Re: HP plotter servo

Mariss,

Not trying to say there is anything wrong with the cost of a Gecko
drive, I like em!!

But as you say a cheap drive is one that costs less than the motor.
For a machine running on motors from dead printers and for fun more
than production an ultracheap drive built on veroboard would be
neat. The PIC application note contains the circuitry to do drive a
motor and although I am sure it is not as good as a gecko especially
in terms of bullet proofness etc if you build it yourself you can
fix it yourself if you see what I mean.

> and effort is a killer. I started a design of a brand new drive
>last December 15. I have spent some part of nearly every working
>since then. I have an engineering project book nearly as thick as a
> Mitchner novel. The drive is just coming to life and if I'm lucky >
>(no setbacks), it may be marketable by the very end of this year.
>The engineering diaries on the G201/210s and the G320/340s are far
>fatter.

You are producing a product, if you get it wrong the **** hits the
fan, a homebuilt item that needs mods is just that.

Not that I am saying it would be easy, if it were I would have done
it not just talked about it :)

Graham