Re: [CAD_CAM_EDM_DRO] Re: Updated website

On Fri, 19 Apr 2002 20:48:41 -0000, you wrote:

>Have you read the ST "Applications of Monilithic Bridge
>Drivers" application note? I've stashed a copy over
>on my web site at:
>
> http://web.gramlich.net/projects/datasheets/st/l293an.pdf
>
>A Google search for "L293AN.pdf" will probably yield additional
>hits.
>
>In the application note they talk about how to parallel the
>outputs a L298 (page2) and how to connect an L297 to an
>L298 (page 10).

Yea - the L297 to 298 works OK. I've not built the L6203, the PCB's
done, I've got all the bits, but the H Bridge design caught up with it
:)

It's the L297 to H bridge I'm not sure of - I think I got it right,
the sense pins go to the high side of the current sense resistor, the
inh pins to low side (in this case ground) ??? Just like someone to
confirm before I do another PCB.

>On my 4-axis L298 board:
>
> http://web.gramlich.net/projects/cnc/motion/rev_c/index.html
>
>I've substituted a MicroChp PIC16F628 for the L297. This allows
>me a little more control over what is going on. Also, switching
>pins around is frequently (but not always) just a matter of
>changing a few definitions in the microcontroller source code.
>

I may go the PIC route if I find I'm loosing steps and decide to go
the encoder route. I have a terrible aversion to asm, hex etc after
doing Cobol & ICL SCL for a couple of years in a past lifetime <G>.


Steve Blackmore
--
Pilot Consultancy Limited ***** Computer Consultants
Telephone 01744 752256 Mobile 07831 768478
Email: steve@... WWW: http://www.pilotltd.net