Re: [CAD_CAM_EDM_DRO] SI-7300A or SLA7024M CIRCUITS

Hi Tad,

The chips are ALREADY in driver circuits! And a power supply along with
them! Why not just interface at the 4-phase lines coming from the
processor, and driver 'em that way?

Alan KM6VV

tad borowiecki wrote:

>
> HI,
> I have obtained some stepper control chips off HP
> laserjet 2 and a Fujistu printers. Both chips look
> quite capable of handling a reasonable amount of
> current.
>
> Has anyone had a go at using either of these to create
> a stepper motor driver circuit. It seems a shame not
> to make use of these bits as the motors they control
> are worth trying in a mill.
>
> Thanks.
>
> Tad.
>