Quadrature Optical Encoders

[Rob]

Is anyone aware of an optical encoder other than the HP/Agilent HEDS series?
I want the encoder and disk as separate units rather than as a complete
assembly. I'm looking at around 1000 / rev resolution. Searching the likely
culprits has not turned up anything.

TIA
rob

 

[Vermin]

On Fri, 14 Nov 2003 13:45:16 +0800, "Rob" <rds2665@yahoo.com.au>
wrote:

Is anyone aware of an optical encoder other than the HP/Agilent HEDS series?
I want the encoder and disk as separate units rather than as a complete
assembly. I'm looking at around 1000 / rev resolution. Searching the likely
culprits has not turned up anything.

TIA
rob

This any use?:

http://www.wildcard-innovations.com.au/encoder_describe.html

It's for Australian made digital setting circles (astronomy).

V.

 

[David]

On Fri, 14 Nov 2003 13:45:16 +0800, Rob wrote:

Is anyone aware of an optical encoder other than the HP/Agilent HEDS series?
I want the encoder and disk as separate units rather than as a complete
assembly. I'm looking at around 1000 / rev resolution. Searching the likely
culprits has not turned up anything.

TIA
rob

Check out

http://www.pca-aus.com.au/pages/products.html

David

 

[Rob]

"David" <no_way@hotmail.com> wrote in message
newsan.2003.11.14.12.59.23.828000@hotmail.com...

On Fri, 14 Nov 2003 13:45:16 +0800, Rob wrote:

Is anyone aware of an optical encoder other than the HP/Agilent HEDS
series?
I want the encoder and disk as separate units rather than as a complete
assembly. I'm looking at around 1000 / rev resolution. Searching the
likely
culprits has not turned up anything.

TIA
rob

Check out

http://www.pca-aus.com.au/pages/products.html

David

Hi David - Thanks for the reply. I am really looking for the innards of the
assemblies, just the encoder disks and the opto component rather than a
complete unit.
rob

 

[Rob]

"Vermin" <Vermin@nowhere.com> wrote in message
news:b559rv8ld00ct5n4mb2v8f3134tvcojos6@4ax.com...

On Fri, 14 Nov 2003 13:45:16 +0800, "Rob" <rds2665@yahoo.com.au
wrote:

Is anyone aware of an optical encoder other than the HP/Agilent HEDS
series?
I want the encoder and disk as separate units rather than as a complete
assembly. I'm looking at around 1000 / rev resolution. Searching the
likely
culprits has not turned up anything.

TIA
rob


This any use?:

http://www.wildcard-innovations.com.au/encoder_describe.html

It's for Australian made digital setting circles (astronomy).

V.

Hi Vermin - this is getting closer - I might give them a call and see what
price they are looking at. Appearances may not count but the unit looks a
little cheaper than others I've seen (ranging from $300 rapidly upward). The
compoents for the Agilent / HP units are around $120 for the disk & encoder.

Thanks
rob

 

[Rob]

V.

Hi Vermin - this is getting closer - I might give them a call and see what
price they are looking at. Appearances may not count but the unit looks a
little cheaper than others I've seen (ranging from $300 rapidly upward).
The
compoents for the Agilent / HP units are around $120 for the disk &
encoder.

Thanks
rob

They are $134 Oz - listed on the website - not too bad!
rob

 

[Vermin]

On Sat, 15 Nov 2003 14:11:26 +0800, "Rob" <rds2665@yahoo.com.au>
wrote:

V.

Hi Vermin - this is getting closer - I might give them a call and see what
price they are looking at. Appearances may not count but the unit looks a
little cheaper than others I've seen (ranging from $300 rapidly upward).
The
compoents for the Agilent / HP units are around $120 for the disk &
encoder.

Thanks
rob



They are $134 Oz - listed on the website - not too bad!
rob

Rob,

I just had another look at mine, it would seem to be a simple matter
of prying off the back if you want the components separate.

A look at their web site is worthwhile:

http://www.usdigital.com/products/optical-encoders.shtml

V.

 

[Rob]

"Vermin" <Vermin@nowhere.com> wrote in message
newsgjbrvggtmaffqasnutf9c9vjcv6dag3gb@4ax.com...

On Sat, 15 Nov 2003 14:11:26 +0800, "Rob" <rds2665@yahoo.com.au
wrote:


V.

Hi Vermin - this is getting closer - I might give them a call and see
what
price they are looking at. Appearances may not count but the unit looks
a
little cheaper than others I've seen (ranging from $300 rapidly
upward).
The
compoents for the Agilent / HP units are around $120 for the disk &
encoder.

Thanks
rob



They are $134 Oz - listed on the website - not too bad!
rob


Rob,

I just had another look at mine, it would seem to be a simple matter
of prying off the back if you want the components separate.

A look at their web site is worthwhile:

http://www.usdigital.com/products/optical-encoders.shtml

V.

Thanks Vermin, they've got some nice toys on their site. With our dollar so
high the prices are not too bad.
regards
rob

 

[David]

On Sat, 15 Nov 2003 14:06:12 +0800, Rob wrote:

"David" <no_way@hotmail.com> wrote in message
newsan.2003.11.14.12.59.23.828000@hotmail.com...
On Fri, 14 Nov 2003 13:45:16 +0800, Rob wrote:

Is anyone aware of an optical encoder other than the HP/Agilent HEDS
series?
I want the encoder and disk as separate units rather than as a complete
assembly. I'm looking at around 1000 / rev resolution. Searching the
likely
culprits has not turned up anything.

TIA
rob

Check out

http://www.pca-aus.com.au/pages/products.html

David


Hi David - Thanks for the reply. I am really looking for the innards of the
assemblies, just the encoder disks and the opto component rather than a
complete unit.
rob

Rob,

I remember that they used to have the encoder disks and optics and all
the other parts, and assemble them to suit the requirements of the
customer locally, as there were too many combinations of counts/rev, shaft
size, polarity etc to stock. I guess now with the smarter encoders which
you program the resolution this may have changed. It may be worth giving
them a ring to see if they will sell them as parts.

David

 

[Rob]

"David" <no_way@hotmail.com> wrote in message
newsan.2003.11.15.12.23.34.687000@hotmail.com...

On Sat, 15 Nov 2003 14:06:12 +0800, Rob wrote:


"David" <no_way@hotmail.com> wrote in message
newsan.2003.11.14.12.59.23.828000@hotmail.com...
On Fri, 14 Nov 2003 13:45:16 +0800, Rob wrote:

Is anyone aware of an optical encoder other than the HP/Agilent HEDS
series?
I want the encoder and disk as separate units rather than as a
complete
assembly. I'm looking at around 1000 / rev resolution. Searching the
likely
culprits has not turned up anything.

TIA
rob

Check out

http://www.pca-aus.com.au/pages/products.html

David


Hi David - Thanks for the reply. I am really looking for the innards of
the
assemblies, just the encoder disks and the opto component rather than a
complete unit.
rob

Rob,

I remember that they used to have the encoder disks and optics and all
the other parts, and assemble them to suit the requirements of the
customer locally, as there were too many combinations of counts/rev, shaft
size, polarity etc to stock. I guess now with the smarter encoders which
you program the resolution this may have changed. It may be worth giving
them a ring to see if they will sell them as parts.

David

Good idea, I will. Thanks

 

[The Real Andy]

"Rob" <rds2665@yahoo.com.au> wrote in message
news:newscache$7ouboh$hcb$1@phantom.amnet.net.au...

Is anyone aware of an optical encoder other than the HP/Agilent HEDS
series?
I want the encoder and disk as separate units rather than as a complete
assembly. I'm looking at around 1000 / rev resolution. Searching the
likely
culprits has not turned up anything.

TIA
rob

Try getting the disc's etched at your local PCB house. I used the get
encoder discs done this way. I used brass shim.

 

[Rob]

Try getting the disc's etched at your local PCB house. I used the get
encoder discs done this way. I used brass shim.

That would work well, but I am chasing up to 2000 / rev which might be a bit
fine (??) for chemical milling.
I found a company the other week (called Alpha Better) that prints direct
onto some type of self adhesive film - all multicolour in both film and ink.
Pretty tough - no marking with isopropyl or fingernail scratching.
Supposedly about $100 for couple of feet of 80 column wide film. This method
too would be ok for low res disks, it could be a good source of
professional looking front panel labels though. There is a company over east
that Entech uses to do polyimide solder masks. They are laser etched. Cost
is pretty high, IIRC around $250 each.

regards
rob