> > Maybe Gerhard knows something about this. In the end, it may just
> > vibrations due to different motor settings between SANE and the Windows
> > driver.
>
> your guess is right. While playing with different settings, the grinding
> noise was my partner - and as you now observe sometimes this ghost comes
> back :(
> To solve this problem you might try to play with the settings in
> plustek-usbdevs.c line 2044/2045. Try to reduce the dMaxMotorSpeed and
> dMaxMoveSpeed until the noise dissapears. It's been a long time since I
> tweaked these settings, so I can't tell you wich one to tweak. But always
> change only one setting at a time.
Cool, I'll look at it... However, before I start playing, could you tell me
what kind of increment I may try ? According to this :
0.86, /* dMaxMotorSpeed */
0.243, /* dMaxMoveSpeed */
I think a safe guess is to have increments of 0.02 for the max motor speed
and 0.05 for the move speed, but that's complete guess. Do you remember the
kind of increments I may use ? By any chance do you also remember the units of
those values, what they represent physically ? I ask because I don't know if
there's a risk of breaking the hardware with bad values... (I once broke a CRT
monitor by programming a bad refresh speed :-()
Anyway, thanks for answering so fast. I'm on holidays right now so I may have
some spare energy/time to dig into this.
stF
--
Timeo Danaos et dona ferentes
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