Hi Stephan, On Wednesday 28 September 2005 23:27, Stephan February wrote: > hello > > On Wednesday 28 September 2005 22:23, Gerhard Jaeger wrote: > > hmmm, I thought my last mail was quite clear! > > I don't think it's necessary to snoop the USB traffic - it's necessary to > > find out the correct clock values... > > Armed with Gerard's suggestion, I have been playing around with the timings > and motor speed settings for my Canon LiDE 25.
thanks for that. > Here is a motor/timing setting which currently works well for me, and without > the previous annoying grinding noises. It also looks like my problems with > saned are related to previously reporting "timing" issues when network > scanning. The latter I've confirmed by doing a saned scan via localhost. > > Please comment if you see anything obviously wrong or dangerous here 'cause I > really just fiddled until I was satisfied. if it's working, everything is fine ;) > > >>>>>>>> snip <<<<<<<<< > > { MODEL_CANON1200, 8, 51, 9, > /* Motor settings (PWM and PWM_Duty) */ > /* <=75dpi <=100dpi <=150dpi <=200dpi <=300dpi */ > {{ 8, 31, 1 }, { 8, 31, 1 }, { 8, 31, 1 }, { 8, 31, 1 }, { 8, 31, 1 }, > > /* <=400dpi <=600dpi <=800dpi <=1200dpi <=2400dpi */ > { 8, 31, 1 }, { 8, 31, 1 }, { 8, 31, 1 }, { 8, 31, 1 }, { 8, 31, 1 }}, > /* Color mode MCLK settings */ > { 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 }, > { 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0, 9.0 }, > /* Gray mode MCLK settings */ > { 7.0, 7.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0, 6.0 }, > { 6.5, 6.5, 6.0, 6.0, 6.0, 6.0, 8.0, 12.0, 12.0, 12.0 } > }, just wondering, why the MCLKs are that high - ain't the scans too slow? > >>>>>>>>> snip <<<<<< > > ... and ... > > >>>>>>> snip <<<<<<<< > /** Canon LiDE25 */ > static HWDef Hw0x04A9_0x2220 = > { > 0.80, /* dMaxMotorSpeed (Max_Speed) */ > 0.200, /* dMaxMoveSpeed (Max_Speed) */ > 0.0, /* dHighSpeed */ > >>>>>>>> snip <<<<<<< > > If I were to create a patch, would it be better if an entirely new section > for > the LiDE25 was created e.g.? > > . > . > { MODEL_LIDE25, 8, 51, 9, > /* Motor settings (PWM and PWM_Duty) */ I'll do that and submitt it to CVS today... Thanks again for that work. Gerhard