Found new surplus 3-stack NEMA 42 motors (1850 oz-in)
Posted by
Murray Leshner
on 2000-03-01 21:55:47 UTC
I found 15 Sigma NEMA 42 motors, seller says 1850 oz in, still trying
straighten out data).
I ordered one. Anyone else interested...they're $275 + shipping (roughly
23.5 #)
Murray
-----Original Message-----
From: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
To: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
Date: Tuesday, February 29, 2000 6:42 AM
Subject: [CAD_CAM_EDM_DRO] Digest Number 384
straighten out data).
I ordered one. Anyone else interested...they're $275 + shipping (roughly
23.5 #)
Murray
-----Original Message-----
From: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
To: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
Date: Tuesday, February 29, 2000 6:42 AM
Subject: [CAD_CAM_EDM_DRO] Digest Number 384
>------------------------------------------------------------------------discussion of shop built systems in the above catagories.
>GET A NEXTCARD VISA, in 30 seconds! Get rates as low as 0.0%
>Intro or 9.9% Fixed APR and no hidden fees. Apply NOW!
>http://click.egroups.com/1/911/1/_/423600/_/951824559/
>------------------------------------------------------------------------
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
>To Unsubscribe, read archives, change to or from digest.____
>Go to: http://www.onelist.com/isregistered.cgi
>Log on, and you will go to Member Center, and you can make changes there.
>For the FAQ, go to http://www.ktmarketing.com/faq.html
>bill,
>List Manager
>------------------------------------------------------------------------
>
>There are 15 messages in this issue.
>
>Topics in today's digest:
>
> 1. RE: resonance and controllers
> From: "Harrison, Doug" <dharrison@...>
> 2. xyz table for sale?
> From: "Jim Fackert" <jfackert@...>
> 3. RE: Wonderboard PC interface original message!
> From: "Harrison, Doug" <dharrison@...>
> 4. RE: Wonderboard PC interface original message!
> From: "jguenthe" <jguenthe@...>
> 5. Re: re - Wonderboard PC interface
> From: "D.F.S." <dfs@...>
> 6. RE: DRO UPDATE
> From: "Terry May" <tmay@...>
> 7. Feedback wanted
> From: Charles Gallo <Charlie@...>
> 8. Re: RE: DRO UPDATE
> From: "A. G. Eckstein" <axtein@...>
> 9. DRO
> From: Charles Hopkins <chopkins@...>
> 10. Re: DRO
> From: "Tim Goldstein" <timg@...>
> 11. Re: DRO
> From: "Jim Geib" <jimg47@...>
> 12. For sale: two used Superior Electric 840 oz-in steppers
> From: "Multi-Volti Devices" <multi-volti@...>
> 13. Re: re - Wonderboard PC interface
> From: ptengin@...
> 14. Re: For sale: two used Superior Electric 840 oz-in steppers
> From: ptengin@...
> 15. Re: is my software stable?
> From: "Peter Smith" <peter@...>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 1
> Date: Mon, 28 Feb 2000 09:18:25 -0500
> From: "Harrison, Doug" <dharrison@...>
>Subject: RE: resonance and controllers
>
>
>
>> -----Original Message-----
>> From: Joe Vicars [SMTP:jvicars@...]
>> Sent: Friday, February 25, 2000 1:59 PM
>> To: CAD_CAM_EDM_DRO@onelist.com
>> Subject: [CAD_CAM_EDM_DRO] resonance and controllers
>>
>> From: Joe Vicars <jvicars@...>
>>
>> I don't understand how the software control contributed to the
>> resonance problem that Tim described. The software controller just
>> outputs a square wave of varying frequency. If you have control over
>> your instantaneous start, accel and decel, then you should be able to
>> find an operating range that works. What am I missing?
>>
> Some programs are not very good at accurately spacing the step
>pulses. The variation in timing shows up as harmonics and the effects are
>significant.
>
> Doug
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 2
> Date: Mon, 28 Feb 2000 10:08:02 -0500
> From: "Jim Fackert" <jfackert@...>
>Subject: xyz table for sale?
>
>Will the fellow who had the xyz router table with servos for sale please
>email me off list?
>
>Thanks,
>
>Jim Fackert
>jfackert@...
>
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>on
>Message: 3
> Date: Mon, 28 Feb 2000 15:20:27 -0500
> From: "Harrison, Doug" <dharrison@...>
>Subject: RE: Wonderboard PC interface original message!
>
>Yes, we did get a little carried away with this one. I did manage to get
>plenty of feedback, so much that I printed it into a big stack of paper
>(more trees died) and took it home to read over the weekend. Thanks to all
>who contributed.
>
>I still have some more research to do before I commit to the final
>specification. Perhaps I should clarify my goals, which have not changed.
>The plan was to design a board with enough dummyproofing to use in
>industrial applications yet simple enough to be inexpensive and quick to
>build. I see the potential to use this board as an interface with several
>parallel port step motor programs. However, CNCPro is the one program I
>feel comfortable enough with to support for retrofits. That is the program
>I am designing the board for. This is not meant to be a negative comment
>other software and I would be happy to work with developers of suchprograms
>if they wish to communicate their wants and needs. The info I have on mostSome
>of them is inadequate to work with.
>
>
>The preliminary specification looks like this:
>
>1. Separate board - not in PC. ( I may change this again if I succeed in
>solving the DC-DC converter issue. Shucks! I might even go both ways.)
>2. All input and output lines optoisolated.
>3. All optos socketed.
>4. Selection of optos to allow interchangability between cheap and high
>speed optos for step/direction lines.
>5. Sockets for optional SS relays on control lines.
>6. On board 5V power.
>7. DB25 and screw term capable input - your choice
>8. DB9 and screw term options for step/dir lines.
>9. Screw terms for limits, e-stop and control outs.
>
>Several of you noted that it should not be necessary to use optos to drive
>the step/dir amp inputs because most drivers are already optoisolated.
>of them aren't. But the main reason I stuck to my guns here is that therejust
>is a tendency (and I've seen it) to use the same 5V supply for the driver
>optos as is used for the limit switches. The drivers are protected but the
>parallel port is tied to the limit lines. Not good. The data out optos
>will be supplied by the PC 5V supply. Yes, I know this means more than
>a single cable from the PC - another argument for making the board fit intoclarify.
>a PCI/ISA slot.
>
>Doug
>
>> -----Original Message-----
>> From: Dean Sala [SMTP:adsala@...]
>> Sent: Friday, February 25, 2000 8:25 PM
>> To: CAD_CAM_EDM_DRO@onelist.com
>> Subject: [CAD_CAM_EDM_DRO] Wonderboard PC interface original message!
>>
>> From: "Dean Sala" <adsala@...>
>>
>> It seems as though this thread has went off on a tangent. I originally
>> replied to Doug about a parrallel interface card that I had designed to
>> work with CNCpro. But it seemed to never appear on the message board
>> except in Doug's reply to it. The reply is in the "Interface Update"
>> thread. Anyway, It seems as though some of you are getting confused
>> between what Doug is proposing and what I have done. So I want to
>> I designed an proto typed external interface card to work with CNCpro. I-
>> am building a homebrew CNC system so my design is catered towards that. I
>> believe Doug has different requirements and is building a more robust
>> board catered towards industrial use. Am I right? I'm not completely
>> clear about his requirements yet. But this is what I wrote to him.
>>
>>
>> Here is my original message to the "Interface update" thread.
>>
>> -------------------------------------------------------------------------
>> ----------------------------------------------------completely
>> Doug,
>> It's real great that you are trying to resolve this problem. I
>> agree that we need some sort of breakout box that could get us up tospeed
>> faster. With an on board 5vPS, relays, screw in terminals and such. Itto
>> just so happens that I have already designed a proto type of this board
>> work with CNCpro. Except that it does not use optoisolation on theULN2003a's
>> board.
>> I already have optoisolation on board my step drivers.
>>
>> The proto type plugs into the parrallel port via cable. It has it's own
>> DB25 connector on one side and has a series of screw terminals on the
>> other.
>> It consists of a SN74S244 hex schmit trigger driver to drive the step and
>> direction data (3 or 4 axis or whatever)into the Step motor drivers. The
>> auxillary outputs, 3 in all so far (CNCPro at least) go through
>> (that can be parralleled for more current) to drive 1amp 5v relays.-
>> Also,
>> the homing inputs are hooked up to IR switches with their own terminal
>> block. The other inputs are just tied high through 4.7ks. I am still
>> working on the design and am thinking about making it more universal for
>> other parrallel port NC programs that aren't as configurable as CNCpro.
>> But
>> first I'm keeping it simple. I'm sorry for not getting ideas from you
>> guys
>> but now I have a feeling what you want. Are you sure you need
>> optoisolation
>> on the board too? I can add them right to the output of the SN74S244 but
>> then the opto isolators would be driving opto isolators. Maybe I can put
>> a
>> switch selector to bypass opto isolation if the step drivers have them.
>>
>> Possible enhancements: On board 5V power supply(otherwise supply external
>> 5v
>> PS). Connectors to connect 120v to stepper power supply with fuses etc.
>> Diagnostic LEDs connected to various outputs. Connectors for main power
>> switch and power light. Oh, limit switch connectors tied to turn off
>> stepper PS. There you have it! All-in-one wonder board!
>>
>> About using the parrallel port for drive LED's....you should sink them of
>> course but it's always better to put a buffer inline like an S series TTL
>> driver which can source 28ma and sink 64ma perfect for this situation,
>> more
>> noise resistant and just what their made for. This way you don't have to
>> worry about how much power the parallel port can provide.
>>
>> Good luck
>> Dean
>>
>> -------------------------------------------------------------------------
>> -------------------------------------------------------------____
>>
>> Please read Dougs reply in the "Interface Update" thread if you are
>> interested in his comments. It is a message stored under his name
>>
>> If you have any questions about my design please reply. I left a few
>> things out of the above description.
>>
>> Thanks
>> Dean Sala
>>
>>
>>
>>
>>
>>
>> [Non-text portions of this message have been removed]
>>
>>
>> ------------------------------------------------------------------------
>> Shabang!com is the place to get your FREE eStore, Absolutely FREE
>> Forever. If you have any desires to sell your products or services
>> online, or you want to expand your customer base for FREE, Come check
>> out Shabang!com FREE eStores!
>> http://click.egroups.com/1/1299/2/_/423600/_/951528211/
>> ------------------------------------------------------------------------
>>
>> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
>> discussion of shop built systems in the above catagories.
>> To Unsubscribe, read archives, change to or from digest.
>> Go to: http://www.onelist.com/isregistered.cgi
>> Log on, and you will go to Member Center, and you can make changes there.
>> For the FAQ, go to http://www.ktmarketing.com/faq.html
>> bill,
>> List Manager
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>on
>Message: 4
> Date: Mon, 28 Feb 2000 15:48:51 -0500
> From: "jguenthe" <jguenthe@...>
>Subject: RE: Wonderboard PC interface original message!
>
>Doug,
>
>So what if it gets it's 5v supply from the PC and requires another cable.
>It would seem to me that it could also get the 5v from a wall wort or some
>other source besides the host PC, therefore my vote is for a separate board
>and optional additional power supply. This way if space is a problem and
>your host is a laptop, you could get the 5v from another source.
>
>John Guenther
>
>-----Original Message-----
>From: Harrison, Doug [mailto:dharrison@...]
>Sent: Monday, February 28, 2000 3:20 PM
>To: 'CAD_CAM_EDM_DRO@onelist.com'
>Subject: RE: [CAD_CAM_EDM_DRO] Wonderboard PC interface original message!
>
>From: "Harrison, Doug" <dharrison@...>
>
>Yes, we did get a little carried away with this one. I did manage to get
>plenty of feedback, so much that I printed it into a big stack of paper
>(more trees died) and took it home to read over the weekend. Thanks to all
>who contributed.
>
>I still have some more research to do before I commit to the final
>specification. Perhaps I should clarify my goals, which have not changed.
>The plan was to design a board with enough dummyproofing to use in
>industrial applications yet simple enough to be inexpensive and quick to
>build. I see the potential to use this board as an interface with several
>parallel port step motor programs. However, CNCPro is the one program I
>feel comfortable enough with to support for retrofits. That is the program
>I am designing the board for. This is not meant to be a negative comment
>other software and I would be happy to work with developers of suchprograms
>if they wish to communicate their wants and needs. The info I have on mostSome
>of them is inadequate to work with.
>
>
>The preliminary specification looks like this:
>
>1. Separate board - not in PC. ( I may change this again if I succeed in
>solving the DC-DC converter issue. Shucks! I might even go both ways.)
>2. All input and output lines optoisolated.
>3. All optos socketed.
>4. Selection of optos to allow interchangability between cheap and high
>speed optos for step/direction lines.
>5. Sockets for optional SS relays on control lines.
>6. On board 5V power.
>7. DB25 and screw term capable input - your choice
>8. DB9 and screw term options for step/dir lines.
>9. Screw terms for limits, e-stop and control outs.
>
>Several of you noted that it should not be necessary to use optos to drive
>the step/dir amp inputs because most drivers are already optoisolated.
>of them aren't. But the main reason I stuck to my guns here is that therejust
>is a tendency (and I've seen it) to use the same 5V supply for the driver
>optos as is used for the limit switches. The drivers are protected but the
>parallel port is tied to the limit lines. Not good. The data out optos
>will be supplied by the PC 5V supply. Yes, I know this means more than
>a single cable from the PC - another argument for making the board fit intoclarify.
>a PCI/ISA slot.
>
>Doug
>
>> -----Original Message-----
>> From: Dean Sala [SMTP:adsala@...]
>> Sent: Friday, February 25, 2000 8:25 PM
>> To: CAD_CAM_EDM_DRO@onelist.com
>> Subject: [CAD_CAM_EDM_DRO] Wonderboard PC interface original message!
>>
>> From: "Dean Sala" <adsala@...>
>>
>> It seems as though this thread has went off on a tangent. I originally
>> replied to Doug about a parrallel interface card that I had designed to
>> work with CNCpro. But it seemed to never appear on the message board
>> except in Doug's reply to it. The reply is in the "Interface Update"
>> thread. Anyway, It seems as though some of you are getting confused
>> between what Doug is proposing and what I have done. So I want to
>> I designed an proto typed external interface card to work with CNCpro. I-
>> am building a homebrew CNC system so my design is catered towards that. I
>> believe Doug has different requirements and is building a more robust
>> board catered towards industrial use. Am I right? I'm not completely
>> clear about his requirements yet. But this is what I wrote to him.
>>
>>
>> Here is my original message to the "Interface update" thread.
>>
>> -------------------------------------------------------------------------
>> ----------------------------------------------------completely
>> Doug,
>> It's real great that you are trying to resolve this problem. I
>> agree that we need some sort of breakout box that could get us up tospeed
>> faster. With an on board 5vPS, relays, screw in terminals and such. Itto
>> just so happens that I have already designed a proto type of this board
>> work with CNCpro. Except that it does not use optoisolation on theULN2003a's
>> board.
>> I already have optoisolation on board my step drivers.
>>
>> The proto type plugs into the parrallel port via cable. It has it's own
>> DB25 connector on one side and has a series of screw terminals on the
>> other.
>> It consists of a SN74S244 hex schmit trigger driver to drive the step and
>> direction data (3 or 4 axis or whatever)into the Step motor drivers. The
>> auxillary outputs, 3 in all so far (CNCPro at least) go through
>> (that can be parralleled for more current) to drive 1amp 5v relays.-
>> Also,
>> the homing inputs are hooked up to IR switches with their own terminal
>> block. The other inputs are just tied high through 4.7ks. I am still
>> working on the design and am thinking about making it more universal for
>> other parrallel port NC programs that aren't as configurable as CNCpro.
>> But
>> first I'm keeping it simple. I'm sorry for not getting ideas from you
>> guys
>> but now I have a feeling what you want. Are you sure you need
>> optoisolation
>> on the board too? I can add them right to the output of the SN74S244 but
>> then the opto isolators would be driving opto isolators. Maybe I can put
>> a
>> switch selector to bypass opto isolation if the step drivers have them.
>>
>> Possible enhancements: On board 5V power supply(otherwise supply external
>> 5v
>> PS). Connectors to connect 120v to stepper power supply with fuses etc.
>> Diagnostic LEDs connected to various outputs. Connectors for main power
>> switch and power light. Oh, limit switch connectors tied to turn off
>> stepper PS. There you have it! All-in-one wonder board!
>>
>> About using the parrallel port for drive LED's....you should sink them of
>> course but it's always better to put a buffer inline like an S series TTL
>> driver which can source 28ma and sink 64ma perfect for this situation,
>> more
>> noise resistant and just what their made for. This way you don't have to
>> worry about how much power the parallel port can provide.
>>
>> Good luck
>> Dean
>>
>> -------------------------------------------------------------------------
>> -------------------------------------------------------------____
>>
>> Please read Dougs reply in the "Interface Update" thread if you are
>> interested in his comments. It is a message stored under his name
>>
>> If you have any questions about my design please reply. I left a few
>> things out of the above description.
>>
>> Thanks
>> Dean Sala
>>
>>
>>
>>
>>
>>
>> [Non-text portions of this message have been removed]
>>
>>
>> ------------------------------------------------------------------------
>> Shabang!com is the place to get your FREE eStore, Absolutely FREE
>> Forever. If you have any desires to sell your products or services
>> online, or you want to expand your customer base for FREE, Come check
>> out Shabang!com FREE eStores!
>> http://click.egroups.com/1/1299/2/_/423600/_/951528211/
>> ------------------------------------------------------------------------
>>
>> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
>> discussion of shop built systems in the above catagories.
>> To Unsubscribe, read archives, change to or from digest.
>> Go to: http://www.onelist.com/isregistered.cgi
>> Log on, and you will go to Member Center, and you can make changes there.
>> For the FAQ, go to http://www.ktmarketing.com/faq.html
>> bill,
>> List Manager
>
>------------------------------------------------------------------------
>GET A NEXTCARD VISA, in 30 seconds! Get rates
>as low as 0.0% Intro APR and no hidden fees.
>Apply NOW!
>http://click.egroups.com/1/967/1/_/423600/_/951769098/
>------------------------------------------------------------------------
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
>discussion of shop built systems in the above catagories.
>To Unsubscribe, read archives, change to or from digest.
>Go to: http://www.onelist.com/isregistered.cgi
>Log on, and you will go to Member Center, and you can make changes there.
>For the FAQ, go to http://www.ktmarketing.com/faq.html
>bill,
>List Manager
>
>
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>all
>Message: 5
> Date: Mon, 28 Feb 2000 14:45:41 -0700 (MST)
> From: "D.F.S." <dfs@...>
>Subject: Re: re - Wonderboard PC interface
>
>>
>> From: "Harrison, Doug" <dharrison@...>
>>
>> Yes, we did get a little carried away with this one. I did manage to get
>> plenty of feedback, so much that I printed it into a big stack of paper
>> (more trees died) and took it home to read over the weekend. Thanks to
>> who contributed.changed.
>>
>> I still have some more research to do before I commit to the final
>> specification. Perhaps I should clarify my goals, which have not
>> The plan was to design a board with enough dummyproofing to use inseveral
>> industrial applications yet simple enough to be inexpensive and quick to
>> build. I see the potential to use this board as an interface with
>> parallel port step motor programs. However, CNCPro is the one program Iprogram
>> feel comfortable enough with to support for retrofits. That is the
>> I am designing the board for. This is not meant to be a negative commenton
>> other software and I would be happy to work with developers of suchprograms
>> if they wish to communicate their wants and needs. The info I have onmost
>> of them is inadequate to work with.in
>>
>Here is the design I threw together over the weekend.
>It is not final, it is a starting point only.
>There is some serious proofreading and checking to be done, but the basic
>interface is all there.
>I'm out of town this week.
>I DO have the design and the free design package with me (Easy Trax)
>The problem, is on my laptop, it can only run in 640X480 Mode and
>That is only shown as about a 4" X 6" rectangle.
>I'll be seriously limited in any REAL work on in.
>
>I can generate Postscript files of the board.
>I have no real way to generate an image given the current situation.
>If anyone can convert it, and post is someplace everyone can see it.
>let me know.
>
>>
>> The preliminary specification looks like this:
>>
>> 1. Separate board - not in PC. ( I may change this again if I succeed
>> solving the DC-DC converter issue. Shucks! I might even go both ways.)drive
>My board is external to allow lots of board space to add custom circuits.
>
>> 2. All input and output lines optoisolated.
>My design will use opto-isolators on the Board to PC interface.
>The Board to device interface should probably have them where
>damage is likely to happen as well.
>I'll need about 20, about 11 outbound and 9 inbound to the PC.
>
>> 3. All optos socketed.
>I figured on socketing all the chips.
>
>> 4. Selection of optos to allow interchangability between cheap and high
>> speed optos for step/direction lines.
>The 17 Cent parts BG Micro has looked plenty fast for anythink you will
>ever be able to spit out of a PC.
>
>> 5. Sockets for optional SS relays on control lines.
>I have PC mount Simgle pole Double throw Relays I planned to use.
>I don't have sockets for them, but leaving holes for them along with
>a big array of space to install them and wire them where appropriate
>seems reasonable.
>What do you mean by "SS" relay?
>
>> 6. On board 5V power.
>I figure the power and voltage requirements could vary tremendously
>depending on what a person wanted to install as far as external
>drive and interfaces.
>110 or 220V are very likely to be used by some people.
>
>I figured on running AC straight to the box, and installing a
>surplus regulated power supply in the box, to leave all the options
>open.
>BG Micro, all electronics amd electronics goldmine all have a
>good selection of regulated power supplies for under 10 bucks,
>many are universal and can take anything from 90 - 250 Volts.
>
>> 7. DB25 and screw term capable input - your choice
>Mine has a 2 row 26 pin connector to the computer.
>I have both 25 pin Din and 26 pin header connectors that simply crimp
>on ribon cable.
>Cut the cable to length and crimp the ends on.
>
>Of course everyone has the option to crimp whatever type of connector
>they want on the other end, even if it only extends to a connector
>mounted on the outside of the case.
>
>For the IO ports, I suggest dual connectors designed onto the board
>and people can install the type they want. Ie. a standard header, and
>holes to mount whatever readily avalible type of screw connector
>we select.
>I DO have some, but they are big, they take crim on spade type
>connectors. There are 3 lugs on each pin, they are held down
>by a screw, you could always remove the screw, toss the spades and
>connect the wire to the screw.
>
>> 8. DB9 and screw term options for step/dir lines.
>Good idea, both designed onto the board, install whatever you want.
>
>> 9. Screw terms for limits, e-stop and control outs.
>Same as above.
>>
>> Several of you noted that it should not be necessary to use optos to
>> the step/dir amp inputs because most drivers are already optoisolated.Some
>> of them aren't. But the main reason I stuck to my guns here is thatthere
>> is a tendency (and I've seen it) to use the same 5V supply for the driverthe
>> optos as is used for the limit switches. The drivers are protected but
>> parallel port is tied to the limit lines. Not good. The data out optosjust
>> will be supplied by the PC 5V supply. Yes, I know this means more than
>> a single cable from the PC - another argument for making the board fitinto
>> a PCI/ISA slot.____
>My design would isolate all the PC lines at the point the enter from
>and exit to the PC. That should protect the PC.
>People could then isolate whatever IO From they board they considered
>necessart to protect the "Wonderboard".
>
>I would just as soon keep the board outside of the PC case.
>
>The ISA board will now work with Laptops, Microchannel PCs and many
>people would be afraid to install it inside the case anyway.
>
>All the Status and Diagnostic LEDs I have designed in, are mounted
>on the board itself. They would need to be run outside the PC and be
>mounted in a project case of some sort.
>
>Marc
>BTW. we are still under 10 bucks in parts.
>Granted, additions will add to that cost, but the basic board is under
>10, plus a power supply, and whatever case people want.
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 6
> Date: Mon, 28 Feb 2000 23:56:43 -0000
> From: "Terry May" <tmay@...>
>Subject: RE: DRO UPDATE
>
>Art,
> Just wanted to tell I have been looking at your website, great
>pictures!! It really helps to visualize your setup as you have been
>discribing it on the list. I hope my DRO turns out to be half as good
>as yours.
> Just a quick update from my shop, I didn't have any 7414's or the
>decrete transistors that Steve Linsay used on my bench so I just
>played around a bit. Hooked up the encoders to my scope and checked
>out the waveform and then used a freq counter to do the same. All the
>encoders look like they are working fine so after work tomorrow I
>will pickup some chips at Radio Shack and put together a board.
> Concerning the discussions about wires/cables for the setup, I have
>lots of good parts left over from a dearly departed HP plotter.
>Amoung the goodies are all the wires used to move the pen holder, I
>think they will be long enough for the Y and Z axis' of my mill/drill
>if not the x axis.
> As I was playing with the encoder still hooked to the motor and
>reading it with the freq counter, I realized that just one channel
>out of a 1000 line encoder is a very nice division factor for a
>tach????. I think I will experiment with that a little also.
> Thanks again for sharing your experiences and your website!
>Terry May
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 7
> Date: Mon, 28 Feb 2000 18:59:48 -0500
> From: Charles Gallo <Charlie@...>
>Subject: Feedback wanted
>
>Hi,
> I was just wondering is anyone has gotten a chance to look at Stepster
>Build 11?
>
>
>Charlie
>
>-->
>RKBA!
>PGP Fingerprint: 7218 67D7 54B8 EFAF 67B7 4FED 7AC5 3687 492C 7382
>PGP Key at http://www.thegallos.com/pgp.htm
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 8
> Date: Mon, 28 Feb 2000 19:31:06 -0500
> From: "A. G. Eckstein" <axtein@...>
>Subject: Re: RE: DRO UPDATE
>
>Terry,
>Thanks for the words of encouragement. I need that and hope my little bit
>will help. I appreciate all the words that I have gotten on the site and as
>things progress, will try to update it. My long term goal is to get to the
>magical resolution of 0.0001"
>Actually, when I started the goal was to get accuracy to 0.001" with no
>backlash. I have far exceeded that but now it is a challange.
>
>Please let me know if I can help further.
>
>Art
>
>At 11:56 PM 02/28/2000 -0000, you wrote:
>>From: "Terry May" <tmay@...>
>>
>>Art,
>> Just wanted to tell I have been looking at your website, great
>>pictures!! It really helps to visualize your setup as you have been
>>discribing it on the list. I hope my DRO turns out to be half as good
>>as yours.
>> Just a quick update from my shop, I didn't have any 7414's or the
>>decrete transistors that Steve Linsay used on my bench so I just
>>played around a bit. Hooked up the encoders to my scope and checked
>>out the waveform and then used a freq counter to do the same. All the
>>encoders look like they are working fine so after work tomorrow I
>>will pickup some chips at Radio Shack and put together a board.
>> Concerning the discussions about wires/cables for the setup, I have
>>lots of good parts left over from a dearly departed HP plotter.
>>Amoung the goodies are all the wires used to move the pen holder, I
>>think they will be long enough for the Y and Z axis' of my mill/drill
>>if not the x axis.
>> As I was playing with the encoder still hooked to the motor and
>>reading it with the freq counter, I realized that just one channel
>>out of a 1000 line encoder is a very nice division factor for a
>>tach????. I think I will experiment with that a little also.
>> Thanks again for sharing your experiences and your website!
>>Terry May
>
>OLDER THAN DIRT
>
>Country Bubba
>
>(Actually the inventor of Country and Bubba)
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 9
> Date: Mon, 28 Feb 2000 20:53:13 -0500
> From: Charles Hopkins <chopkins@...>
>Subject: DRO
>
>Can someone point me to Tom Kulaga's DRO application program?
>
>Thanks
>
>Charles Hopkins
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 10
> Date: Mon, 28 Feb 2000 19:09:58 -0700
> From: "Tim Goldstein" <timg@...>
>Subject: Re: DRO
>
>Try http://www.mcs.net/~kulaga/dro.html
>
>Tim
>[Denver, CO]
>
>> Can someone point me to Tom Kulaga's DRO application program?
>>
>> Thanks
>>
>> Charles Hopkins
>
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 11
> Date: Mon, 28 Feb 2000 22:13:20 -0500
> From: "Jim Geib" <jimg47@...>
>Subject: Re: DRO
>
>
>This is the link to Tom's page that I have.
>
>http://www.mcs.net/~kulaga/dro.html
>
>Jim Geib
>Mansfield, Ohio
>----- Original Message -----
>From: "Charles Hopkins" <chopkins@...>
>To: <CAD_CAM_EDM_DRO@onelist.com>
>Sent: Monday, February 28, 2000 8:53 PM
>Subject: [CAD_CAM_EDM_DRO] DRO
>
>
>> From: Charles Hopkins <chopkins@...>
>>
>> Can someone point me to Tom Kulaga's DRO application program?
>>
>> Thanks
>>
>> Charles Hopkins
>>
>>
>> ------------------------------------------------------------------------
>> GET A NEXTCARD VISA, in 30 seconds! Get rates
>> as low as 0.0% Intro APR and no hidden fees.
>> Apply NOW!
>> http://click.egroups.com/1/967/1/_/423600/_/951789236/
>> ------------------------------------------------------------------------
>>
>> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
>discussion of shop built systems in the above catagories.
>> To Unsubscribe, read archives, change to or from digest.
>> Go to: http://www.onelist.com/isregistered.cgi
>> Log on, and you will go to Member Center, and you can make changes there.
>> For the FAQ, go to http://www.ktmarketing.com/faq.html
>> bill,
>> List Manager
>>
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 12
> Date: Mon, 28 Feb 2000 22:27:55 -0500
> From: "Multi-Volti Devices" <multi-volti@...>
>Subject: For sale: two used Superior Electric 840 oz-in steppers
>
>Hello:
>
>In my quest for the mother-of-all-steppers (haven't found any NEMA 66, had
>to settle for a NEMA 42), I found a seller who will only sell three motors.
>
>I only want one (sound familiar?), but he won't sell me just one because he
>anticipates most machine users want three axis capability.
>
>He says the 840 oz-in motors are used, not new. $225 each plus shipping. I
>guess the simplest thing is for me to buy all three, so someone doesn't
>skunk me by buying all three.
>
>Anyone need two hefty motors so I can buy the third?
>
>Murray
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 13
> Date: Tue, 29 Feb 2000 04:21:12 EST
> From: ptengin@...
>Subject: Re: re - Wonderboard PC interface
>
>In a message dated 02/28/2000 11:50:07 AM Hawaiian Standard Time,
>dfs@... writes:
>
><< DB25 and screw term capable input >>
>
>I believe Doug was speaking of the euro screw terminals.
>
>Peter
>THRD, Inc.
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>not
>Message: 14
> Date: Tue, 29 Feb 2000 04:26:17 EST
> From: ptengin@...
>Subject: Re: For sale: two used Superior Electric 840 oz-in steppers
>
>In a message dated 02/28/2000 5:30:12 PM Hawaiian Standard Time,
>multi-volti@... writes:
>
><< I found a seller who will only sell three motors.
>
> I only want one (sound familiar?), but he won't sell me just one <snip>
>
> Anyone need two hefty motors so I can buy the third?
>
> Murray >>
>
>Murray,
> If you ever go "Belly up" with that one motor, you will be out of luck
>finding one at your local Rat Shack. You might get rid of one but I would
>get rid of two.....____
>
>IMHO
>
>Peter
>THRD, Inc.
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>____
>Message: 15
> Date: Tue, 29 Feb 2000 10:57:17 -0000
> From: "Peter Smith" <peter@...>
>Subject: Re: is my software stable?
>
>
>----- Original Message -----
>From: Joe Vicars <jvicars@...>
>To: <CAD_CAM_EDM_DRO@onelist.com>
>Sent: 25 February 2000 20:31
>Subject: [CAD_CAM_EDM_DRO] is my software stable?
>
>Hello Joe
>I to have just started using DeskNC and G codes, and noticed an odd effect
>with the programing, in the two examples below, the first one does not run
>correctly, i.e. when the motors are decelerating almost to a stop, there
>seems to be a kick just as the motor stops ( all axis, lost steps), this
>does not happen in the second one where G90 X0.0 Y0.0 Z0.0 are on the same
>line, I have also noticed that comments in the file sometimes cause a
>similar problem.
>Has anyone had this problem before ?
>
>G90
>G00 X 0.0 Y0.0 Z0.0
>G00 X1.8 Y1.8 Z-1.8
>G00 X0.0 Y0.0 Z0.0
>M02
>
>G90 X0.0 Y0.0 Z0.0
>G00 X1.8 Y1.8 Z-1.8
>G00 X0.0 Y0.0 Z0.0
>M02
>
>Best Wishes
>Peter Smith
>
>
>> From: Joe Vicars <jvicars@...>
>>
>> I am running desknc from a 486 DOS only machine. So far everything
>> works great, but the longest program I have run is less than 30 seconds
>> total. Eventually I want to run more complicated paths, and much longer
>> execute times. Am I going to run into stability problems from the
>> software?
>>
>>
>> ------------------------------------------------------------------------
>> Get one email address for all your friends!
>> Start a free email group on eGroups!
>> http://click.egroups.com/1/1881/2/_/423600/_/951510733/
>> ------------------------------------------------------------------------
>>
>> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
>discussion of shop built systems in the above catagories.
>> To Unsubscribe, read archives, change to or from digest.
>> Go to: http://www.onelist.com/isregistered.cgi
>> Log on, and you will go to Member Center, and you can make changes there.
>> For the FAQ, go to http://www.ktmarketing.com/faq.html
>> bill,
>> List Manager
>>
>>
>
>
>
>___________________________________________________________________________
>_______________________________________________________________________________
>
>
>