On Fri, Oct 29, 2010 at 06:58:23PM -0400, Stephen Wille Padnos wrote:
> >
> Now an AVR based doohickey that can have internal HAL-like signal
> connections between its peripherals - that would be something :)
That's where using an ATxmega AVR comes to the fore. They have up to
three quadratur
On Fri, Oct 29, 2010 at 05:21:04PM -0500, Igor Chudov wrote:
>
> I will try to find a couple of extra laptop style power supplies that
> fit it, and hope that this server will last me many years.
If it should also be reliably up, or at least be able to be brought down
gracefully in the event of p
Hi Kent;
I have wondered how SGI faired over the years.
A look at Wiki and WOW.
It looked like some awesome graphics near the end, especially
their larger systems.
I was using their IRIS 1000 - 3000 and the IRIS 4D (Baby steps).
But they were great by comparison to what was available otherwise.
Gene Heskett wrote:
> A
> water cooled anode that required deionized water in the coolant system
> because the tubes anode had 7200 volts on it. This tube was rated to make
> 85 kilowatts (sync tip peak) of power in the low vhf band, but our
> transmitter let it relax with its feet up on the
Andy Pugh wrote:
> On 29 October 2010 17:58, Stuart Stevenson wrote:
>
>
>> Is there a chip or reasonable board I can use to change the sine waves to
>> pulse or quadrature?
>>
>
> I suspect that the Pico Resolver converter might work, which I think
> is based on something like this
> htt
Chris Radek wrote:
> With your four
> signals maybe you just have the differential equivalent of mine?
>
Yes, and one of the advantages of that is it gives a clear indication if
the light bulb fails.
All 4 signals go the same way and you lose the differential nature of
the signals.
(I will b
Stuart Stevenson wrote:
> Gentlemen,
> I have a manual CMM with scales. The display box is very old and almost
> functional. I would like to replace it with EMC2. Simple enough except for
> the scale feedback. The scale feedback is four sine waves at 0, 90, 180 and
> 270. These are, I think, appr
--
Gary Fiber K8IZ
GROL PG-19-6691 with shipboard radar endorsement
Washington State resident
--
Nokia and AT&T present the 2010 Calling All Innovators-North America contest
Create new apps & games for the Nokia N8 for
On Friday, October 29, 2010 08:26:57 pm Kent A. Reed did opine:
> Andy Pugh wrote:
> > Even if Chris is right that there is no interpolation, at $20 an
> > Arduino is a very simple way to measure 6 analogue voltages, threshold
> > them, and pass it to digital.
>
> For those of us who grew up in t
Kirk Wallace wrote:
> On Fri, 2010-10-29 at 17:43 -0400, Kent A. Reed wrote:
> ... snip
>
>> For those of us who grew up in the middle of the last century, this is
>> the most amazing fact about today's microcontrollers.
>> ... I also
>> think about how many more things I could have achieved h
On Fri, 2010-10-29 at 17:43 -0400, Kent A. Reed wrote:
... snip
> For those of us who grew up in the middle of the last century, this is
> the most amazing fact about today's microcontrollers.
> ... I also
> think about how many more things I could have achieved had I not had to
> spend so much
A few weeks ago I asked buying a fanless, "no moving parts", low power
consumption server. I wanted to buy something that I can use to hold
critical data (CVS etc), be a nameserver, and be used for port
forwarding.
I was looking at various Atom based options.
After much asking, thinking and readi
On Fri, 2010-10-29 at 13:22 -0500, Chris Radek wrote:
... snip
> I'm not sure I know the right terminology to describe it, but they use
> a second piece of glass with the same pitch (?) lines in front of the
> master one. The second glass is at a slight angle so as you watch the
> light shining th
Andy Pugh wrote:
> Even if Chris is right that there is no interpolation, at $20 an
> Arduino is a very simple way to measure 6 analogue voltages, threshold
> them, and pass it to digital.
>
For those of us who grew up in the middle of the last century, this is
the most amazing fact about today's
On Fri, Oct 29, 2010 at 3:07 PM, Andy Pugh wrote:
> On 29 October 2010 19:32, Peter C. Wallace wrote:
>
> > The 5I23 can work with the resolver interface card (7I49) but this would
> need
> > firmware modifications for DC exitation like your scale uses (sine and
> cosine
> > signals with no carri
On Fri, Oct 29, 2010 at 3:49 PM, Chris Radek wrote:
> On Fri, Oct 29, 2010 at 02:54:19PM -0500, Stuart Stevenson wrote:
>
> > Yes the scales are optical as you describe. I changed the bulbs and set
> > the gap and angle for the greatest signal strength. I have no idea of the
> > basic resolution.
On Fri, Oct 29, 2010 at 02:54:19PM -0500, Stuart Stevenson wrote:
> Yes the scales are optical as you describe. I changed the bulbs and set
> the gap and angle for the greatest signal strength. I have no idea of the
> basic resolution. That is what I am trying to find out at this time.
Have you t
On 29 October 2010 19:32, Peter C. Wallace wrote:
> The 5I23 can work with the resolver interface card (7I49) but this would need
> firmware modifications for DC exitation like your scale uses (sine and cosine
> signals with no carrier)
At that point you could strip down my Arduino code to remov
On Fri, Oct 29, 2010 at 1:22 PM, Chris Radek wrote:
> On Fri, Oct 29, 2010 at 06:13:48PM +0100, Andy Pugh wrote:
> > On 29 October 2010 17:58, Stuart Stevenson wrote:
> >
> > > ?Is there a chip or reasonable board I can use to change the sine waves
> to
> > > pulse or quadrature?
> >
> > I suspe
On Fri, 29 Oct 2010, Stuart Stevenson wrote:
> Date: Fri, 29 Oct 2010 12:37:44 -0500
> From: Stuart Stevenson
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] scale/encoder
>
> On Fri, Oct 29, 2010 at 12:13 PM, Andy Pugh
On Fri, Oct 29, 2010 at 06:13:48PM +0100, Andy Pugh wrote:
> On 29 October 2010 17:58, Stuart Stevenson wrote:
>
> > ?Is there a chip or reasonable board I can use to change the sine waves to
> > pulse or quadrature?
>
> I suspect that the Pico Resolver converter might work
I'm pretty sure thes
On Fri, Oct 29, 2010 at 12:13 PM, Andy Pugh wrote:
> On 29 October 2010 17:58, Stuart Stevenson wrote:
>
> > Is there a chip or reasonable board I can use to change the sine waves
> to
> > pulse or quadrature?
>
> I suspect that the Pico Resolver converter might work, which I think
> is based on
John,
For some the obvious is obvious. For me the obvious is not necessarily
obvious. :)
At this time I was only trying to find the resolution of one of the sine
waves to see what I had to work with.
thanks
Stuart
On Fri, Oct 29, 2010 at 12:05 PM, John Prentice <
j...@castlewd.freeserve.co.u
On Fri, Oct 29, 2010 at 12:08 PM, Chris Radek wrote:
>
> I have a glass scale that gives a weird analog sine wavey signal. I
> was able to find some conditioned quadrature inside the amplifier box,
> and I ran that into a mesa card. I think there were only two sines 90
> degrees apart though, s
On 29 October 2010 17:58, Stuart Stevenson wrote:
> Is there a chip or reasonable board I can use to change the sine waves to
> pulse or quadrature?
I suspect that the Pico Resolver converter might work, which I think
is based on something like this
http://docs-europe.origin.electrocomponents.c
On Fri, Oct 29, 2010 at 11:58:10AM -0500, Stuart Stevenson wrote:
> Gentlemen,
> I have a manual CMM with scales. The display box is very old and almost
> functional. I would like to replace it with EMC2. Simple enough except for
> the scale feedback. The scale feedback is four sine waves at 0, 9
Stuart
Apologies if this is stating the obvious, but the existing board almost
certainly uses the amplitude of the Sin/Cos to interpolate the basic counts
and so get a useful accuracy out of the scale. Heidenhain often have a
ruling of 20 micrometres so with quadrature, discarding the analogue
Gentlemen,
I have a manual CMM with scales. The display box is very old and almost
functional. I would like to replace it with EMC2. Simple enough except for
the scale feedback. The scale feedback is four sine waves at 0, 90, 180 and
270. These are, I think, approx 1 volt magnitude. What can I us
2010/10/29 Steve Blackmore :
> Got an Asus AT5NM10-I motherboard to play with.
> Uses same chipset and processor as the Intel board.
>
> Latest live 10.04 distro CD doesn't work with it. It never boots, just
> stops on the first screen. Same CD will boot and install on other
> machines just fine, s
Thank you Jim,
I will try your recommendations as soon as possible and inform you about
process.
Caner.
On Fri, 2010-10-29 at 07:29 -0500, James Louis wrote:
> Caner,
>
> I had a similar situation with my servo amps and I found out that my system
> was a cascaded position-velocity loop. I sus
On 10/29/2010 09:27 AM, Kent A. Reed wrote:
>
> Steve:
>
> Listen to the voice of wisdom from Mark.
>
> I just booted an ASUS AT5NM10-I board, equipped with a 2GB Crucial
> memory module, into EMC2 LiveCD mode from a USB memory stick. Prior to
> booting I had disabled HyperThreading and set the par
So just now I said:
> I just booted an ASUS AT5NM10-I board, equipped with a 2GB Crucial
> memory module, into EMC2 LiveCD mode from a USB memory stick. Prior to
> booting I had disabled HyperThreading and set the parallel port to EPP
> mode using the onboard BIOS-setup utility.
>
> Once Ubuntu
Is there anyone here in Christchurch New Zealand running EMC2. If not anyone in
NZ ?
I wouldn't mind a chick chat. I need to get it up and running asap.
Cheer Wallace PH 3237449
--
Nokia and AT&T present the 2010 Calli
On 10/29/2010 3:27 AM, Steve Blackmore wrote:
> Got an Asus AT5NM10-I motherboard to play with.
> Uses same chipset and processor as the Intel board.
>
> Latest live 10.04 distro CD doesn't work with it. It never boots, just
> stops on the first screen. Same CD will boot and install on other
> mach
I had the same exact situation with inner velocity loop. I am sure
that it is fixable, but I did not have the time and instead went to a
torque loop. Velocity loop, if tuned properly, has better
characteristics, so one day I will try to go back to it.
i
On Fri, Oct 29, 2010 at 7:29 AM, James Loui
Caner,
I had a similar situation with my servo amps and I found out that my system was
a cascaded position-velocity loop. I suspect that is what yours is too. That
means that my external amp, which closes a velocity loop, is nested inside of
EMC2, which closes a position loop.
For your Toshib
It's just so hard to find good help these days... ;-)
Mark
On 10/28/2010 10:03 PM, Dave wrote:
> Apparently these new cameras do that..
>
> The camera I had back when I was 20 didn't do that.. Apparently we both
> need different cameras.
>
> Have you also noticed that they use less fabric in cl
Steve,
Any chance you can hook up a different CDROM or DVDROM to it? I've
had that problem before, not with Ubuntu distros, but with other
software. Sometimes weird little things can cause issues with booting
to the CDROM drive.
When you say "first screen" are you talking about the
Hi,
I am trying to test my Mesa boards (5i23 and 7i33) with my servo motors.
But there is an unexpected problem that EMC2 can't control servo. When I
jog, servo motor tuns with oscillation and when i stop jogging, it
continue oscillation some seconds more then stop. My servo motor has
resolver wit
Got an Asus AT5NM10-I motherboard to play with.
Uses same chipset and processor as the Intel board.
Latest live 10.04 distro CD doesn't work with it. It never boots, just
stops on the first screen. Same CD will boot and install on other
machines just fine, so it's not a media problem.
Official Ub
40 matches
Mail list logo
