plustek@linuxhacker.org

Hi Scott,

On Dienstag, 25. März 2003 13:02, Scott Burns wrote:
> Hi,
>     I bought this scanner a while back thinking that Compaq would be
> sure to have a driver.  Silly me, I should have checked...
>
>     The scanner uses the 9832 chip with a Mitsumi SP35SP-7T motor,
> similar I beleive to the stepper motor in the UMAX 2200.

is the UMAX 2200 also a LM983x based device?

>     I've added enough defs to plustek-devs.c to get it recognized and to
> have simple controls but the motor is giving me problems.  I have no
> problem scanning or moving the sensor forwards, but it only goes
> backwards when it wants to.  There seems to be no rhyme or reason, it
> just (usually) sits there and buzzes.  I ran up Windows and it still
> works fine under 98, so I don't think I've damaged the motor.
>
>     plustek-devs.c says, close to the end, to up the MCLK variable in
> this case.  I've run it at just about every variable between 1 and 24,
> and no other MCLK goes that high.  Is there anything else that springs
> to mind that I can try?
>

What version of the backends are you trying?
The fast moves of the motor are also influenced by the setting of
dMaxMoveSpeed defined in the HWDefs structure, so I suggest at least
use the settings of the UMAX3400 for your experiments - BUT use
the current sources for this (SANE-1.0.11)...

Cheers
  Gerhard

BTW: What are the vendor and product IDs?