Re: Strange Servodrive

--- In CAD_CAM_EDM_DRO@egroups.com, Jeff Barlow <jeff@b...> wrote:

> Mariss,
>
> Now, _that_ is clever! I like it.
>
> If this is to evolve into a real product that sawtooth wave command
> input, while cute, is not too practical. It would need some other

more

> "computer friendly" way to get a hi res position command. OTOH, the

fact

> that it could output "normal" quadrature encoder signals back to the
> controller is very practical.
>
> All this needs is another little black box to interface a handful of
> these to a PC parallel port and the world would be a better place.

Or,

> at least you could sell a few.
>
> Jeff

Hi,

Thanks for the kind words. The input was convenient, but I agree,
very impractical. It was done to just check out the idea. Rather I am
leaning to having a "change the resolution on the fly" kind of thing.

The step/dir inputs would run a more modest counter and D/A, say 4
bits. That would "microstep" the servomotor at no to low speed but be
bypassed at high speed where all this is unneeded. Maybe a new
breadboard in a week or so.

Mariss