Hi Chris,
At the moment my harmonic drive 4th axis is still sitting in this 4 part 3D
printed prototype.
http://www.autoartisans.com/mill/HarmonicDrive/FullSize-6.jpg
There have been so many other the go that I just haven't had time to cast it
however it does move using the STMBL drive. Need
Plastic works because it is a "mini" mill. I would use metal for a larger
industrial sized machine. But even if you are making a cast iron part,
make the pattern on a 3D printer.
On Mon, Jun 14, 2021 at 8:04 PM John Dammeyer
wrote:
> Thank you for posting that.
> So in the places where I'd
Hi Ron,
Well other than the rather annoying motor start-up when LinuxCNC is stopped
issue the reason for the test set is to now install a different BIT file into
the 7i92H, use a slightly modified to replace the PWM/DIR with stepper.
14 1 IOPort StepGen 5
that's ool. Once I clear out my "work bench" a bit, I might et up a
few things, possbly even with an RPI4 or so, and just test some setups.
I wonder if I have more fun playing/messing with these CNC machines the
actually doing stuff with them (which I want to, I have that telescope
Here's my test setup.
from left to right.
1. MESA 7i92H connected via Ethernet to the Pi4 1Gb sitting under my monitor.
The Pi is running LinuxCNC.
2. Probotix Break out Board and although it could be isolated I'm using the
same 12V supply for both sides with the BLK/WHT twisted wires.
On 6/14/21 3:45 AM, andy pugh wrote:
On Mon, 14 Jun 2021 at 01:45, R C wrote:
What would be the best way to replace the BOB-LPT stuff?
The most direct replacement for the PCI parallel port card would be a
Mesa 5i25. (or 6i25 if you are PCIe)
That looks just like a parallel port card, and
On 6/14/21 3:50 AM, andy pugh wrote:
On Mon, 14 Jun 2021 at 02:16, R C wrote:
I have seen the 7i92 mentioned, and others, can they do multiple
stepper motors? (right now I am using a parallel BOB, that connects
to steopper drivers (ala DM542), which drive the actual steppers.)
The
Thank you for posting that.
So in the places where I'd make a pattern and cast from scrap aluminium you 3D
print the part.
Very nicely done!
John
> -Original Message-
> From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> Sent: June-14-21 7:44 PM
> To: Enhanced Machine Controller
On Mon, Jun 14, 2021 at 9:43 AM John Dammeyer
wrote:
> Have you any photos of the 3D printed motor mounts etc? Direct drive or
> belt driven? The 3Nm implies size 23 so I'll guess direct drive.
> John
>
THis shows X and Y. https://youtu.be/wupYP2NNsXI?t=33
This shows the Z axis. On this
Voltage doubling VFD, but they start at 5 horsepower.
https://www.phasetechnologies.com/voltage-doubling Says using a transformer on
the input of a VFD is a bad idea.
Three doubling transformers in parallel, one per phase, might work, but so far
it seems that if it involves 480V 5HP is the
hey everyone
just researching about gearbox components and thought I would ask some
questions before I get into it properly
I have a two speed gearbox in my cnc lathe
with hydraulic solenoids to change gear
and sensors to check it is in correct gear
and I have a spindle encoder 1 to 1 on
Got home & checked the debian-version file, which states 7.11. As I recall
that is Wheezy.
That is only 5 years old.
--J. Ray Mitchell Jr.
jrmitche...@gmail.com
“I predict future happiness for Americans, if they can prevent the
government from wasting the labors of the people under the
On Mon, 14 Jun 2021 at 23:36, Gregg Eshelman via Emc-users
wrote:
>
> The motor is in a Hardinge UM mill, less than 1 horsepower. It cannot be
> switched to 220V. Any way to get it running off 220 volts, three or single
> phase, without breaking a few banks?
Yes.
Find a significantly
Sorry, Ignore my last post they are are all single phase when under $200
and <3KW.
On 6/14/21 5:33 PM, Gregg Eshelman via Emc-users wrote:
The motor is in a Hardinge UM mill, less than 1 horsepower. It cannot be
switched to 220V. Any way to get it running off 220 volts, three or single
Maybe https://www.ebay.com/itm/254550292370 if you're in the states. A
few on ebay for <$200.
On 6/14/21 5:33 PM, Gregg Eshelman via Emc-users wrote:
The motor is in a Hardinge UM mill, less than 1 horsepower. It cannot be
switched to 220V. Any way to get it running off 220 volts, three or
The motor is in a Hardinge UM mill, less than 1 horsepower. It cannot be
switched to 220V. Any way to get it running off 220 volts, three or single
phase, without breaking a few banks?
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
> From: andy pugh [mailto:bodge...@gmail.com]
> On Sun, 13 Jun 2021 at 09:52, John Dammeyer wrote:
>
> > I've also read that the Pi4 8GB is not ideal for LinuxCNC. Apparently it
> > has issues with that much memory on the Pi. It works best
> with 4GB apparently.
>
> Well, the existing
On Sun, 13 Jun 2021 at 09:52, John Dammeyer wrote:
> I've also read that the Pi4 8GB is not ideal for LinuxCNC. Apparently it has
> issues with that much memory on the Pi. It works best with 4GB apparently.
Well, the existing preemp-rt kernel when I built the 2.8 release
packages was 32-bit,
Well, that machine is not on Buster. It must be time to install that newer
motherboard and the current OS.
I bought a i5 motherboard & CPU about 9 months ago for it.
--J. Ray Mitchell Jr.
jrmitche...@gmail.com
“I predict future happiness for Americans, if they can prevent the
government from
On Mon, 14 Jun 2021 at 21:30, jrmitchellj wrote:
>
> In the last few weeks, I have noticed that I am not getting any new builds
> of the Master branch.
You can see the latest build here:
http://buildbot.linuxcnc.org/buildbot/grid
But: Which Debian / Ubuntu version are you running? Master is now
On Monday 14 June 2021 16:26:50 jrmitchellj wrote:
> In the last few weeks, I have noticed that I am not getting any new
> builds of the Master branch.
> Have we reached perfection, or should I be looking for an issue with
> my machine?
>
Might be your machine J. Ray, I probably got fresh updates
In the last few weeks, I have noticed that I am not getting any new builds
of the Master branch.
Have we reached perfection, or should I be looking for an issue with my
machine?
--J. Ray Mitchell Jr.
jrmitche...@gmail.com
“I predict future happiness for Americans, if they can prevent the
On 6/13/21 9:18 PM, Leonardo Marsaglia wrote:
Wow, that escalated quickly! LOL.
Nah, we just get trolls on the list from time to time. They don't have
any solutions, just random complaints and half baked ideas.
Well, I've been reading everyone and I guess I'll stay with the normal PC
I too have a Beagle with a xylotex cape just sitting there looking for a
project.
One option I've thought of, and it might be ideal for that is scrap the hdmi
and on board flash to get more I/O. Then connect an SPI 10" screen and the
ability to support a key button matrix of up to say 64
Have you any photos of the 3D printed motor mounts etc? Direct drive or belt
driven? The 3Nm implies size 23 so I'll guess direct drive.
John
> -Original Message-
> From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> Sent: June-14-21 8:41 AM
> To: Enhanced Machine Controller
Ok Andy that sounds great. I’ll pull out the little beast and give it a whirl.
One question tho, will this build on Wheezy or do I need something “more”
modern.
It would be great to put the BBB and the breakout boards back into service,
even for an overkill project.
Cheers
Rob
Composed with my
Yes, I thought about reverse engineering the spindle motor controller and
fitting it with a conector for external PWM input but my goal with this CNC
conversion was to try and do the lowest cost and easiest possible
conversion and document it. So at every decision point I take the simplest
route
Den 2021-06-14 kl. 15:45, skrev andy pugh:
On Mon, 14 Jun 2021 at 14:24, Nicklas SB Karlsson wrote:
It would probably work if position is scaled down to correct number of
pockets first adding an offset to get angle of the pockets correct.
I had rather assumed that the encoder index would be
Yes, I have 3ph vfds being controlled by Linuxcnc. On two multi spindle
routers. One with 8 spindles and one with 6 spindles. The 8 spindle machine
is using MB2hal to control the routers, on/off and set/monitor the speed (AC
Tech brand VFDs). The 6 spindle machine is using parallel ports and
Hi Rita
Now that you are retired, I thought you might be interested in this email. The
group is heavily involved with open source machining. As this posting
indicates, they are doing serious work. This isn't exactly the kind of
woodworking that you have expressed an interest in, but it
On Mon, 14 Jun 2021 at 14:24, Nicklas SB Karlsson wrote:
> It would probably work if position is scaled down to correct number of
> pockets first adding an offset to get angle of the pockets correct.
I had rather assumed that the encoder index would be aligned to the
base pocket.
> Think it
Den 2021-06-14 kl. 14:48, skrev andy pugh:
On Sat, 12 Jun 2021 at 12:15, Nicklas SB Karlsson wrote:
Do not find any modulo arithmetic in hal, it is very useful then waiting
for a particular angle both if value overflow or just accumulate. May be
solved by loop and modulo operator in g-code
On Sat, 12 Jun 2021 at 08:32, Robert Murphy wrote:
> What I was thinking of is a simple GUI control the position of the
> fence, and hooking a ESP32 (via ethernet) to do the motion
> control..
This sounds like it might be simple enough to do with a BBB and PRU
stepgens or even with software
On Sat, 12 Jun 2021 at 12:15, Nicklas SB Karlsson wrote:
> Do not find any modulo arithmetic in hal, it is very useful then waiting
> for a particular angle both if value overflow or just accumulate. May be
> solved by loop and modulo operator in g-code but maybe adding to
> carousel component
On Mon, 14 Jun 2021 at 02:16, R C wrote:
> I have seen the 7i92 mentioned, and others, can they do multiple stepper
> motors? (right now I am using a parallel BOB, that connects to steopper
> drivers (ala DM542), which drive the actual steppers.)
The Mesa FPGA card replaces the parport
On Mon, 14 Jun 2021 at 01:45, R C wrote:
> What would be the best way to replace the BOB-LPT stuff?
The most direct replacement for the PCI parallel port card would be a
Mesa 5i25. (or 6i25 if you are PCIe)
That looks just like a parallel port card, and hooks up in exactly the
same way.
How old is that mill? Those Chinese mini mills and lathes have had PWM spindle
motor controllers for many years. I used to have a Grizzly mini lathe with a
low 3 digit serial number, probably from the first batch they imported. I was
at least the 3rd owner and I had to fix a lot of issues, both
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