of the SN754410 chip is the one on the outside or the inside?
--- In oopic@yahoogroups.com, "dan michaels" <oric_dan@...> wrote:
>
> --- In oopic@yahoogroups.com, "minghui1984" <minghui1984@> wrote:
> >
> > Hi... its me again. Sorry got some problems with connecting my
> stepper motor to make it work. i am using the OOBot from Oricom
Tech
> and due to my stepper motor being of higher current then the L293
can
> support. I resorted to fixing two L298 with the I/O ports available
> on the bot. How do i connect the stepper motors to the pin. The I/O
> ports are those 3 pin servo head kinds. Anyone have any idea where
> should i put the input of my driver to?
> >
>
>
> If you check the oopic manual, you will notice that the stepper
motor
> objects work with specific cpu pins, so you need to connect those
> pins to your external driver board. In general, you will pick up
only
> the inner pins, which carry the signals, on the OOBOT40 3-row
> headers. You will also need a ground.
>
> Also, as the SN754410 chips on the OOBOT40 board are already wired
> properly to drive stepper motors, you might use the "output" pins
of
> those chips to connect to your external driver board. Eg, wire
output
> 1 of the SN754410 chip to input 1 of the external L298, etc. Also,
> you will need to wire the enable pins of the L298 high.
>
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