开云体育

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

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)

Art,
I need some help here, I put together a circuit using a 74hct14
like you did but I can't seem to get it to work with a computer. When
I run Steve Linsay's dro40 program it doesn't react to the movement
of the encoders. I've tried it on three different computers, setting
the parallel ports to both ECP and EPP, there's just no movement of
the readout for any axis. I've tried it in a DOS window under 98 and
booting directly to DOS.
The part that's driving me crazy is that when I hook up the
encoders to a Pwr Sup and a scope I get good square waves out of the
chip on all 6 lines to the parallel port connector. I've checked the
wiring about a gazillion times but can't find any mistakes.
Using the parallel.exe program Steve included with his SW, the
ports look good, but when I use his Portstuf.exe hooking an external
voltage to the port pin 2 and grd pin 22 doesn't have any effect. I
can change the port setting using the keyboard in the program but
that's it.
I don't have any other ways to check the ports that I know of, but
when I hook a Snappy video capture device to the ports they work fine.

Any ideas?
Thanks
Terry

--- In CAD_CAM_EDM_DRO@..., "A. G. Eckstein" <axtein@s...>
wrote:

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)

Terry,
You may have the same problem that I have and that is the "switch" that
needs to be set on the parallel port. Have you tried using the DRO40A.exe
program instead of the DRO40.exe??

This is documented in his text files and you may have to do that. That is
the only way I can get mine to run also.

Hope this helps, but let me know if it doesn't.

Art


At 05:07 PM 03/04/2000 -0000, you wrote:

From: "Terry May" <tmay@...>

Art,
I need some help here, I put together a circuit using a 74hct14
like you did but I can't seem to get it to work with a computer. When
I run Steve Linsay's dro40 program it doesn't react to the movement
of the encoders. I've tried it on three different computers, setting
the parallel ports to both ECP and EPP, there's just no movement of
the readout for any axis. I've tried it in a DOS window under 98 and
booting directly to DOS.
The part that's driving me crazy is that when I hook up the
encoders to a Pwr Sup and a scope I get good square waves out of the
chip on all 6 lines to the parallel port connector. I've checked the
wiring about a gazillion times but can't find any mistakes.
Using the parallel.exe program Steve included with his SW, the
ports look good, but when I use his Portstuf.exe hooking an external
voltage to the port pin 2 and grd pin 22 doesn't have any effect. I
can change the port setting using the keyboard in the program but
that's it.
I don't have any other ways to check the ports that I know of, but
when I hook a Snappy video capture device to the ports they work fine.

Any ideas?
Thanks
Terry

OLDER THAN DIRT

Country Bubba

(Actually the inventor of Country and Bubba)

Art,
You hit it right on the head! When I ran dro40a instead of dro40 it
works like a champ :>) I guess it's another case of when in doubt
read the instructions.
Thanks again for your help, now I'm going off line to cut some metal
and mount these puppies on my mill!
Terry

--- In CAD_CAM_EDM_DRO@..., "A. G. Eckstein" <axtein@s...>
wrote:

Terry,
You may have the same problem that I have and that is the "switch"

that

needs to be set on the parallel port. Have you tried using the

DRO40A.exe

program instead of the DRO40.exe??

This is documented in his text files and you may have to do that.

That is

the only way I can get mine to run also.

Hope this helps, but let me know if it doesn't.

Art


At 05:07 PM 03/04/2000 -0000, you wrote:

From: "Terry May" <tmay@...>

Art,
I need some help here, I put together a circuit using a 74hct14
like you did but I can't seem to get it to work with a computer.

When

I run Steve Linsay's dro40 program it doesn't react to the movement
of the encoders. I've tried it on three different computers,

setting

the parallel ports to both ECP and EPP, there's just no movement of
the readout for any axis. I've tried it in a DOS window under 98

and

booting directly to DOS.
The part that's driving me crazy is that when I hook up the
encoders to a Pwr Sup and a scope I get good square waves out of

the

chip on all 6 lines to the parallel port connector. I've checked

the

wiring about a gazillion times but can't find any mistakes.
Using the parallel.exe program Steve included with his SW, the
ports look good, but when I use his Portstuf.exe hooking an

external

voltage to the port pin 2 and grd pin 22 doesn't have any effect. I
can change the port setting using the keyboard in the program but
that's it.
I don't have any other ways to check the ports that I know of,

but

when I hook a Snappy video capture device to the ports they work

fine.

Any ideas?
Thanks
Terry

OLDER THAN DIRT

Country Bubba

(Actually the inventor of Country and Bubba)

Where would I find the dro40 and dro40a programs? I'd like to give them a
try as well.

Ward M.

That is why I gave up on steve's software and wenbt with Tom Kulaga's
design.
Dan

Ward,

Check out Steve Lindsay's site at :

to pick up DRO40; you might also check the 1999 retired files in the
dropbox as I believe they are there also.

Art


At 02:01 PM 03/04/2000 -0800, you wrote:

From: "Ward M." <ward@...>

Where would I find the dro40 and dro40a programs? I'd like to give them a
try as well.

Ward M.


----- Original Message -----

OLDER THAN DIRT

Country Bubba

(Actually the inventor of Country and Bubba)

Art,
Here I am again asking questions... How did you get the encoder
wheel off of the motor shaft? I got the retaining ring off without
destroying the disc but can't seem to get the disc off the shaft. It
appears to be bonded to the aluminum disk underneath it and that acts
like it is a press fit on the shaft. I hesitate to apply too much
force trying to pry it off but am looking for clues.
On the other hand I have a bunch of small plastic pulleys with ball
bearing centers that came out of the plotter that yielded the cable I
plan to use. Since they have an ID enough larger than 5mm that I
think I can bush them to fit the encoder shafts, I plan to use those
to run the cable over, seems like they would be less likely to have
any slippage since HP designed them to be used with the cable. Does
this sound reasonable to anyone, just looking for ideas.
Thanks
Terry


--- In CAD_CAM_EDM_DRO@..., "A. G. Eckstein" <axtein@s...>
wrote:

Ward,

Check out Steve Lindsay's site at : .

nyx.net/~slindsay/dro.html

to pick up DRO40; you might also check the 1999 retired files in the
dropbox as I believe they are there also.

Art


At 02:01 PM 03/04/2000 -0800, you wrote:

From: "Ward M." <ward@...>

Where would I find the dro40 and dro40a programs? I'd like to

give them a

try as well.

Ward M.


----- Original Message -----

OLDER THAN DIRT

Country Bubba

(Actually the inventor of Country and Bubba)

At 06:40 PM 03/05/2000 -0000, you wrote:

From: "Terry May" <tmay@...>

Art,
Here I am again asking questions... How did you get the encoder
wheel off of the motor shaft?

Terry, I just used to big screwdrivers and pryed the encoders off the
shaftby pressing under the aluminum boss and used the screw heads for the
plate as a fulcrum. They are a press fit.

Now that I am trying to do some other work, am building a small press out
of some flat stock and some screws so I won't have to worry about the
screwdrivers slipping (and that has happened)



I got the retaining ring off without

destroying the disc but can't seem to get the disc off the shaft. It
appears to be bonded to the aluminum disk underneath it and that acts
like it is a press fit on the shaft. I hesitate to apply too much
force trying to pry it off but am looking for clues.
On the other hand I have a bunch of small plastic pulleys with ball
bearing centers that came out of the plotter that yielded the cable I
plan to use. Since they have an ID enough larger than 5mm that I
think I can bush them to fit the encoder shafts, I plan to use those
to run the cable over, seems like they would be less likely to have
any slippage since HP designed them to be used with the cable. Does
this sound reasonable to anyone, just looking for ideas.

Sounds good to me, good luck.

Art


A. G. Eckstein

axtein@...

Art,
Thanks for the update, as I said in my reply to Joe I plan to try
the wedge method, I've been known to break a lot of stuff with
screwdrivers :>)
Terry

--- In CAD_CAM_EDM_DRO@..., "A. G. Eckstein" <axtein@s...>
wrote:

At 06:40 PM 03/05/2000 -0000, you wrote:

From: "Terry May" <tmay@...>

Art,
Here I am again asking questions... How did you get the encoder
wheel off of the motor shaft?

Terry, I just used to big screwdrivers and pryed the encoders off

the

shaftby pressing under the aluminum boss and used the screw heads

for the

plate as a fulcrum. They are a press fit.

Now that I am trying to do some other work, am building a small

press out

of some flat stock and some screws so I won't have to worry about

the

screwdrivers slipping (and that has happened)



I got the retaining ring off without

destroying the disc but can't seem to get the disc off the shaft.

It

appears to be bonded to the aluminum disk underneath it and that

acts

like it is a press fit on the shaft. I hesitate to apply too much
force trying to pry it off but am looking for clues.
On the other hand I have a bunch of small plastic pulleys with

ball

bearing centers that came out of the plotter that yielded the

cable I

plan to use. Since they have an ID enough larger than 5mm that I
think I can bush them to fit the encoder shafts, I plan to use

those

to run the cable over, seems like they would be less likely to have
any slippage since HP designed them to be used with the cable. Does
this sound reasonable to anyone, just looking for ideas.

Sounds good to me, good luck.

Art


A. G. Eckstein

axtein@...

Dan,
I may well do that also in the future, I justed wanted to try
everything out with the lowest cost to start with. I like the idea of
getting away from the parallel port if possible.
Terry

--- In CAD_CAM_EDM_DRO@..., "Dan Mauch" <dmauch@s...> wrote:

That is why I gave up on steve's software and wenbt with Tom

Kulaga's

design.
Dan
-----Original Message-----
From: Terry May <tmay@...>
To: CAD_CAM_EDM_DRO@... <CAD_CAM_EDM_DRO@...>
Date: Saturday, March 04, 2000 9:06 AM
Subject: [CAD_CAM_EDM_DRO] Re: RE: DRO UPDATE

From: "Terry May" <tmay@...>

Art,
I need some help here, I put together a circuit using a 74hct14
like you did but I can't seem to get it to work with a computer.

When

I run Steve Linsay's dro40 program it doesn't react to the movement
of the encoders. I've tried it on three different computers,

setting

the parallel ports to both ECP and EPP, there's just no movement of
the readout for any axis. I've tried it in a DOS window under 98

and

booting directly to DOS.
The part that's driving me crazy is that when I hook up the
encoders to a Pwr Sup and a scope I get good square waves out of

the

chip on all 6 lines to the parallel port connector. I've checked

the

wiring about a gazillion times but can't find any mistakes.
Using the parallel.exe program Steve included with his SW, the
ports look good, but when I use his Portstuf.exe hooking an

external

voltage to the port pin 2 and grd pin 22 doesn't have any effect. I
can change the port setting using the keyboard in the program but
that's it.
I don't have any other ways to check the ports that I know of,

but

when I hook a Snappy video capture device to the ports they work

fine.

Any ideas?
Thanks
Terry

--- In CAD_CAM_EDM_DRO@..., "A. G. Eckstein" <axtein@s...>
wrote:

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)

-----------------------------------------------

-------------------------

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!

-----------------------------------------------

-------------------------

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:
Log on, and you will go to Member Center, and you can make changes

there.

For the FAQ, go to
bill,
List Manager

In a message dated 3/10/00 7:56:59 PM Mountain Standard Time,
axtein@... writes:

<< For the record, looks like she may make it, >>
I sincerely hope so, and you are both in my thoughts
bill

Hi All,

Sorry for not replying to any mails for the past week, but my wife went
into intensive care last Saturday and it has been touch and go all week long.

For the record, looks like she may make it, but I will not be in regular
touch for a while. I hope you all understand.


Art


A. G. Eckstein

axtein@...

Art,
Just wanted to say we'll be thinking about you and your wife, hoping
everything works out for you. I look forward to hearing you discuss
metal working soon, but certainly other things in life are much more
important.
Terry

--- In CAD_CAM_EDM_DRO@..., "A. G. Eckstein" <axtein@s...>
wrote:

Hi All,

Sorry for not replying to any mails for the past week, but my wife

went

into intensive care last Saturday and it has been touch and go all

week long.

For the record, looks like she may make it, but I will not be in

regular

touch for a while. I hope you all understand.


Art


A. G. Eckstein

axtein@...

Hi Art,

I am a newcomer to the list and I don't know you. However, I feel for you with your wife being in the hospital. I hope she gets better very soon.

I don't know what I would do if something happened to my wife.

Ros