DWC Z - Axis Movement off by Factor 10

Veti

@Frederik said in DWC Z - Axis Movement off by Factor 10:

Standard M8 Spindles

M8 Spindles have not been used in 3d printers for years because of bad results.

do you mean tr8 lead screw?

Frederik

@Veti It was a complete Kit from Ratrig. There were no specifications other than M8 400mm
I will ask the manufacturer

BoA

@Frederik Make a picture. will be faster.

Frederik

according to the BOM:

8mm Metric ACME Lead Screw

BoA

@Frederik If this is Tr8x8 with 1.9deg stepper and 16microsteps it should be 400steps/mm

Also seems movement parameters section is doubled for some reason.

Frederik

Veti

thats a 4 start tr8 leadscrew

it has an 8mm pitch

BoA

@Veti So as I wrote, 1.9deg, 16 microsteps, 8mm pitch - 400steps/mm. Not ~4000 or 2560.

And... what kind of extruder You have that E steps/mm are so.. not a round number?

Frederik

thanks a lot, i will try the new values

BoA

@Frederik And cleanup You config. Seems

M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X160.00 Y160.00 Z2560.00 E837.02 ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X12000.00 Y12000.00 Z1800.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z30.00 E250.00 ; set accelerations (mm/s^2)
M906 X1800 Y1800 Z1000 E1200 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X400 Y400 Z400 S0 ; set axis maxima

; Endstops
M574 X2 S1 P"!io1.in" ; configure active-high endstop for high end on X via pin !io1.in
M574 Y1 S1 P"!io0.in" ; configure active-high endstop for low end on Y via pin !io0.in
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

is duplicated

Frederik

MY other question is about the LAser FIlament Sensor:

I only Found the following Line in the dozuki for RRF 3.x

M591 D0 P5 C"e0_stop" R40:120 E3.0 S0 ; Duet3D laser sensor for extruder drive 0, connected to endstop input 3 (E0), tolerance 40 to 120%, 3mm comparison length, disabled

would this work on my duet 3 (connected to io3)

M950 J3 C"!^io3.in" ; Input 3, inverted, pullup enabled
M591 D0 P5 C"io3.in" R40:120 E3.0 S1 ; Duet3D laser sensor for extruder drive 0, connected to IO 3,
tolerance 40 to 120%, 3mm comparison length, enabled

Frederik

@BoA oh, i see, thats a copy and paste error.... in my config its only once

BoA

@Frederik said in DWC Z - Axis Movement off by Factor 10:

M950 J3 C"!^io3.in" ; Input 3, inverted, pullup enabled

I would remove this one.

Frederik

@BoA so only this line :

M591 D0 P5 P"io3.in" R40:120 E3.0 S1

the green light flashes constantly and when i move the filament i respnds with faster blinking.

is this all i need ? no extra pause and resume command ?

BoA

@Frederik Should be fine. But I am guessing when filament monitoring shows some problems pause.g is executed to pause the print.

You can check sensor status by M591 D0

Frederik

@BoA my extruder Setup:

Original Bondtech BMG with a E3d Volcano with 0.4 mm micro swiss nozzle and titan heatbreak. 40W Heater and Thermistor 100K
0.9° Pancake Stepper

bedheater: 220V AC1.2 kW Keenovo Silicone Pad 400x400

Frederik

@BoA said in DWC Z - Axis Movement off by Factor 10:

M591 D0

Response: Extruder 0 has no Filament Sensor

BoA

@Frederik BMG with 0.9 stepper + 16 microsteps should have 830steps/mm

Frederik

i will try it. on moment

BoA

@Frederik Paste Your config.g only and result of

M98 P"config.g"