DuetWiFiFirmware minor release 1.15c

dc42

No Actually, it just helped. Things started working right when i put the M667 S0 and the M500. I can set the M572 D0 S0.00 to something other then zero. Whats a Recommended value to start with?

Try S values between 0.05 and 0.25. If you are using more than about 2mm of retraction then be prepared to reduce it when you use high S values. For example, using S0.25 will add about 1mm of retraction at the end of a fast printing move.

guywinslow

Ok, i set the pressure advance to this, and started a test print
M572 D0 S0.05 ; Set extruder 0 pressure advance
M572 D1 S0.05 ; Set extruder 1 pressure advance

When i got to the 1.00mm Z height, the Y axes started to jump, as if it was moving, braking, moving, braking. i killed the print as it was getting pretty load and i was afraid it was going to brake the printer.

guywinslow

Ok, Installed the 1.16 Alfa. The Ste-per motor noise is Still there. I did notes its only on coordinated moves. I can calibrate, move the table around and extrude and all is well. But i run a Print and the noise is there. Note - don't get me wrong this is not machanical, its motor drive control

guywinslow

OK, This probably needs to be under the next release of the Firmware (dc42/Version 1.16 beta 2), but i could not find a Blog or forum for it. So hear is the info:

Ste-per motor noise is down to a Dull rorre (Sounds like a Skipping Hart beet). Its still coming out of extrude motor when i listen to it through a Sc-row driver handle.
Temperature control, the best i can do with Auto-tune is the hot end doing +- 0.3. it is holding that. at lest for the short print times i have been testing.

Going to let this test print finish to see if it finushes.

Bobblejot

you have

M350 X16 Y16 Z16 E16:16 I01 ; Set microstepping mode

Should it not be

M350 X16 Y16 Z16 E16:16 I1 ; Set microstepping mode

or

M350 X16 Y16 Z16 E16:16 I0 ; Set microstepping mode

Depending on whether or not you are using interpolation or not?

Also your X and Y axis steps per millimetre are the same but your motor currents are different? are you using different motors?

guywinslow

Same motors, one is the Y axes, heavy mechanism, it gets slope if there the same. will fix the M350 command. I uploaded the Firmware (dc42/Version 1.16 beta 3). noisy in the steeper motors is gone.

guywinslow

Was ruining another test print. 4mm x 4mm 75mm square. The over extruding started at about 3mm. Looks like its over extruding, then under extruding. Then go's back to normal for 60mm, then it dos it age-an.

dc42

@guywinslow:

Was ruining another test print. 4mm x 4mm 75mm square. The over extruding started at about 3mm. Looks like its over extruding, then under extruding. Then go's back to normal for 60mm, then it dos it age-an.

That sounds to me like either a problem with your extuder drive, or inconsistent filament diameter.

guywinslow

The filament would have to have a difference of .75mm to do this.

I went from:
M350 X16 Y16 Z16 E16:16 I1 ; Set microstepping mode, interpolation mode On
to
M350 X16 Y16 Z16 E16:16 I0 ; Set microstepping mode, interpolation mode Off

Second test print cam out OK. looks like its interpolation. Docs on Stepper state it needs a Good Clock pulse. Probably is noise or not up to snuf, it also explanes why its a repeting intervall. Adding to mush plastick then not enuff. All leave interpolation mode switched off

guywinslow

Figured it out, Extruder issues:

M350 X0 Y0 Z0 E0:0 I0 ; Set microstepping mode

looks like my Stepper motors wont do microstepping mode. If i understand the command right. Symptoms noise steppers, Pore Speed control (Extruder). Switching to latest FW