Re: [Spam] RE: [CAD_CAM_EDM_DRO] Quadrature encoders

Hi Andrey

My favorite is the HP QEDS 7000 encoder, but the Bourns encoder is ok. Use
either two inputs on a parallel port, or the joystick interface. A 1K pullup
resistor may be needed. The two other sw inputs on the joystick interface may
be used for two push buttons.

There was a discussion on the turbocnc list a month back "encoder jogging", you
might want to read through.

Look at the pix of this group under "Driver Power supplies" for pix of the
pendant I built.

My code requires a full cycle, so I get the same number of steps as the encode
has cycles. Other code may switch on each edge of the quadrature signals.

SP-16 shaft encoder from US digital.
http://www.usdigital.com/products/sp16/body_index.shtml?noframes

Alan KM6VV


Andrey Lipavsky wrote:

> So do I want the unit with 6 cycles and 0 detents per rev or 6 cycles and 24
> detents?
>
> Also, any recommendations/circuits for wiring up these things?
>
> Andrey
>
> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of CalBoy101
> Sent: Thursday, June 16, 2005 1:43 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [Spam] RE: [CAD_CAM_EDM_DRO] Quadrature encoders
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Alan Marconett"
> <KM6VV@a...> wrote:
>
>>Hi Andrey,
>>
>>I like the HP shaft encoders $$$. US Digital has encoders as
>
> well. You
>
>>might look at Bourns, DigiKey has them, ECW1J-B24-BC0024. I have
>
> a pair,
>
>>haven't implemented them yet. A little more detent then I'd like,
>
> but you
>
>>might like it. About $3 ea.
>>
>>Alan K