Or, once you have your gerber file, you can use Line Grinder
(http://www.ofitselfso.com/LineGrinder/LineGrinder.php) to generate the
isolation milling GCode. I haven't tried it yet - still on my todo list.
Oops! LineGrinder is a windows program. But there are others such as
pcb2gcode
Just out of curiousity Gene, why are you trying to use Inkscape for PC
boards when you could use Kicad, gEDA or the free version of Eagle?
Can you say learning curve, combined with best utility? Inkscape, with
the
gcodes package installed, can export to gcode for starters, gEDA couldn't
I've used this on my lathe and just updated my mill from mach to
emc2+5i20...
http://www.mini-box.com/Intel-D945GSEJT-Mini-ITX-Motherboard
http://www.mini-box.com/M350-universal-mini-itx-enclosure
http://www.mini-box.com/I-O-shield-and-riser-card-for-D945GSEJT
along with the DIN rail mounts to
in my setup i use a joystick, and i load that using hidconfig/hidcomp.
if i run hidconfig it can see the joystick, so i think permissions are
right. but
when i run my machine i have this error:
..2012/01/06
16:56:49.243,2011,1,hiddevice.cpp:172,Error,hidcomp,HIDDevice,Error
reading HID
I looks like a timing issue. Gladevcp needs pins from hidcomp, but hidcomp
hasn't initialised completely yet. Have you tried the -W (or -Wn) option
with hidcomp?
See the man page for loadusr.
-Original Message-
From: Spiderdab [mailto:77...@tiscali.it]
Sent: Saturday, 7 January
My next atom board will probably be this one...
http://www.mitxpc.com/proddetail.asp?prod=MBNC9KDL2700
or a similar one based on the D2600 (which has been pulled from the site
because they aren't allowed to sell it till 15th Jan). The D2600 board is
1.8GHZ, and is a lower profile so it should
noticed it only has HDMI output.
-Original Message-
From: Frank Tkalcevic [mailto:fr...@franksworkshop.com.au]
Sent: Sunday, 8 January 2012 6:26 AM
To: 'Enhanced Machine Controller (EMC)'
Subject: RE: [Emc-users] Ideal Atom?
My next atom board will probably be this one...
http
It should be fine for EMC in terms of latency numbers, but I am reserved
about LPT port.
Is there any practical situation to make use of 2 LANs?
Not for me. I just love the mini-itx foot print, and how small we can make
emc machines, with a 5i20 PCI card.
The D945 single core board works
I've just googled for HDMI to VGA converter cables, and they seem cheap and
plentiful.
Is this just a plug in solution? Is the HDMI signal VGA compatible?
http://webcache.googleusercontent.com/search?q=cache:38ouTBEu2wYJ:w
ww
.mitxpc
I use a D945GSEJT (single core atom 1.6GHz) in that kind of configuration -
I've disabled X11, so I always boot to a command prompt. I have a KVM if I
need it. Jitter - 6873/6755. When running a desktop it glitches to about
15000.
I still haven't removed all unnecessary daemons. My plan is to
I use a D945GSEJT (single core atom 1.6GHz) in that kind of configuration
-
I've disabled X11, so I always boot to a command prompt. I have a KVM if
I
need it. Jitter - 6873/6755. When running a desktop it glitches to about
15000.
Interestingly, if I'm running latency-test then startx, my
This whole server/client/remote/x11 discussion has got me perplexed. Maybe
I've missed something, but I've been running my development environment on
headless boxes for years.
I work on a windows 7 box, and use Cygwin/X to connect to the unix boxes.
I run...
ssh -Y -l username hostname
to
Do you think the other mob are in danger of being lawyered by a company that
makes razors?
--
Keep Your Developer Skills Current with LearnDevNow!
The most comprehensive online learning library for Microsoft developers
Interestingly, if you google emc opensource, buried among all the
excellent enhanced machine controller articles, there is reference to the
other emc and their foray into open source. Maybe this is how they get
their google search rating up.
-Original Message-
From: Stephen Wille
I've just got a new motherboard with new generation CPU (Jetaway NC9KDL-2700
with Intel Atom D2700). Emc works fine, but because the chipset is new, I
can't get the lm-sensors to detect the hardware. I'd like to monitor CPU
and system temperatures, and control fan speeds.
If I get the latest
In AXIS_1 and AXIS_2 section, you have HOME defined twice. Once at 0, the
other at 10.0.
-Original Message-
From: Viesturs Lacis [mailto:viesturs.la...@gmail.com]
Sent: Sunday, 29 January 2012 2:08 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Homing
2012/1/28
So which version do you need? I've made my own revision 2 driver.
-Original Message-
From: Kirk Wallace [mailto:kwall...@wallacecompany.com]
Sent: Friday, 3 February 2012 2:51 PM
To: LinuxCNC Users List
Subject: [Emc-users] SJ200 VFD and Modbus
I'm trying to get my SJ200 VFD
I haven't considered a generic VFD or Modbus device driver, because not
only do the device functions vary widely, but so do implementations of the
Modbus standard.
Yes, I found that too. I built my code based on the GS2 module and
Michael's code.
Early on, I avoided using the GS2
That sounds like a nice method. I will try to implement that. Setting S to
zero
to stop material flow is good enough, seems that the dreaded ooze in my
case starts a few seconds after the extruder is stopped. (Thermal
expansion?) If I take care to move out of the way before that it seems to
be
Has anyone successfully run gremlin.py standalone (using gremlin-run) with a
lathe?
When I run it, it is always showing the XY plane, not the ZX plane. I've
tried setting self.current_view = 'y' (assuming this means view down the y
axis), but no matter what I set this to, it is always shows
The factory of the future:
http://www.youtube.com/embed/nd5WGLWNllA?rel=0
Almost. I still see humans on the assembly line.
--
Virtualization Cloud Management Using Capacity Planning
Cloud computing makes use of
If you are looking for more bug fixes and enhancements to do...
* The colour of the tool on the lathe is very dark and hard to see. I've
tried adjusting the colours in gremlin, but I only managed to make it
darker.
* As an enhancement, moving the font selection string into a function call
so
I think your program is just doing so too much. Axis will load your gcode,
then simulate the whole file to get the OpenGL preview. If you have lots of
little steps, it is going to take a while.
-Original Message-
From: gene heskett [mailto:ghesk...@wdtv.com]
Sent: Monday, 5 March
Don't forget GWiz
(http://wiki.linuxcnc.org/cgi-bin/wiki.pl?GWiz_-_A_Gcode_Wizard_Framework) -
it needs a screen shot - that page doesn't sell it well.
I've build some lathe wizards, and I've just converted my router (although I
usually use visual mill for cam) It is just waiting for someone to
I had a problem similar to this, including intermittent faulting, because I
didn't have HOME_FINAL_VEL set. It was moving from the index position, to 0
too fast. I can't remember if it was because I hadn't set the maximums yet,
or if it was the bug in joint mode, where an axis can exceed its
2 identical machines, installed from the same cd, one works, one does not.
The one that works uses display:10, the newer one that doesn't, tries to use
display:0.
display:10 is normally what I see when I ssh to a remote box. Display:0 is the
local machine's monitor/video card.
From
My gantry still has some spring in it. If I manually cut power, or fault,
the slaved axis move slightly, so when I try to power on again (F1/F2), it
immediately faults. I need to unhome, go back to joint mode and rehome, but
I can't because Axis disables the unhome menu options.
Is there any
More exotic ideas might involve two entry boxes and two submit
buttons...
How about defaulting to the current position in the text box, and adding a
Zero button that zeros and submits in one click.
--
Live Security
I was in the market for a mini-ITX motherboard at the beginning of the year.
I wanted that board, but it hadn't been released yet.
I ended up getting a D2700 based one...
http://www.mitxpc.com/proddetail.asp?prod=MBNC9KDL2700
I don't remember the numbers, but the latency was good.
I did have
I made a bellows out of manila to see if I could do it, and it turned
out well. Can anyone suggest a material for the final version?
Kirk Wallace
I used thin polypropylene sheet, 0.39mm thick. I got it from
my local art supply store. It needs to be scored for it to
fold properly, but if
I made a bellows out of manila to see if I could do it, and it turned
out well. Can anyone suggest a material for the final version?
Kirk Wallace
I used thin polypropylene sheet, 0.39mm thick. I got it from
... snip
The milky white appearance of the polypropylene was a
Sorry for coming in late on this, but there are actually two Drill Bit
Cities - the other one is Drill Bit City II, at
http://drillcity.stores.yahoo.net/. They have full and half sets of
everything, not just the special items. There's a link on the Drill Bit
City links page to II. I'm not sure
I've been trying to install EMC2 on Ubuntu 8.04.
I installed 8.04 without any problems. I ran update and all the updates
installed.
I then ran the emc sh install. It appeared to install fine.
When I rebooted and selected the rtai kernel, I get a prompt...
(initramfs)
and the following
Ok, I've solved it. In my BIOS I have an option...
Enhanced Mode Support On:
I had it set to P-ATA+S-ATA. I changed it to S-ATA. It worked. I don't
know why it worked for 8.04 regular kernel and not rtai. I have 2 sata hard
drives, and an IDE DVD.
I've been trying to install EMC2 on
I'm about to start converting my lathe to cnc and I am wondering how other
users of the 5i20 + 7i33 have wired it up.
I have some +/-10v servo controllers that I am planning to drive with the
5i20+7i33 combo. My computer is about 3 meters away. I was planning to
house the servos in an
The BBB CPU has internal encoder reading hardware, so that is a low CPU use
option.
Also, a USB pendant is generally a pretty low load.
Frank
-Original Message-
From: Jon Elson [mailto:el...@pico-systems.com]
Sent: Monday, 20 January 2014 12:01 PM
To: Enhanced Machine Controller
Post an enhancement request on the dev mailing list. There are lots of
developers out there that would like to contribute to linuxcnc but don't
because a lot of the required work requires in depth knowledge - ini file
enhancements should be a simple standalone task. Ini file access should be
For the TL;DR bunch, my question - when implementing these, should they have
smarts in them to prevent gouging or overloading the tool? Or is it assumed
that the operator/programmer is smart enough not to try something dangerous?
Detailed question.
I want to implement these as wizards. I
I was so annoyed that the estimates for my 3d printing jobs were so far off
(estimated 2 hours, took 8) that I modified the axis code. It looks at the
Velocity and acceleration of each axis and tries to calculate a more
accurate time. It only looks at moves - no G64 or probing. It isn't
estimated
run time, for G code and my first hacked sub routine
On 10/15/14 4:07 AM, Frank Tkalcevic wrote:
I was so annoyed that the estimates for my 3d printing jobs were so
far off (estimated 2 hours, took 8) that I modified the axis code. It
looks at the Velocity and acceleration of each
I just used a standard IDC connector and a bit of PCB to keep the 0.1
spacing...
http://www.franksworkshop.com.au/images/pogo_icp.jpg
-Original Message-
From: Kirk Wallace [mailto:kwall...@wallacecompany.com]
Sent: Thursday, 16 October 2014 6:51 AM
To: Enhanced Machine Controller
For the soldering issue, I am thinking that there are people on the list
that
already have the skill and tooling, and might be willing to run a batch or
two
for a nominal fee. Many hands make light work so if (big
IF) a batch of boards gets made, there may be an inquiry made for
soldering
If you're set on ethercat, you may want to look at an ethercat module
like...
Hilscher COMX-CA-RE
http://www.hilscher.com/products_details_hardware.html?p_id=P_4579e8138180c;
bs=15
Beckoff fb11xx http://www.beckhoff.de/english.asp?ethercat/et1100_et1200.htm
They are drop in modules available
The PoKeys55 docs claim that the device implements a standard USB HID
keyboard and joystick. Based on that, I'd expect it to just work with
hal_input. Is that not the case?
You are correct. It doesn't use the HID Descriptor reports, so generic
software can't query the device for its
The pokeys makers approached me to add support for it to hidcomp, but
given how little spare time I have, it was too much work.
What would be involved in getting it to work?
When I tested it I only tested the analog inputs then lost track of it for
a
while.
In their joystick mode, they
Parallel ports are effectively obsolete these days and finding a
motherboard with support is starting to confine selection. So this is
effectively meaning I have to use an obsolete machine that I am not
sure I could replace in a hurry.
Sounds like the NGX BlueBoard-LPC1768-H might be all
Sercos 3 was one example of the use of ethernet for real time control.
Another example is ethernet i/p. Again it uses standard ethernet
technology
and allows the use of switches between the host and slave. It all comes
down to timing. AB claims they do +/- 100 uS without modified hardware.
That's in there because I do 95% of my development on Windows. I usually
develop stuff on windows then move it across to linux when it's almost done.
I still haven't found a development environment I like. (tried eclipse,
qtcreator, but have reverted back to make and vim).
It can be removed.
).
Frank
-Original Message-
From: lloyd wilson [mailto:llwilso...@hughes.net]
Sent: Saturday, 5 March 2011 10:12 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] compiling hidcomp
On 03/04/2011 08:52 PM, Frank Tkalcevic wrote:
That's in there because I do 95
I got mine here...
http://www.eccentricengineering.com.au/
I use it on a 9x20 I just CNCed. I accidently got the programming wrong
turning 150mm diameter mild steel interrupted cut of 2mm depth, and it had
no problem.
There is a lot of overhang though and causes some movement with my AXA
I need to wind a coil for an RFID reader - about 90 turns, 5mm wide, 8
layers.
I have wound single layer coils before, but I was wondering if it is
possible to do multiple layers using G76 = canned threading cycle? Can I
use multiple G76 commands to lay the coil forward, then backward? Will the
after taking that video I started
tweaking acceleration and velocity and the arm is capable to deliver
1/min rapid speed of the controlled point
I can't wait for a video of that.
--
Achieve unprecedented app
I'm in the process of replacing one central computer with individual atom
based computers inside each electrical cabinet for my router, lathe and soon
mill.
I'm wondering if anyone is using a KVM (Keyboard/Video/Mouse switch box),
and what to look out for?
What is better, long runs of DVI or VGA?
I have a Hitachi SJ200 VFD that I will be hooking up to EMC. I'm just
wondering what the best combination of signals I should use to control, and
monitor it.
What it seems to lack, compared to my servo amplifiers, is an Enable line,
something that stops it from doing anything unless the Enable
that's proven a reliable solution
-m
Am 20.09.2011 um 23:29 schrieb Frank Tkalcevic:
I have a Hitachi SJ200 VFD that I will be hooking up to EMC. I'm just
wondering what the best combination of signals I should use to
control, and monitor it.
What it seems to lack, compared to my
When I connect 5v to the aux power connector on a 7i40 board, connected to a
5i20, the hard disk light on the PC is illuminated. Is this bad?
--
All of the data generated in your IT infrastructure is seriously valuable.
connector on 7i40
On Mon, 10 Oct 2011, Frank Tkalcevic wrote:
Date: Mon, 10 Oct 2011 09:11:15 +1100
From: Frank Tkalcevic fr...@franksworkshop.com.au
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC)
emc-users
I opened the first pdf and it has an article on pid tuning. It suggests
applying a square wave command and tuning from that. How hard is it to
generate a square wave in emc? Will this require hal trickery or can it be
done with GCode?
-Original Message-
From: Jan de Kruyf
I am setting up a gantry system with 4 axis. I have X,Y and Z set to home,
but my A doesn't have a home switch, so I set the home sequence to -1.
The issue (minor issue) is that I can't switch from joint mode to world mode
unless all axis are homed. I have to manually go to through the menus
thirst knowledge.
To: Enhanced Machine Controller (EMC) emc-
us...@lists.sourceforge.net
On 11 October 2011 07:15, Frank Tkalcevic fr...@franksworkshop.com.au
wrote:
I opened the first pdf and it has an article on pid tuning. It
suggests applying a square wave command and tuning from
-Original Message-
From: Thomas Powderly [mailto:tomp4...@gmail.com]
Sent: Monday, 17 October 2011 7:43 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] and now for something completely different---
visualizing EMC2 configurations
Kent,
On Sat, Oct 15, 2011
I'm having a problem with my Z axis config. I have the max velocity for
that axis set to 13 (mm/sec) which is 780 mm/min (slowed down until I tune
it). If I do a G0, it moves at 780. However, if I jog (z axis only), it
tries to run at 4800mm/min which is the max velocity of the x/y axis.
This
I suspect it has to do with having defined 6 coordinates and then you have
8
axis sections below. I don't know what exactly, what you have doesn't
seem
to violate anything in the manual and you have DEFAULT_VELOCITY set which
controls jog speed. But, I have seen odd behavior like what you
I assume that the Z moves under control? ie the commanded speed is
genuinely high, rather than it being an artefact of the PID loop?
That's right. I turned on full debug and I get a command like (from
memory)...
TELEOP_COMMAND 234,213, xspeed, yspeed, zspeed, etc
Which is showing the z jog
I can send you a patch file that shows what I did. It also disables the $
hotkey so I don't accidently switch modes with my fat fingers. It isn't
perfect. If you need to rehome, you need to press the home-all button twice
- I'm not sure why, but it is close enough.
I don't know if this was the
: Re: [Emc-users] Jog speed excedes axis max velocity
What is the patchfile to exactly? I would really like to be able to do
this as
well. -Tom
On Oct 31, 2011, at 4:29 PM, Frank Tkalcevic wrote:
I can send you a patch file that shows what I did. It also disables
the $ hotkey so I
We have the squaring part working. We send a simultaneous signal to each
Granite drive and it homes to a hard stop and comes off a fixed amount.
It is
repeatable to no worse than 0.002, often better (lte 0.001).
You can do exactly the same thing with EMC. If you did it with EMC, then
you can
You might try posting your query over in the CNCZone too.
Once you've settled on an approach I hope you'll provide pictures for
the rest of us to ooh and aah over :-)
I'll most likely try to get something quick and dirty done, then go from
there.
At first it won't be anything to
.
-Original Message-
From: Kent A. Reed [mailto:knbr...@erols.com]
Sent: Tuesday, 8 November 2011 4:57 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Engaver Tool Changing - an OT question
On 11/7/2011 3:59 AM, Frank Tkalcevic wrote:
You might try posting your query
that often. It would be loaded when emc starts and
stay running the whole time.
sam
On 12/2/2011 4:05 PM, Frank Tkalcevic wrote:
I had similar problems with an AVR32 running as a CDC device. It
turned out to be another program grabbing the port - a modem manager
(from memory). I used
I tried to get a fingerVU 436 (480x272) working...
http://www.soundgraph.com/fingervu436-feature-en
I wanted to stick it into a pendant.
All the USB monitors seem to use the displaylink drivers. You'll need to
google for the drivers and follow the instructions to install them. The
drivers
Frank (and Gary):
I like the basic idea of this monitor, although for another, non real-time
project, so I thought I'd read up on DisplayLink.
There is an open-source activity called freedesktop.org which apparently
is
working on the displaylink interface to Linux.
Quoting from
On Mon, 2009-03-09 at 11:25 -0700, Peter C. Wallace wrote:
... snip
Take a look at the Austria Microsystems chips
They have 12 bit magnetic absolute encoder chips less than
~$10.00 AFAICR
Dooh, now I remember, I brought this up before and you mentioned this
encoder. I seem to
My system has dual boot Ubuntu 8.04 and Windows.
How can I change the default system at boot time?
Gaston
I have mine set up so it default boots to the last one I selected. This
example is shown in the grub manual
http://www.gnu.org/software/grub/manual/grub.html#savedefault ...
I've just configured my first emc project, a 9x20 lathe conversion. I'm
using a large servo for the spindle - I'm hoping to be able to use it as a
4th axis for some light engraving down the track.
My problem - I've set up the servo for the spindle, but like a servo, it
responds imediately to
On Wed, May 06, 2009 at 04:37:07PM +1000, Frank Tkalcevic wrote:
I've just configured my first emc project, a 9x20 lathe
conversion. I'm
using a large servo for the spindle - I'm hoping to be able
to use it as a
4th axis for some light engraving down the track.
My problem - I've
did you test limit2 and limit3, or just limit3? I'm not sure whether
second-derivative limiting (since command is speed, I guess that makes
it a jerk limit) is useful for spindle speed, and it would be nice to
hear real-world results.
Just limit3. I used the basic motion equations s=vt and
My lathe CNC conversion uses a servo motor to drive the spindle. It is
4000ppr, with an index pulse, controlled by a 5i20 and 7i33. It uses a 1:3
pulley ratio. Can I set this up for threading?
I had a quick try, machining a simple test thread, but as I expected, using
a standard setup, I got
Sorry, a typo. I was using commanded speed. But the timedelay option
sounds more efficient.
-Original Message-
From: Jeff Epler [mailto:jep...@unpythonic.net]
Sent: Friday, 8 May 2009 12:38 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Emc-users Digest, Vol
the place. I used lowpass, and got good enough results.
Is there a
component that will smooth out a curve? A moving average?
Are you using HostMot2? HostMot2 has a much better velocity
output than the old M5I20 driver/firmware.
Yes, I'm using HostMot2. The velocity coming out
Hm, the hm2 encoder velocity output is supposed to be really smooth.
I'll double check it tonight. Any chance you can supply a
halscope trace of it looking bad on your machine?
I'm using 2.3.
Here's a trace of the commanded velocity (after going through limit3),
encoder velocity (*60) and
First, there's an index mask option in the hostmot2 firmware.
You set the -index-mask (and optionally -index-mask-invert)
bits to true, and the index will only be active when another
input is on. Connect that other input to the correct Index
Mask physical pin, and you have an encoder
First, there's an index mask option in the hostmot2 firmware.
You set the -index-mask (and optionally
-index-mask-invert) bits to
true, and the index will only be active when another input is on.
Connect that other input to the correct Index Mask
physical pin, and
you have an
Here's a trace of the commanded velocity (after going
through limit3),
encoder velocity (*60) and the lowpass output.
http://www.franksworkshop.com.au/img_bin/Velocity.png
The encoder scale is 12000; 12000 pulses representing 1
revolution.
The encoder velocity output is then
toolpath preview being displayed all grey, or on top of
other windows.
I don't know about the other issues you mentioned, but this
is usually caused by Desktop Effects, which Ubuntu enables by
default on certain Intel video chipsets even though they do
not work properly with
My PC doesn't power off when I do a poweroff or shutdown -P, it just
halts. I've searched the internet for solutions and they all seem to point
to acpi and apm. When I try to run these tools, they both say no acpi/apm
support built into the kernel. Is this a limitation of the emc2 rtai
kernel?
On Tue, 2009-05-12 at 15:30 -0400, Douglas Pollard wrote:
I don't know where to tell you to look but the metric gear info is
out there somewhere for little or no money.
I thought you where wrong here because I was getting nearly
goose eggs, but I tried Googling metric gear rack profile
Sorry I don't have a .dwg compatible CAD program, so I can't
view these
gear files. From the links I have received, it's turning out
that it's
not that difficult to generate the gear profile ounce you have the
pitch diameter and pitch determined, so the drawings might
not be all
Does that version support a lathe?
-Original Message-
From: Dave Engvall [mailto:dengv...@charter.net]
Sent: Wednesday, 20 May 2009 6:29 AM
To: Enhanced Machine Controller (EMC)
Subject: [Emc-users] Synergy for hobbyists
Hi all,
Ah, rumors, rumors ... well better than a
My first rotary axis was built using a harmonic drive gear box, mounted
directly on a Brushed DC motor
(http://www.franksworkshop.com.au/CNC/4thAxis/4thAxis.htm#assembly). The
gearbox is 100:1. I've only done light machining so far, but I think it
should be strong enough for my gantry mill. It
Is index homing working in the 5i20 hm2 drive, in particular the
SVST8_4.BIT file?
HM2 encoder index homing works (to the best of my knowledge),
though I dont think the hm2-servo config supports homing.
For proper home-on-index you probably want to use the
5i20/SVST8_4IM2.BIT
What difference does the index mask make? I'm using index
homing at
the moment with SVST8_4.BIT without the index mask.
Wow, cool! Is it working well for you?
Are you connecting the home switch in HAL to the index-enable
pin on the encoder? If so you're essentially doing index
Frank, can you please post your homing .ini and .hal on
pastebin.ca, and post a link on this mailing list?
Here are my files. They are for a lathe. Currently only the X axis uses
index homing. The configuration for this is the last few lines of the file.
It is based on the original
I have a pair of Yaskawa servo motors and drivers (servopaks) to run my
lathe. They are the Speed/Torque variety and I'm driving them with a mesa
analog driver, providing +/-10v. I'm unsure of how to tune my system, as
the servopaks have a collection of tuning parameters (and auto-tune
I have argued this with many German machinists and they always
come back that metric is scientific measurement because it
is a part
of the circumference of the world. That may matter to a
map maker but
I don't
That's very unscientific definition of metric system and
makes
I was Googleing for encoders when I found a bunch of radio
amateur web pages where people have made DIY encoders with
the following chip:
http://www.austriamicrosystems.com/eng/Products/Magnetic-Encod
ers/Rotary-Encoders/AS5040
Anyone tried it? It looks really nice even though it may be
You can get the magnets here:
https://www.hkcm.de/
Now I only need a supplier for one or two of those encoders.
I thought the austria microsystems itself sold them by piece,
but now they only list prices for 1000 pieces.
I got a couple from www.futureelectronics.com
(Other good news/bad news. I blew out the serialDAC, but had
a spare chip. I'm looking for advise on how to protect the
output op-amp:
http://www.wallacecompany.com/machine_shop/EMC2/serial_dac/ser
ial_dac_sch.png
I'm not sure if this is what you are looking for, but there was an example
Thanks for the link, Frank. I wish I were better at
electronics, then I would know what this circuit does. It
looks like the op-amps only have a 10kOhm resistor on their
outputs, which would limit the current going in or out of the
amp. This may offer current protection but maybe not
It sounds like there isn't a proper line termination character at the end of
the lines. I'm not sure what emc needs, probably a linefeed, and you
probably have a carriage return. An editor like vi should show this. If
not post the file as an attachment so we can see it.
-Original
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