Wallace wrote:
I need a C algorithm that solves the shortest distance to a carousel
tool (encoder wraps at 0). I can solve the distance from the current to
the target tool with three tests, CW
Anyone have any experience in using EMC with Linistepper driver boards? I was
wondering about the settings to use in EMC and was just curious if anyone else
had used them and would be willing to share their experiences and settings.
Chris
You could also just drop a solenoid plunger into sprocket teeth or
something similar.
Sort of like throwing the proverbial wrench into the works... ;-)
Nema 17 is pretty small stuff.
Dave
On 3/10/2010 2:32 PM, yann wrote:
Le mercredi 10 mars 2010 18:11:13, doug metzler a écrit :
for a
I'm not sure there is such a thing; but I'm looking for some low cost
linear servo motors?
At least it needs to be substantially cheaper than Parker's linear servos.
I'm looking for one with about 2 of stroke, 20 lbs of force and
accuracy to .002 inches.
So does anyone have any experience
On Wed, 2010-03-10 at 14:11 -0500, Stephen Wille Padnos wrote:
... snip
changer is a carousel. If set true, then it's assumed that max is next
to min and you can get from min to max by going back one and wrapping
around.
Hope this helps.
- Steve
Cool. Thanks. The plan was to assign each
Le mercredi 10 mars 2010 20:27:06, Chris Reynolds a écrit :
Anyone have any experience in using EMC with Linistepper driver boards? I
was wondering about the settings to use in EMC and was just curious if
anyone else had used them and would be willing to share their experiences
and
Hi Doug
for a small stepper motor, like a NEMA 17 I need a small (DC)
electrically driven lock that I can attach to the shaft such that
when the power is turned off the shaft is locked in place.
Before installing a mechanical brake, try short-circuiting the motor
coils. The motor will be
Le mercredi 10 mars 2010 20:42:26, Dave a écrit :
You could also just drop a solenoid plunger into sprocket teeth or
something similar.
Sort of like throwing the proverbial wrench into the works... ;-)
Nema 17 is pretty small stuff.
Dave
problem with that is you will stop only at
Kirk Wallace wrote:
On Wed, 2010-03-10 at 14:11 -0500, Stephen Wille Padnos wrote:
... snip
changer is a carousel. If set true, then it's assumed that max is next
to min and you can get from min to max by going back one and wrapping
around.
Hope this helps.
- Steve
Cool.
On Wed, 2010-03-10 at 15:42 -0500, Stephen Wille Padnos wrote:
... snip
That could work I think. It might get sticky if there's any motion once
the turret is in position.
I need to provide a function to stop the carousel at a the proper
encoder value, maybe using PID, so the carousel should
True, but usually brakes are only applied to keep things from sliding
out of position when power is lost.
If you have power to the stepper motor, it should not require a brake.
For instance I have a brake on my X axis on my slant back lathe so when
power is lost the turret doesn't slide down
I like the wiki page definition of stupidly expensive as $200-300.
I suspect there are thousands of hobbyist cnc users out there that
would take exception to that characterization.
Eric
On Wed, Mar 10, 2010 at 4:32 AM, Sebastien Bailard
peng...@supermeta.com wrote:
Interesting!
What brand
On Wed, 2010-03-10 at 20:54 -0500, Eric Keller wrote:
I like the wiki page definition of stupidly expensive as $200-300.
I suspect there are thousands of hobbyist cnc users out there that
would take exception to that characterization.
Eric
On Wed, Mar 10, 2010 at 4:32 AM, Sebastien Bailard
How to creative the new interface like as interface mini from tkemc, or
repair interface mini again?
Thanks.
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Try the new software tools for yourself. Speed compiling, find bugs
This is the case with me as well - when one of the interlocks is opened I
lose power and the z axis can drop into the work. I don't actually have to
maintain the exact position so a small amount of movement is tolerable, so
long as the thing doesn't run away - this would allow for a less
Torsten Koschorrek, the ARM maintainer for RTAI has informed me he has
an RTAI patch ready for the Beagle Board.
He is working on a 2.6.29 kernel, but hasn't uploaded the latest docs
for it yet. That should happen in a couple days, he
says. So, if anyone wants to try out this patch kit, there
在 2010-03-10三的 23:53 -0600，Jon Elson写道：
Torsten Koschorrek, the ARM maintainer for RTAI has informed me he has
an RTAI patch ready for the Beagle Board.
He is working on a 2.6.29 kernel, but hasn't uploaded the latest docs
for it yet. That should happen in a couple days, he
says. So, if
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Download Intel#174; Parallel Studio
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