re:Re: Re: Andy Olney's Comments on PIC-Servo

If there were room on the board for ADC, that would be great. 12 bits,
perhaps 8 or 16 multiplexed input.

This would make the board have a slightly broader application that CNC: A
CNC measuring machine.

Even if the ADC socket was empty for most people, having the capability to
use it would be great.

Elliot Burke

>Message: 7
> Date: Wed, 21 Jul 1999 08:45:34 -0700
> From: "Dan Mauch" <dmauch@...>
>Subject: Re: Re: Andy Olney's Comments on PIC-Servo
>
>Yes
>-----Original Message-----
>From: Mike Gann <mikegann@...>
>To: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
>Date: Wednesday, July 21, 1999 8:11 AM
>Subject: Re: [CAD_CAM_EDM_DRO] Re: Andy Olney's Comments on PIC-Servo


>From: Mike Gann <mikegann@...>
>
>This sounds great. Can this also be used
>to close the loop for stepper system?
>
>I have yet to come up with a machine, let
>alone convert it to CNC. But I am saving up
>for it, and following these discussions.
>
>Please keep this project going.
>
>Mike Gann
>
>Tom Kulaga wrote:
>>
>> From: Tom Kulaga <tkulaga@...>
>>
>> > From: "Dan Mauch" <dmauch@...>
>> >
>> >If someone will give me a schematic I will build it.
>> >Dan
>>
>> I'll put it together as soon as I get a chance. I assume we'll be
>> needing 4 DAC channels to handle the 4 encoder inputs? I guess this
>> is best answered by the EMC guys.
>>
>> OK, so here's what I'm thinking:
>>
>> - 4 channels of encoder input
>> - 4 DAC outputs
>> - Fully buffered, and regulated DC supply for encoders
>> - 8 bit ISA (would 16 bit be better?)
>> - Would a counter-timer chip be useful?
>> - Some digital TTL level I/O would be good, but how many channels?
>>
>> I really want to do this right the first time, so let's get some
>> discussion going. If there's a need, we could even make this a 6
>> axis board. I'd probably want to make that a 2 board solution (to
>> keep us using 2-level PCB's, and keep it HSM repeatable). There's no
>> unreasonable requests that can be made on this, but there is a limit
>> on just how much you can put on a 2-level board, so we need to make
>> sure we have the right gear on there.
>>
>> -Tom Kulaga
>>
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