Re: [CAD_CAM_EDM_DRO] L297/L298 Chopper Drive Printed Circuit Board

Yes I am familiar with that board. Bill Bailey a fellow Seattle Robotic
member designed it for a robot that he built. It works fine. You may want to
look at my three axis board at www.seanet.com/~dmauch My board has
autocurrent reduction and was designed for low cost cnc machines. As I
recall Bill's does not have auto current reduction unless you use software
control but check with Kevin.
Dan
-----Original Message-----
From: Alan Marconett KM6VV <KM6VV@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Tuesday, June 27, 2000 1:20 PM
Subject: [CAD_CAM_EDM_DRO] L297/L298 Chopper Drive Printed Circuit Board

>Hi to the list,
>
>Has anyone used this board?
>
>The SGS-Thomson L297/L298 based chopper drive PCB provides the means to
>drive a two phase stepper motor in bipolar mode providing up to 2 amps
>of drive per phase with a supply voltage up to 40 volts. This is
>provided on a board that measures 2" by 2 3/4".
>
>Board available at:
>http://www.nwlink.com/~kevinro/pcbchopper.htm
>
>Review at:
>http://www.seattlerobotics.org/encoder/jun97/classics.html
>
>Image of board:
>http://www.seattlerobotics.org/encoder/jun97/classic1.jpg
>
>
>I'm not connected in any way, but at about $39 an axis, might be worth
>considering.
>
>Alan
>
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