ial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
>
>
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>
Heskett
> > > --
> > > "There are four boxes to be used in defense of liberty:
> > > soap, ballot, jury, and ammo. Please use in that order."
> > > -Ed Howdershelt (Author)
> > > If we desire respect for the law, we must first make the law respe
> Emc-users mailing list
> > > > > Emc-users@lists.sourceforge.net
> > > > > https://lists.sourceforge.net/lists/listinfo/emc-users
> > > >
> > > > ___
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&g
er and against Jo blocks and boring machine standards.
>
> Has anyone else tried these and how did you make it work? As always
> thanks in advance.
>
> Dave
>
>
> _______
> Emc-users mailing
> > >
> > > > Now if you do like Sam did for his hex milling you update the
> encoder.
> > > > But initially he was milling with about 60 teeth and Linux is more
> than
> > > > fine for that when power tapping etc. So 60 * 60 is 3600 Hz and the
>
a fiber optic cable
but a kilometers long optical isolator? The one the comes into my house is
sending data at gigahertz class speed.
>
>
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w, we must first make the law respectable.
> > - Louis D. Brandeis
> > Genes Web page <http://geneslinuxbox.net:6309/gene>
> >
> >
> > ___
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> >
, 2020 at 4:42 PM Gene Heskett wrote:
> On Thursday 30 April 2020 15:36:05 Chris Albertson wrote:
>
> > Voltage drop? @26AWG has 0.134 ohms per meter.It might matter if
> > you are running 20 meters of cable. As for connectors those
> > "aviation plugs" are good
ctor but expensive. Are
> not sure about any standard encoder cables but D-sub is readily available,
> really good and guess they are cheap.
>
>
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like a flexible shaft
coupler.
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ew motors I
might do a 20Hz loop but run the motor at 1KHz.
LinuxCNC with a Mesa card works sort of like this too. An FPGA is just
hardware gates
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1 (yes literally $1) microcontroller chip
I can tell the hardware step generator the step period in units of 0.001
uS. one nanosecond I get 10,000 times better resolution. I think the FPGA
based solutions do the same. That said, I doubt the nanosecond level
resolution of the step period is really ne
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t; attacks! So typical for your kind. How many patents are there under your
> name?
>
> Just the fact that you are top posting and hide behind incomplete name
> tell it all!
>
> --
> Rafael Skodlar
>
>
> ______
acy
> > hardware to run linuxcnc.
>
> Plenty available cheap and no reason to user newer.
>
>
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set it up with Cat 5 cable to start then
> switch to something made for flexing.
>
> DigiKey shows 3 pair and 6 pair but not 4 in a flex cable.
>
>
> Ed.
>
>
>
>
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ve to do.
>
> Jon
>
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>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make
all the OS libraries are archived by
> now and could be hard to find.
>
> Best regards,
> -- --
> Glenn
>
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; >
> > even use real time kernels etc. most of what I do is based on RHEL and
> > application specific RHEL 'flavors')
> >
> >
> > as I said, just my 2 cts,
> >
> >
> > Ron
> I study technologies while you watch sports...
>
> --
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>
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> > which shouldn't be hard as they are 2 1/2D parts.
> >
> >
> >
> >
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/
> >> Emc-users mailing list
> > >> Emc-users@lists.sourceforge.net
> > >> https://lists.sourceforge.net/lists/listinfo/emc-users
> > >>
> > >
> > > Peter Wallace
> > > Mesa Electronics
> > >
> > > (\__/)
> > > (='.'=) This is Bunny. Copy and paste bunny into your
> > > (")_(") signature to help him gain world domination.
> > >
> > >
> > >
> > >
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> > >
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> > >
> >
> > Peter Wallace
> > Mesa Electronics
> >
> > (\__/)
> > (='.'=) This is Bunny. Copy and paste bunny into your
> > (")_(") signature to help him gain world domination.
> >
> >
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
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n 3/26/20 1:34 PM, Bari wrote:
>
> > The term 3D printing also used to be a blanket term until it was
> > hijacked by the media and marketers to only mean CNC glue gun types of
> > 3D printers aka FDM/FFF.
>
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FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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graphic-datapack/?fbclid=IwAR0CAPMO2oHOLZyB07vBhdbLvAjUcQ6RiifnOZJDt6sdMrSV1MWL-2Y0bv8
>
> Hang tough, be careful.
>
> Dave
>
>
>
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Gene Heskett wrote:
> On Wednesday 18 March 2020 09:20:47 andy pugh wrote:
>
> > On Wed, 18 Mar 2020 at 05:33, Chris Albertson
> wrote:
> > > These were invented by the same people who make the "speakON"
> > > speaker jacks.These are the industry s
or the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
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s://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail
> >
> <#m_-5370750516292446803_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>
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ng list
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ly achieve the correct gearing with a GT2 drive belt.
>
> So the machine is indeed able to move in the XY direction.
>
>
>
>
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&g
ssary to achieve a fast boot
> time.
>
> I will have VNC running for configuration and testing. But no dedicated
> screen.
>
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o at most made one of these green boards with just small passive parts and
connectors on it. It takes just hours and it low risk then you "plug-in"
a STM32 based development board that acts as the brain.
https://github.com/chrisalbertson/NeatoLida
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n
> >
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
>
>
> ___
> Emc-u
> >
> > sam
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
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>
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> ___
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On Thu, Feb 13, 2020 at 11:43 AM Gene Heskett wrote:
> On Thursday 13 February 2020 12:51:26 Chris Albertson wrote:
>
> > When designing something new one must be VERY careful not to be one of
> > Henry Ford's customers.In an interview, someone asked Henry Ford
> &g
at 8:25 AM andy pugh wrote:
> On Fri, 14 Feb 2020 at 16:16, Chris Albertson
> wrote:
>
> >
> > If there are even 100 pulses per revolution and the spindle runs at 100K
> > RPM then we are talking about 1K or 10 MHz.
> >
>
> 100,000 rpm is _very_ fast f
f it. Sorry to be a bit slow on the uptake
> >
> > On Thu, Feb 13, 2020, 5:46 AM Chris Albertson >
> > wrote:
> >
> >> A sin and cos are 90 degrees apart. All you should need to do is
> threshold
> >> the signal and you have A/B quadrature.Many
t; Chris. I'm still learning electronics. Could you expand a bit on this
> please.
>
> Maybe draw a napkin sketch of it. Sorry to be a bit slow on the uptake
>
> On Thu, Feb 13, 2020, 5:46 AM Chris Albertson
> wrote:
>
> > A sin and cos are 90 degrees apart.
the
> man-hours needed. Even then the GUI wouldn't be able to handle the more
> esoteric setups. Are you willing to dedicate a year's work to the
> project? You could get a lot done in that time.
>
> Les
>
>
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much a glue but a part that is shaped by
the space it filles, hence the advice to cut a key or retaining grooves.
On Tue, Feb 11, 2020 at 11:56 AM Gene Heskett wrote:
> On Tuesday 11 February 2020 13:34:29 Chris Albertson wrote:
>
> > "JB Weld" Epoxy. It is a mixtu
ame.
>
> Les
>
>
>
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fense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
>
ign.com/3d-printing-cad/article/21122653/top-11-myths-of-cnc-machining
>
>
>
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wrote:
>
> Use the ethernet for IO and a USB-ethernet dongle for Network?
>
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se in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
> ___
> Emc-
ge.net/lists/listinfo/emc-users
>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we mus
hey are
> > correctly scheduled and guess this is not the case on an ordinary
> computer.
> >
> >
> > Guess NML would be a better choice for remote display.
> >
> >
> > > FreeRTOS sure is popular. Have you compared it to other open source
> > &
o be located
> someplace where it is convenient to wire all the axises from. So other than
> the difference in cost what does this $5 chip buy you?
>
> Alan
>
>
> > From: Chris Albertson
> > To: "Enhanced Machine Controller (EMC)" >
> > Cc:
> > B
I think the better plan is to move as much
"smarts" as possible as close to the physical motor as possible. So let
the motor driver figure out what rate to drive each otor so the targets are
reached.
Alan
>
> > From: Chris Albertson
> > Subject: Re: [Emc-users] Real-
even an iPhone is a good enough platform.
On Thu, Jan 23, 2020 at 11:32 AM Peter C. Wallace wrote:
> On Thu, 23 Jan 2020, Chris Albertson wrote:
>
> > Date: Thu, 23 Jan 2020 10:17:44 -0800
> > From: Chris Albertson
> > Reply-To: "Enhanced Machine Controller (EMC)&
>
> Les
>
>
>
>
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tement about no commercial use? Do some research
> instead of spouting off like the expert you aren't, Tormach makes some
> nice tabletop cnc machines, for a price of course, but that IS LinuxCNC
> behind a gui they wrote called PathPilot.
>
> Cheers, Gene Heskett
; forth a lot
>
>
> thanks,
>
>
> Ron
>
>
>
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_
of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
> _
;
> > ___
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A ground loop is then a single device is connected to ground more than
once. A good example is a motor driver. It might in a "power"
input called "+" and "-" with the minus side grounded to the AC mains
ground or a chassis frame ground. The in addition there is a
logic level control signa
$300 to a $100 400 lb
> winch. Found some candidates but haven't pulled out the card yet.
>
> Comments? Better ideas? Skyhook suggestions to help me handle this puppy
> since its too heavy for me? I hope its not too heavy for the mill.
der."
> > > -Ed Howdershelt (Author)
> > > If we desire respect for the law, we must first make the law
> respectable.
> > > - Louis D. Brandeis
> > > Genes Web page <http://geneslinuxbox.net:6309/gene>
> > >
> > >
> > > ___
."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
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&g
t can also do much more.
A PID loop runs inside this controller so you can set the velocity over the
interface or just send step/dir and know that the internal feedback will
make sure no steps are skipped.
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_
P do?
>
>
> thanks,
>
>
> Ron
>
>
>
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30 Henry Street
> Dalton, Ohio 44618
> Phone: (330)828-2105ext. 2031
>
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surprising how well even printed gears work and they are not so accurate
On Tue, Nov 26, 2019 at 11:02 AM andy pugh wrote:
>
> On Tue, 26 Nov 2019 at 19:41, Chris Albertson
> wrote:
>
> > With the conventional vertical spindle, you would need a wedge under
> > the a-axi
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l&pf_rd_p=0501877d-5f8c-4ec8-9861-e0476eecc53e&pf_rd_r=GFZ6P181ZWTHT3X6ZA1F&psc=1&refRID=GFZ6P181ZWTHT3X6ZA1F>
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> >
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> >
> > Cheers, Gene Heskett
>
y, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
> ____
; > atp
> > "A motorcycle is a bicycle with a pandemonium attachment and is
> > designed for the especial use of mechanical geniuses, daredevils and
> > lunatics."
> > � George Fitch, Atlanta Constitution Newspaper, 1912
> >
> >
> > __
tage drop (over the
40 foot 2-way length) would have been 1.3 volts at 0.5 amps. But now
with #18 the drop is 0.13 volts.
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r."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
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Try this driver, not bad for $5. Good documentation too. (They make
bigger ones too. I'm using some 15 amp drivers that are like these.)
https://www.pololu.com/product/2960
On Tue, Oct 22, 2019 at 4:49 PM Chris Albertson
wrote:
> Yes. Agree except not an ACTUAL 298. Get
t
> with enable high and opposite direction low.
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y/9/motion-control-modules I've bought a lot
of their stuff.
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7, 2019 at 6:17 PM Chris Albertson <
> albertson.ch...@gmail.com
> > >
> > wrote:
> >
> > > If you want better than 16-bits and 1KHz then you also are going to
> need
> > a
> > > very good quality analog signal conditioning and instrumentation
>
rement? in the 0 to about 500kg range.
>
> On Wed, Sep 18, 2019, 11:51 AM Chris Albertson
> wrote:
>
> > in any case, even with lower 16-bit precision, the most important part of
> > the design is the analog portion that sits between the load cell and the
> > A/D conver
his point what precision I need. I'll be
> determining that experimentally later. I will keep in mind what you have
> said, I'll deal with it after I get my hardware running.
>
>
> On Tue, Sep 17, 2019 at 6:17 PM Chris Albertson >
> wrote:
>
> > If you want b
se. As well as the ability to sample at the
> servo thread rate of 1 Khz.
>
>
> Thanks,
>Curtis
>
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r of nanoseconds at the
desited value.In practice you sample a fast clock or counter on each
encoder edge. Gives very accurate results even with poor encoders.
Chris Albertson
Redondo Beach, California
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rshelt (Author)
> > If we desire respect for the law, we must first make the law
> > respectable. - Louis D. Brandeis
> > Genes Web page <http://geneslinuxbox.net:6309/gene>
> >
> >
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>
> Cheers, Gene Heskett
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> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
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't find it either then I'm really no further ahead. So I'd rather
> > know
> > the why...
> > >
> > > Thanks
> > > John
> > >
> > >
> > >
> > >
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the law respectable.
> - Louis D. Brandeis
> Genes Web page <http://geneslinuxbox.net:6309/gene>
>
>
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to make sure the E stop
> doesn't
> > turn back on until I turn it on within linuxcnc.
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&
well do.
>
> John
>
>
> > -Original Message-
> > From: Chris Albertson [mailto:albertson.ch...@gmail.com]
> > Sent: July-27-19 8:58 AM
> > To: Enhanced Machine Controller (EMC)
> > Subject: Re: [Emc-users] Real time data write to file, unexpect
rk great though I get some problem with
> overrun though a single missed value sometimes does not matter to much. I
> think halsampler use a similar method, read pointer chasing a write
> pointer. In case of full FIFO old value are overwritten which
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and even worse when three or four rotary tale are
stacked as in say a robot shoulder joint
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he IP assignments and there is little chance to using the same IP twice.
On Tue, Jul 23, 2019 at 8:54 AM Mark Wendt wrote:
> On Tue, Jul 23, 2019 at 11:45 AM Chris Albertson
> wrote:
> >
> > 1) DHCP can in fact be "static". What you do is configure your DHCP
> >
works and has a lot less system
> overhead, along with the latency of the packet filtering? I'd stay
> away from iptables unless you really need to use it.
>
> Mark
>
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urce=link&utm_campaign=sig-email&utm_content=webmail
> >
> Virus-free.
> www.avast.com
> <
> https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail
> >
> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA
tics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
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t; = 33 333Hz counter rate
>
> With a /256 pic counter, roll-over will be at 130Hz or every 7.7ms
> Could Lcnc cope with that?
>
> Roland
>
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Chri
ari wrote:
> How often do you find one by HP that actually lets you turn off all the
> virtualization and power management in the BIOS? I haven't been lucky
> with finding one yet.
>
> On 7/3/19 12:22 PM, Chris Albertson wrote:
> > If what you
> > are looking for is
upply.com/computers/industrial/fanless/cl200-series/
> The CL210-G10 with a Mesa 7i92 seems an attractive choice. Has anyone tried
> this?
>
>
>
>
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al use of mechanical geniuses, daredevils and
> lunatics."
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>
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Chris
ks like an interesting project let me know, there is room for
more.
How is this related to LinuxCNC?Obviously there are many parts to be
made.
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